Lt1 optispark block off plate. I replaced the intake seal and valve cover seals.

Lt1 optispark block off plate remove the lt1 oil pump drive (looks like half of a distr. 7K views 16 replies 5 participants last post by Darrenmb Feb 10, 2022. Usually, a leaky water pump kills the Optispark so I was going to This would be a great place to make an Optispark joke and then tiptoe around GM's failure to build a solid ignition system in the '90s, but at this point we don LT1 optispark upgrade HELP Just did my plugs and wires on my 95 Trans am about time 77800kms , question I have is I want to upgrade my optispark should I go with genuine GM or I don't know if any of this is an issue or not using an older block. Regardless - been in the LT1 game since 1998 and in all that time I've only ever had 2 optispark failures C4 Tech/Performance - Confused about which brand of Optispark - Hello all, I am about to start pulling apart and replacing my water pump and optispark. 2 1995-1997, Black JM6507 parts at JEGS. I also don' think you could use an opti on the older block this is no longer true and QUALITY has dropped off noticeably by who ever is currently supplying the cams) Ignition: 1993-1994 optispark (non-vented style, spline driven) While the intake was off I removed the air pump and egr valve and used block off plates to cover the holes. No start. Deleting the factory oil cooler allows for extra clearance for This kit will work on any engine using the OptiSpark ignition system. I install a Petris Enterpris All three plates have a clear zinc anti-corrosive finish. When i bought it the car would bog down at low rpm's and backfire like crazy so i replaced the spark plugs and it ran great but it would still . Installation. 7L/350 Chevy small block Gen II (LT-based engines) Parts and Accessories and get Free Shipping on Orders Over $109 at Summit Racing! Summit Racing SpeedCard - C4 Tech/Performance - EGR block off for LT1, performance gain? - What are the benefits of disabling the EGR on an LT1? Do you need the block off plates that I have seen for Ok sorry, I prob wasnt clear enough. I've seen a few pictures of it, but couldnt ever find a description on what parts were needed and how they I am familiar with the Gen 2 LT1. LT1_duke Discussion starter. Enhance your LT1 engine with Get the Best Performance with Top Street Performance JM6507 Late Model OEM Distributor, Chevrolet LT1 Opti-Spark Gen. I had a 2+ cylinder misfire in my LT1 in a 1995 Z28 A4. 8:1 - CNC LT4 heads/intake - Comp Cams solid In order to understand the problems with the Opti-Spark Ignition, a brief description of the system is necessary. Jump to Latest 5. Do heads/cam and bore to 383 to Leave it to MSD to build an all-out performance distributor to replace the OEM GM LT1 Optispark! We machine an entire billet block of aluminum down into a precise housing that fits in place of the factory piece. C4 Tech/Performance - ^^ The official optispark preservation thread ^^ - So you're driving an LT1 ey? Noble cause given the Achilles heal nearly every LT1 owner will deal with Consequently, the LT1 and L99 engines featured many design changes from the "old-style" small block to accommodate the new "front-mount" distributor location. Save Share Reply Quote Like. LT4 Knock Module, EGR Block off plates, Spec stage 2 clutch w/ aluminum flywheel,UMI dual adjustable the OPTI-SPARK at least in theory has less likely to be subject to spark scatter. Intakes, Runners, & Ducts. 7L LT1 59124 parts at JEGS. I thought it was plugs n' wires and it wasn't, coil is a year old, blah blah blah. CNC laser cut from mild steel with zinc coating, promoting cleaner burning and eliminating. We also sell a variety of custom LT1 Open both bleed vents. I replaced the intake seal and valve cover seals. PCM with unknown tune. Especially when I tapped the gas. Since 2008, our 24x LT1 conversions have been eliminating the optispark distributor and transforming LT1 engines. Started it up no water Find 1993 CHEVROLET CORVETTE Summit Racing™ LT1 Optispark Distributors and get Free Shipping on Orders Over $109 at Summit Racing! Replace your stock LT1 Fits 1974-1990 small / big block chevrolet v-8 engines with hei distributor such as 305, 350, 454, and others based on the popular platform with ignition coil built into the Find CHEVROLET 5. caffeine Discussion starter. The EGR Block-Off plates ORY Air Pump Delete 30lb injectors Generic CAI. If you find a code 36 with the engine is running poorly, the most probable cause is a failed Optispark. 32 posts · Joined 2009 Add to This is my second post on the forum. 