MSD OPTISPARK 92 CORVETTE ISSUES - LS1LT1 Forum : LT1, LS1, Camaro, Firebird, Trans Am, Engine Tech Forums

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Old 12-05-2007, 09:54 AM   #1
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Unhappy MSD OPTISPARK 92 CORVETTE ISSUES

Hi All! Im from RI. I bought a 92 CORVETTE! OW! but, I blew the engine on the highway after a heater hose blew. that was a year ago.
(mind you - im young) I had the engine totally professionally rebuilt.
I made it a 383 lt1 stroker... 400 horse... <>...I installed the engine (with my mechanic) and now got to the point where... the whole engine is completely installed. everything is connected... and i am at the point of trying to button this disaster back together. now for the problems part..

after many trials and problems... i realized (from the awsome forum) that my opti (oem from factory) is problematic and is beat and bad. the car backfires with this dist. on it and wont start. So, I bought the MSD optispark for my lt1. AHHH! now the drive coming out of the engine (from timing cover) doesnt fit into the new msd distributior that i just bought because it ALSO HAS A DRIVE COMING OUT OF THE BACK OF THE DISTRIBUTOR. I am going insane. I was told (by my mechanic) that in order to remove the timing cover, in order to remove the drive that goes into my stock dist. i would have to PULL THE WHOLE ENGINE AGAIN!
I cant take that whole thing again. it cost me a lot of money, and time.

What do i do? Should i buy another NEW distributoir? the OEM one this time? I dont know anymore. Ive spent... somewhere in the hood of 10 grand trying to get this car to run again, and it has turned ugly every time.

This forum is my last hope. please help me. what do i do next? I looked at another post that compared the MSD and the OEM gm distributor, but it doesnt mention my issues at all.

please help! or email me at thunder354@hotmail.com and tell me what i need to do. any help is greatly needed and appreciated.
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Old 12-05-2007, 11:48 AM   #2
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what year distributer did you order as there are 2 diff ones early models like yours and late 94 up as the drives were diff
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Old 12-05-2007, 12:02 PM   #3
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i think you just need the shaft that goes in between the opti and the dowl pin, or am i reading this post wrong.
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Old 12-05-2007, 12:24 PM   #4
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I ordered the correct model for my year corvette...

part #8381 msd optispark 92-94 lt1.

i have the early model vehicle and the correct part.. according to the person i bought it from off ebay (already sent it back, and it was confirmed that it was the correct one.) the 94 -96 style is totally different.
If you want, ill take some pics of the problem i am describing, as it may help you better understand what i am talking about. would it?
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Old 12-05-2007, 12:37 PM   #5
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Just pull the little splined shaft out of the cam gear. Normally, it comes out with the opti. Make sure you index the opti properly when you re-install.
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Old 12-05-2007, 01:39 PM   #6
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Just pull the little splined shaft out of the cam gear. Normally, it comes out with the opti. Make sure you index the opti properly when you re-install.
thank for the response!
when i pull this thing out... should it be hard? should i have to take OFF the timing cover? or is it just a simple pull out (with a plyer?)? I dont want to force it out.. is it attached internally in any way?

thanks again!
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Old 12-05-2007, 02:25 PM   #7
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Once the opti is off, you should have access to the shaft. Nothing more to do than just yank it out. Maybe it was jammed in there improperly (indexed wrong) to make it stick. Like I said, it normally stays on the opti. It might even be why the engine will not run right.
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Old 12-06-2007, 09:10 AM   #8
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thank you shoe box ....

As soon as i get the chance, this weekend or early next week, im going to just back on that car.... my baby... so hopefully this pin will come out with ease. my mechanic tried pulling it out by hand, only to tell me that me thinks i need to remove the whole timing cover .. and remove the engine again... maybe a ploy to make more money?
but, i want to try to pull it out with a plyer or something and see how that goes. i have highly detailed shop manuals (on computer) of how and take the thing apart, but it doesnt mention the pin to answer the questions ive had thus far. I hope this works. Ill let ya know...

thanks
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Old 12-06-2007, 02:13 PM   #9
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The thing just slips in the cam gear. Nothing should hold it (unless, like I said, it was jammed in there improperly).
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Old 01-16-2008, 09:28 AM   #10
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Yo shoe box! your the man! after your advice, I FINALLY FINISHED BUILDING MY CORVETTE! THANK YOU SO MUCH! Ill post a pic as soon as the snow melts

but, hey.... at least i ran it all weekend...
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Old 01-16-2008, 09:39 AM   #11
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Good to know. Thanks for posting back up with your results.
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