TH350 questions

[Harry96]

Just had a quick questing on TH350 power handling, was planning on building a 383 this year for my 79 and was just browsing jegs and found a 383 crate engine cheaper than it'd cost me to build one, also has the option of buying a transmission with it. Real question here is would a stock 4x4 TH350 be able to hold up to 440 ft lbs or should i bite the bullet and spend the extra money to get a TH400 with the engine and find a tailshaft for a transfer case?

 

[yevgenievich]

Tire size comes in play, but generally either a good rebuild on th350 to handle the power or th400/4l80e/sm465/nv4500/other hd trans.

 

[Harry96]

Completely forgot about tire size, yeah ill probably just bite the bullet and get the 400 with the engine and regear to make up for the 35s

 

[frankenstien]

my th350 lasted about 8 years with a 500hp 383 with a 2500 stall converter, and a tci full kit with brown clutches, shift kit, and hardened outer race, 4.56's and 285's and i was mean to it.

it broke the outer race and made a mess, if the 400 is cheap enough go that rout and build it once, im into the 350 for about 800-1000$ to fix and build strong enough for this to not happen. if you go the 350 route id up grade to the 36 element sprag and a 700r4 low reverse support

 

[Harry96]

Thanks for all the help, definitely going the 400 route