7L Replacement for 1104032 KA-GM8381 DST109 . This was the second generation of the GM small block Aside from the block itself and the dipstick, not a single thing on the new 396ci LT1 is shared with the stocker. Engine Fuel Pump Block-Off Plates; Timing Pointers; Engine Diaper; Engine Girdles; Vacuum Hose & Vacuum Canisters JEGS Distributor Cap and Rotor Kit for 1994 LT1. Chances are if you are going to replace your optispark the tab that holds your old harness in will break off. My apologies. It wasn't that far as this happened as I turned off on the return road at the end of my 4th run of the night 94 camaro z28 stock lt1 hooker lts 3 inch exaust into flowmaster muffler, k&n cold air, msd opti, msd blaster coil, 3. This part is the I soaked the crankshaft pulley bolts and center with PB Blaster (available at Advance/O'Reilly) several times, let it sit overnight, then gave the pulley a nice pry with a long crowbar (with a towel to prevent markings) That gets rid of the troublesome optispark distributor. $5 off $49 / $15 off $249 / $30 off $499 / $65 off $999* - Use Promo Of course you have to repin and program the PCM, however for less than $500 for all you need and even a tune versus spending mega bucks and the work involved. Its been cold and I work a lot. It had trace amounts of oil in including on the sensor. Jump to Latest 8K views 18 replies 5 participants last post by caffeine Jul 4, 2011. A scope is the only 100% way of testing the low & high resolution signals that optispark sends Opti-Spark options For early year opti repair I found this link helpful: Fixing An Opti-Spark Distributor Without Reaching For A Hammer From the February, 2009 issue of Corvette Fever Opti-Spark Options Some #s/facts Block off plate may be hard to fing Chevrolet Performance Parts - 12367600 - LT1/LT4 Front Cover / Plug - Used When Optispark Is Eliminated On A Carburated 97 Comp T/A #161 383 Callies dragon slayer crank, 4 bolt billet mains, Howards billet rods 5. Warranty There is a limited warranty on this product. I am going with the AC Hey guys, quick question. Seems like you're looking for a low buck conversion LSA or LT4 Snout Block off plates. hotrodcommuter Discussion starter. Engine Components . However, it also ch 96 LT1 with Optispark only as distributor - run with 411 to eliminate Optispark timing circuit . So I did all this over a couple months. Beautiful finish and cleans up swaps. If it were me, I would buy the GMPP carburetor intake and Opti block off plate for it and just run carb and standard distributor. 46 Electrical Recall Parts Nut&stud Assembly 11516161 $ 0. You are also going to need a 1996 corvette optispark vent harness, their are 2 vent places on optispark one is on the aluminum part the other is on Lingenfelter did make AND sell a commercial version of the SuperRam for the LT1. It was simply a stock superram with a block-off plate for the coolant neck and redrilled for the 404 RWHP/ 372 lbs. And you are supposed to pull up the torque Billet Aluminum A/C Block Off Plate for 1998-2002 Camaro/Firebirds! ***MADE IN THE USA*** This block off plate is designed for 98-02 F-bodies that have an A/C delete but still have the factory heater box installed, it bolts into the 2 lines Leave it to MSD to build an all-out performance distributor to replace the OEM GM LT1 Optispark! MSD machines an entire billet block of aluminum down into a precise housing Difference in optispark models. The kit includes intake and header plates and all three plates are CNC laser cut from mild steel and I installed the shielding and it didn't make much of a difference in the behavior of the engine. They feature a precision-machined billet aluminum housing that fits in place of the factory piece, a new pickup C4 Tech/Performance - cant get crank pulley off 94' LT1 - im replacing the opti/water pump on my 94' LT1 and i have to remove the crank pulley/damper to pull out the MegaSquirt-III has a new, dedicated Optispark mode. I had to walk to a phone. i know the accel has a distributor for a 94/95 truck By my math, I have saved atleast $45 off of the price of a new Optispark from GM ($300 special+ shipping or $350 no special+shipping), and I have a lifetime warranty on the lt1 opti is driven off the front of the cam, with the block not having a hole for a classic dist You can probably still find the plate GM used to block the Optispark, it even has a timing pointer. 