94 350tbi/700r4 swap

[hemi43]

Just try a gear change and see what happens. 35's with a 3.08 gear is just too stiff IMO. If you were to put something like a 3.73 in your truck and not do anything else, I bet your performance and fuel economy would improve because the engine will be in a happier RPM range. If it was me, I would put 4:11's in it, this way if I ever wanted to upgrade to an overdrive transmission I would already have the proper gear ratio.
My 2 cents.
Dan

[Smokey burnouts]

Originally Posted by hemi43

Just try a gear change and see what happens. 35's with a 3.08 gear is just too stiff IMO. If you were to put something like a 3.73 in your truck and not do anything else, I bet your performance and fuel economy would improve because the engine will be in a happier RPM range. If it was me, I would put 4:11's in it, this way if I ever wanted to upgrade to an overdrive transmission I would already have the proper gear ratio.
My 2 cents.
Dan

Thanks man👍
Would 4.10's be terrible with the th350 if I never went to a OD trans? Cause if the gear swap helps I foresee me just doing power adders to current motor or just saving up and doin a 5.3 swap and keep the th350

[hemi43]

Originally Posted by Smokey burnouts

Thanks man👍
Would 4.10's be terrible with the th350 if I never went to a OD trans? Cause if the gear swap helps I foresee me just doing power adders to current motor or just saving up and doin a 5.3 swap and keep the th350

Terrible? absolutely not !!
With your 35" tires and a non-overdrive transmission like your T350, you would be reving around 2430 RPM at 60 MPH. IMO that's not a bad RPM for an older engine.
If you decided to put an overdrive in with the 4.11 gears, you would be reving about 1650 RPM at 60MPH.
I like to see an engine at around 1800RPM @ 60 MPH, so realistically you could go up to a 4.56 gear.

I only have 33" tires and that's why I opted for the 4.11's
Dan

[Smokey burnouts]

Hemi.... So if I were set on keeping the T350 and 35's would you go 3.73 then?

[Smokey burnouts]

Since I'm thinking change the gearing in the rear is way to go(well yall informed me this was way to go). Regear stock axles or are there junk yard axles I could find with 3.73 or 4.11 gears that would bolt up under these trucks without having to move spring perches?

[hemi43]

Originally Posted by Smokey burnouts

Hemi.... So if I were set on keeping the T350 and 35's would you go 3.73 then?

Either will work. If you plan on doing mostly city driving, then the 4.11's would be good. If you plan on doing quite a bit of high speed driving then the 3.73 would be better. It's really just a matter of preference.
As far as swapping out complete axles, I would prefer to just change the ring and pinion. It will be cheaper in the long run.