LT1 out of time?
Thread Starter
Registered User
Joined: Dec 2008
Posts: 3
Likes: 0
From: Northeast Alabama
LT1 out of time? Took my car to the shop to get the opti replaced. Went to get it and now its runnin like ****. Valves chattering very, very bad, starter kicking back, and popping back through the exhaust as well as the air intake when you try to crank it. The mechanic i took it to or should i say the dipshit said the MSD box went out as well and he had to hook the ignition back up like factory. So whats my problem guys? did he put my opti on wrong or what? Any help on fixing my car would be greatly appreciated
i have seen this a few times,the optispark is not lined up on the correct splines causing the misfire,they need to redo their work and pay closer attention! give them the opportunity to get it right....
Trending Topics
LS1 Tech Stories
The Best V8 Stories One Small Block at Time
Topdon ONE vs. Artidiag 800 BT2: Which is the Diagnostic Tablet For You?
Pouria Savadkouei
Gas Monkey Built a 6-Wheel Ferrari Testarossa With a Corvette LT4 Engine
Verdad Gallardo
7 Most Reliable High-Performance Engines GM Has Ever Built
Verdad Gallardo
Amazing '71 Camaro Restomod Is Modern Muscle Car Under the Skin
Verdad Gallardo
6 Common C5 Corvette Failures and What's Involved In Repairing Them
Pouria Savadkouei
Retro Modern Bandit Pontiac Trans AM Comes With Burt Reynolds' Autograph
Verdad Gallardo
Top 10 Greatest Cadillac V Series Performance Models Ever, Ranked
Pouria Savadkouei
Top 10 Most Powerful Chevy Trucks Ever Made!
Hennessey's New Supercharged Silverado ZR2 Has 700 HP
Verdad Gallardo
TECH Enthusiast
Joined: Nov 2004
Posts: 660
Likes: 0
Your two most probable solutions have already been posted (plug wires and timing). Like was stated, to replace the opti, you have to remove the plug wires from it, so thats where the mix up would take place.
What year is the LT1? If it's 93-4 then it's easy to have the splined shaft installed incorrectly. If it's the 95-97 vented setup, I doubt the timing is off. I remember even trying to put the dowel pin into the other holes just playing around and it wouldn't go.
What year is the LT1? If it's 93-4 then it's easy to have the splined shaft installed incorrectly. If it's the 95-97 vented setup, I doubt the timing is off. I remember even trying to put the dowel pin into the other holes just playing around and it wouldn't go.
I agree, the spline is just off or a plug is crossed. The wires are hard to mix up though, they are all really length specific, if it wer my car i would fix it myself, specially if the opti has to come off. I'v seen too many things go wrong with shops fixing cars wrong. Like my buddy's tranny cooler lines not getting put back on with clamps=5 mile tranny life lol. Oh And your msd box is probubly fine.