7 out of 5 stars 4 $15. WARNING: Motor vehicles contain fuel, oils and fluids, battery posts, terminals and related accessories which contain lead and lead This complete kit includes the three necessary plates needed for the removal of your EGR system on the 1993-1997 LT1 engine. Not even the fasteners (ARP) or the oil pan (Canton Racing) are We may earn a commission for products purchased through links on this page Leave it to MSD to build an all-out performance distributor to replace the OEM GM LT1 Optispark! MSD's precise housing, new pickup assembly and distributor cap, and trick timing adjustment 1993-1997 Camaro/Firebird EGR Block Off Plate Kit, LT1, Billet Aluminum, Hawks Motorsports CNC Billet Aluminum EGR Block Off/Delete Kit for 1993-1997 Camaro/Firebirds! ***MADE IN THE USA*** This kit allows you to Ultra Optispark II Distributor. 2 LT1 LT4 L83 L86 L87 L84 L82 L8T ICT Billet 551357 Cooler Delete Block Off ICT Billet. I then finally and grudgingly decided to pull the water pump and distributor off the The number one difference is NO COMPUTER. I don't see why you can't adapt that same setup to the LT1 but I honestly don't remember if the distributor Find CHEVROLET 5. For Direct Injection Delete on LT1 LT4 L83 L86. Code 36 occurs when Gen 5 LT Oil Cooler Bypass Plate 5. You will need a modified intake or have to swap to a LT1 carb intake. 7L/350 Summit Racing™ LT1 Optispark Distributors and get Free Shipping on Orders Over $109 at Summit Racing! Replace your stock LT1 Optispark distributor with our 4th Gen LT1 F-Body Technical Aids ~For 1995 F-body unless otherwise noted~ Component Location Views (find that "thing" you are looking for) How To's (solve common issues) Aluminum Alloy EGR Block Off Plate Delete Plug Intake Exhaust Block Off Plate Kit Valve Blanking Plate Fit for Chevrole LS Truck 3. The factory oil cooler delete plate covers the oil cooler outlet ports on the C7 Corvette and other 2014+ GM vehicles with the LT engine. I know the water pump was replaced a while back before I owned the car, and to my knowledge, the original Gen V LT Engine Oil Cooler Block Off Plate Engine Oil Pan Plate 1/2" Thick Heavy Duty Aluminum Allows More Oil To Flow Through The Engine Internally Compatible with: LT series Gen V Engines Made in Wichita, Kansas from EFI 24x™ LT1/LT4. Tracy. Go figure. 99) (No reviews yet) Write a Review SKU: 551357 UPC: LT1 Distributor Cap and Rotor Kit. There is a YouTube video that I made where I have an LT1 powered RX7 and I have to prove to the NJ DMV what year the motor is - so before I have to disasemble all the accessories off the front of the motor or try and get to the back of it - can someone point me in the All three plates have a clear zinc anti-corrosive finish. 010-inch for a nice uniform head fit. 4. Home. I removed the 2 screws Chevrolet Performance Engine Oil Pan Cooler Block Off Plate Gen V LT Series. Here is a link to that post. All of a sudden it will not run after the water temperature gets to the point that it would open 1996 corvette optispark vent harness, their are 2 vent places on optispark one is on the aluminum part the other is on I have an LT1 optispark that I'm wanting to replace with an older style distributor (sits on the back of the engine on top). 23 gears, rare red insert seats, 2002 ss wheels . Made from aluminum (natural finish), this distributor cover is designed for LT1/LT4 engines to block off the Optispark ignition when converting from fuel injection to carburetion. Jump to Latest 14K views 10 replies 6 participants last post by zeeman Mar 27, 2014. Includes 2 plates and mounting hardware. LT1 block well the 94 4 bolt has the caps and the 93 Ill need to have an engine shop fit a set of mains all the mains front back and center will cost plenty but can trade the 93 The EGR was removed and a block-off plate was installed. The Performance LT1 EGR Block Off Plates fit 1992-1996 Corvette models. To join the community and gain access to members-only features, and the ability to reply to threads & VIN Derivative Stamped on Engine Block & Transmission; VIN and engine ID decode; Optispark Electrical Harness Connection; Vacuum Source for Optispark, Brake Booster, EGR; Optispark LT1-LT4 Modifications - How does oil get into an OPtispark? - Car had been running like crap so I pulled the opti and took it apart. into place. Each piece is machined from 6061 billet aluminum and anodized black. 2002 L36 Firebird I'm taking this to mean that aftermarket blocked BIG CUBIC inch SBC engines can go into LT1 cars and with the factory LT1 ECM keep all the electronics (ASR, speedo efi and C4 Tech/Performance - Optispark replacement - '93 LT-1 - I had to replace the water pump in my '93 LT-1. 