The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Swap TH350--->700R4????

fleetsidelarry · 06-22-2016, 08:18 AM

what the others said.

if you want, you can play around with some calculators to get ideas:

this one needs tire diameter and transmission gear ratio-- http://www.wallaceracing.com/calcmph.php

for the tire diameter (if you want to see what a different tire does)
http://www.wallaceracing.com/tire-aspect-calc.php

for the 350 TH the trans gear is 1.0, for the 700r4 it is .7 in OD

depends on what sort of driving you intend to do. the 3.73 gives the best acceleration but if you get out on the highway much you might not like it with the 350. I have a 700r with a 3.07. I leave it in D (3rd) around town (tires are 275/60r15)

06-22-2016, 08:18 AM	#6
fleetsidelarry Senior Car Nut Join Date: Jan 2008 Location: shellman bluff, GA Posts: 1,411	Re: Swap TH350--->700R4???? what the others said. if you want, you can play around with some calculators to get ideas: this one needs tire diameter and transmission gear ratio-- http://www.wallaceracing.com/calcmph.php for the tire diameter (if you want to see what a different tire does) http://www.wallaceracing.com/tire-aspect-calc.php for the 350 TH the trans gear is 1.0, for the 700r4 it is .7 in OD depends on what sort of driving you intend to do. the 3.73 gives the best acceleration but if you get out on the highway much you might not like it with the 350. I have a 700r with a 3.07. I leave it in D (3rd) around town (tires are 275/60r15) __________________ Larry Last edited by fleetsidelarry; 06-22-2016 at 08:34 AM.