Looking for help tuning an LT1
Thread Starter
Intermediate
Joined: May 2020
Posts: 28
Likes: 0
From: Portland, OR
Looking for help tuning an LT1
I have a 355 LT1 making about 410HP on a dyno when carbureted. With stock exhaust and manifolds I would expect it to make around 360 in the car. I was wondering what I could do tuning and injector wise. I'm pretty sure stock injectors could support the power but with 195k miles on them it would make sense to replace them. I was thinking of running a stock TB and just hand port the intake manifold to match the heads. What could I do tune it; would it make sense to get the hardware and software and learn to do it myself? Any help would be greatly appreciated.
Le Mans Master
Joined: Sep 2013
Posts: 6,192
Likes: 750
From: near the thumb in the mitten
If you still have all the OEM EFI 94 is a OBD1 reflash PCM. You will need laptop with proper software and a cable with 16 pin aldl adapter. Your carb dyno sheets should be able to guide you on injector and fuel pressure requirements. The carb intake has longer runners than the LT1 MPFI.manifold so dyno results will be different
Heel & Toe
Joined: Apr 2021
Posts: 23
Likes: 1
I have a 355 LT1 making about 410HP on a dyno when carbureted. With stock exhaust and manifolds I would expect it to make around 360 in the car. I was wondering what I could do tuning and injector wise. I'm pretty sure stock injectors could support the power but with 195k miles on them it would make sense to replace them. I was thinking of running a stock TB and just hand port the intake manifold to match the heads. What could I do tune it; would it make sense to get the hardware and software and learn to do it myself? Any help would be greatly appreciated.
I am kinda in the same boat...
I will try to follow your thread .
Best of Luck