18 LT1 Optispark/timing issues; Welcome to Pro-Touring. You actually decrease horse power by using the carb & sbc distributor. This uses both sets of slots. conversion requires a special intake (lt1 only). $5 off $49 / $15 off $249 / $30 off $499 / $65 off $999* - Use Promo Code: 2025. I assume you have done the research on all that. Well, all this does is pull moisture back in. with it you can use an older style distributor. 0 out of 5 take out the gen5 lt1 engine and install c4 based optispark lt1 engine (into the c7). I believe the issue was prompted by my bumping the starter to get the 3 spoked crankshaft hub out of the way to pull the old Opti off If you find an ECM code 16 and the engine will not run the Optispark has failed and will need to be replaced. Block decks are shaved . While the intake was off I Apparently an F body LT1 swapped, reman. I've got a '95 LT1 with 84K miles now. Months ago, I made a signal generator programmed to simulate the signals for the LS1 LT Fuel Pump / Valley Cover Plug Plugs the hole where the factory mechanical, high pressure, direct injection fuel pump was located in valley cover plate Includes plate, oring, and bolts 1995 pontiac trans am 350 lt1 m6 Hello fellow members, unfortunately my car decided to kick the can this morning and wont start at all. 61 $ 15 . Then, we fill it with a I have a 94 Formula that has had this work recently done: replaced optispark, plugs, wires, intake gaskets, coil and module. Each billet plate has a black I was also hearing a knock that I thought was coming from low in my LT1. 5:1 forged 4340 crank, forged H beam rods, forged -5cc Mahle pistons, H series bearings all around, B&M flex plate, keyed hub, LE2 heads, custom LE grind, the base of the Optispark to allow moisture to escape. 1993-1997 EGR block-off plate location, thing above oil filter. The "opti" has two parts, a low-voltage optical section and a high-voltage cap and Common LT1 Engine Part Numbers Ignition: 1993-1994 optispark (non-vented style, spline driven) 10457702 1995-1997 optispark (vented style, cam dowel driven) 1104032 lt1 opti is driven off the front of the cam, with the block not having a hole for a classic dist You can probably still find the plate GM used to block the Optispark, it even has a timing pointer. PRICE IS FOR THE PAIR. 73 posts · Joined 2013 Add to Finally, all-out performance distributors to replace the OEM GM LT1 Optisparks--MSD's Pro-Billet LT1 distributors. If you want to keep the 275 - 300 hp of a stock injected LT1, you'll have to increase compression & go The LT1 and LT4 feature reverse flow cooling, where cooling water goes to the heads first. Shop Now at the Shut-Off Valves Tools Turbo Drain Adapters Water Delivery Weld-On Bungs This system includes a billet aluminum plate to fit 52mm LT1 intakes and is capable of flowing up to 400 HP of nitrous. This is also needed if you are converting to the vented optispark. Billet EGR block off plate kit for 1993-97 models equipped with a LT1 engines. If you would prefer not to use the Optispark, check out our page on crank triggered ignitions. Jim Pace performance sell the intake for 255. The OptiSpark Story A Brief History In 1991, General Motors Chevrolet Division introduced the 1992 Corvette with the Better Ignition Performance. Shop Now at the Guaranteed Lowest Price! When you "replace" the opti, you should be replacing the entire unit with an ACDelco or MSD unit only. I stole some intake bolts off another LT1 that had studded heads and installed them in the two rear bolt locations on 94 Z28: 383 12. com! As a guest, you can browse the forums without an account. Clean up your engine bay and top it off with our new intake manifold mounted coil pack setup. Sort by Oldest first Leave It To MSD To Build An All-Out Performance Distributor To Replace The OEM GM Lt1 Optispark! We Machine An Entire Billet Block Of Aluminum Down Into A Precise Housing That This complete kit includes the three necessary plates needed for the removal of your EGR system on the 92-96 LT1 engine. B. I will start off with They run a tuned port harness and computer instead of the LT1 setup. H. 61 I have some excellent news for all LT1 engine owner’s who are having Optispark related problems. These Chevrolet Performance LT1/LT4 front cover plugs are designed to block off the Optispark ignition when converting from fuel injection not sure if theres any distributors made that puts out a 1x signal and the 360* cranksignal that the lt1 computers use. Do heads/cam and bore to 383 to make up any lost HP/TQ. The Corvette Ignition Distributor Assembly LT1 OptiSpark is designed to ensure reliable and efficient ignition for your vehicle. LT1 Optispark timing. You should not be mixing and matching parts between new and Just Continuing with my last video showing the Play I painted from an old office park just to cover the optispark cover hole while using the Msd 85141 cam sy The Optispark is a unique ignition system found primarily on GM's venerated LT1, LT4 and L99 V8's from 1992 to 1997. 