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4.11 gear to big? With Turbo 350 combo

7K views 9 replies 10 participants last post by  DOUG G 
#1 ·
I have an almost stock 396. 400hp. I am running a TCI turbo 350 (3000)stall and I'm getting ready to change ring and pinion to a 4.11. Has anyone else ran this size gear with a turbo 350.(ratio 2.52,1.52, 1.00) I just want to make sure I can finish the quarter mile without taching out.(under 6000) (I have 26" tires)

Thanks
 
#6 ·
Yep you might want to run a taller tire. A buddy of mine had a 68 with a 10:1 SB 350. TH350 and 4:11's eventually the tranny was shot(smoking) from highway mileage because of too short of tires. It hauled *** though. After reapiring the tranny and putting bigger/taller tires it would cruise the highway no problem.
 
#10 ·
Just for info 3.73's,th350,26" tire = 3300rpm's @ 65mph.(approx.) 4.10's will be a little higher.

So if you plan on any hiway driving, you might want a taller tire to bring down the rpm's some ?

That's why I went 3.73's... compromise.
 
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