Gearing for turbo 408
Thread Starter
Joined: Oct 2007
Posts: 604
Likes: 1
From: Gainesville FL
Gearing for turbo 408 So i have switched from supercharged to a turbo setup . I didnt change any thing else .I have a set of 3.73s in it now . Would 3.23s be to much ? Car makes 740hp and 830 TQ on 10lb and 856hp and 910TQ on 16lb set on high boost . This car will get a e85 tune soon for 20-22lb and should make well into the 1k. Here is what i have
built 408 with 9.5-1 CR
BW S488 v2 SXE housing with 1.15ar turbo
ported lsa heads
wiseco -15cc boosted pistons
wiseco boost line rods
k1 crank
tick performance stage 2 ls3 blower cam
Built tr6060 trans with a f body tail shaft
Strange Dana 60 rear with 3,73 gears
26.4 dim tire
I had planed to install the 3.23 but thinking it may be to much . Might stick with the 3.37s . What do u all think ? This is my first turbo build . Thanks
built 408 with 9.5-1 CR
BW S488 v2 SXE housing with 1.15ar turbo
ported lsa heads
wiseco -15cc boosted pistons
wiseco boost line rods
k1 crank
tick performance stage 2 ls3 blower cam
Built tr6060 trans with a f body tail shaft
Strange Dana 60 rear with 3,73 gears
26.4 dim tire
I had planed to install the 3.23 but thinking it may be to much . Might stick with the 3.37s . What do u all think ? This is my first turbo build . Thanks
I run a 3.31 gear (8.8" Ford) and 26" tall tire with T56 Magnum and once in boost it works well. Turbos like being under load longer.... than a supercharger (which needs to ramp up to speed with RPMs). I've only ran pump e85 in the car (tests 78-85%) and do boost by gear/time to actually use the power.