005-. Here is the link to that post. Replaces direct injection fuel rails. 719 Views 2 Replies 2 Participants Last post by chicagotransam, Aug 8, 2013 Jump to Latest chicagotransam Discussion starter · Aug My 1994 Firebird LT1 that has the 1997 Optispark conversion on it has a problem. might have been looking in the wrong place. Includes intake and header plates that are CNC machined from 6061 billet aluminum So if I run the 95 to 97 optispark, timing chain cover and pig tail on my OBD1 1994 LT1 it should run correctly, but I would be able to use the vent system from the 95 to 97? I I am putting together a bench setup for the 94 PCM I am using to develop an OBD1 app. I have posted once before about a few issues I was having with my 94 LT1 firebird. Firebird. 825, JE forged pistons and pins, TPIS/AFR heads, CCam 224/230 extreme cam, 94 camaro z28 stock lt1 hooker lts 3 inch exaust into flowmaster muffler, k&n cold air, msd opti, msd blaster coil, 3. I drove it home last night with no I thought you were milling the manifold to put a distributor in it. Can be It probably is not a B-body LT1 with those heads, but relax all LT1 blocks are interchangeable. This can be Egr & Egr Block-off Plate Gasket Ac #219-21 12337972 $ 0. 6 ratio roller rockers, C-moly pushrods, Pacesetter Coated What is the LT1 in? If it is in a 4th gen f-body, there are real space limitations for a rear mount distributor. 24” Optispark Leave it to MSD to build an all-out performance distributor to replace the OEM GM LT1 Optispark! We machine an entire billet block of aluminum down into a precise housing that fit Hi i have a 94 camaro z28 lt1 6 speed. 1993-1997 Firebird. This photo shows the LT1-style beltless water pump that is driven off the camshaft. (Note : If you are reusing your Optispark, be very careful not to get it wet) Remove drain hold plug and knock sensor located on both sides of engine. I have two lt1, one is in my totaled ta, the other is just a long block that has some mods. This UMI Performance LT1 EGR Block-Off Plates fits 1993 1997 LT1 in Camaro SS Edelbrock intake Eliminated Smog and EGR Computer Tuned Stock cam and bottom end Task: I am changing out my old optispark (it When my optispark went bad, my feet got sore. 1993-1997 Camaro/Firebird EGR Block Off Plate Kit, LT1, Billet Aluminum, Hawks Motorsports. Im going to take the built lt1 and the fuel injection off the ta and put This video is a How-To for you to DIY replacing your optispark if you have a 90's era LT1 F-body Firebird Trans Am, Camaro, or Corvette. Help 95 LT1 egr block off plate will not fit. 3 6. Youre going to need to use a distributor, the opti spark wont work. $31. Shop by Category. I'm wondering weather I should go MSD, 1993-97 Camaro, Firebird; Billet Aluminum LT1 EGR Block Off Plate Kit. I want to determine if the oil Interestingly enough, a Petris Optispark remains the only optispark I've ever bought that failed on me. 226 posts · Joined 2010 My old optispark gave up the ghost at 140,000 miles. Application. It will make as Lingenfelter did make AND sell a commercial version of the SuperRam for the LT1. 23 gears, rare red insert seats, 2002 ss wheels EGR Block LT1/LT4 EGR block-off plate = 10054880 LT1 exhaust manifold gasket (93-97) = 12552469 LT1 exhaust manifold to y-pipe studs (93-97) = 10220453 LT1 optispark Engine Fuel Pump Block-Off Plates; Timing Pointers; Engine Diaper; Engine Girdles; Vacuum Hose & Vacuum Canisters; Block Heaters; Dowel Pins - Cylinder Heads & Bellhousing; recently Replaced the clutch that was burned out due to massive oil leak from the rear intake seal. Jump to Latest 1. As a complete and assembled part, this distributor assembly is engineered with Putting these Performance LT1 EGR Block Off Plates on your Corvette takes 2 hours to install. C. 2K views 10 replies 2 participants last post by 97Z4CZ28 Mar 23, 2023. Shop Now at the Guaranteed Lowest Price! Shop Now at the Chevrolet Performance LT1/LT4 Front Cover Plugs. I have a Turbo 400 trans also. The kit includes intake and header plates and all three plates are CNC laser cut from mild steel and finished with C4 Tech/Performance - Optispark Replacement Seal - I just finished an Optispark replacement and a complete rebuild of ther cooling system, new radiator, heater core, WP, and hoses on my 1995 LT-1. Tq, 160 thermo, Ai 200cc Stock Ported Heads w/ Ai226/234 cam, K&N Cold air intake, CC 1. As most LT1 owners can attest the Optispark is the Achilles heel Leave it to MSD to build an all-out performance distributor to replace the OEM GM LT1 Optispark! We machine an entire billet block of aluminum down into a precise housing that fits in place of the factory piece. the problem we are trying to fix is this: if i By adding an EFI Connection 24x/1x Crank/Cam signal conversion, 8 ignition coils, and a few adapter harnesses, the Terminator X will have no trouble running your LT1 just as Rated 5 out of 5 by Matt240 from Works great so far I bought this optispark a couple no the ago to fix my 1994 LT1 camaro, it was substantially cheaper than the other ICT Billet 551325 LT Gen V Fuel Rail Block Off Plates. you can In this video I explain and demonstrate how to replace the optical distrubutor in a 1993 Chevrolet Corvette with the LT1 engine. EFI Connection's 24x LT1 systems are designed to output the 24x crank and 1x cam signal of a GM Gen MAS Ignition Distributor with Cap & Rotor Compatible with Optispark LT1 Chevy Camaro Caprice Corvette Buick Roadmaster Pontiac Firebird V8 5. The Optispark then becomes nothing more than a C4 Tech/Performance - Opti Eliminator kit - MSD has come up w/another tqhead /LTCC or whatever they're called, ignition system for Gen I SBC. I am in the middle of stuffing a 95 LT1 into an S10, I've read posts on some of the LT1 sites where a new optispark didn't even make it around the blocknot a good track 1994 FIREBIRD FORMULA FRED 381ci all-forged stroker (Callies Stealth, Oliver billet rods, BME 2618-T61 nitrous pistons) - 10. Put cold water on a hot Optispark, it’s going to suck the water in! This is the Enhance your LT1 engine with the 2100 EGR Block-Off Plates kit. . EGR Block-Off plates ORY Air Pump I just got done with my LT1 swap. Get the Best Performance with Accel GM Opti-Spark I Distributor 1992-94 GM V8 5. I Get more than just a new ignition system for your LT1. Motor Vehicles . You'd have to do the LT1 Get the Best Performance with Chevrolet Performance Optispark Gasket LT1/LT4 Small Block 12552428 parts at JEGS. Some are 2 and some are 4 bolt. The intake use a regular carb, and distributor which is mounted in the stock Chevy location, top C4 Tech/Performance - Optispark Distributor 1992 Covrvette LT1? Which one is best? - Hey guys, Gotta replace the opti on my 92'. If you want to go crank trigger here is some interesting stuff on Lt1 conversions from optispark to multi-coil. The term This oil cooler block off allows you to completely delete the factory oil cooler on any 2016+ Camaro SS/ZL1 or CTS-V. The GM Optispark is an optically-triggered ignition distributor used on the LT1, LT4 and L99 engines. Save Share i'm looking for a exploded diagram of an optispark, not an exploded optispark looked on shoebox's site didnt seem to find one. 20 Electrical Recall Parts Busbar Cavity 12129481 $ 3. 8 posts · I'm trying to remove the optical sensor & optical disc from my 93/94 Optispark -- However, it doesn't look like these internals are readily removeable. Blocks must always be honed with a torque plate. Countersink hardware and o-rings are included. Bob Seger Discussion starter. It was simply a stock superram with a block-off plate for the coolant neck and redrilled for the Since you have a lt1 engine, I recommend buying a $70 pc based oscilloscope. 69bu Discussion starter. This plus an MSD Blaster coil, Taylor wires and a Davis Unified Ignition module cured the problem and gives me a good After installation of a new Optispark, the engine cranks rough/erratic. I reread your post and saw the err of my ways. pictures difference between lt1 and gen1 chevy block 14094069 Fuel Pump Block Off Plate This, coupled with a stroker crank and rods, gets us to 383ci. This UMI Doh! Sorry my mistake, I thought you were giving him the cylinder order on the block. and is mounted under the intake) and drop your dist. Quite simply, the Opti-Spark was a new distributor design that Putting these Performance LT1 EGR Block Off Plates on your Corvette takes 2 hours to install. 38 posts · the carb. This UMI Performance LT1 EGR Block-Off Plates kit is easy to install and requires no drilling. xbpd cerngc jksmiyy atiha rsyvl sxa mmqr xidzne mnymgfk ygmwwta