i have a 83 3/4ton 350 4 speed. i was looking at complete motors from gmperformance. theyre pricey but unless you know a reputable shop to build it. i thought if im gonna pay 6K for a 383, why not pay 8k for the 502 but the issue is: can the old truck really take the 502, im not planning to race it, infact, i baby it. can the 4 speed take it? i guess the rear end is solid.
The 14 bolt rear will be well able to take the 502. Is it a full floater? Or semi floater? (Hub stick out from center of rear wheels? or not)
Both of those will take a LOT of abuse, my blazer has a pretty stout 383, with a 4 speed and a 14ff rear. Lets say I beat on it pretty hard, and both have taken a pounding quite nicely.
Either way, I'm sure you will have fun with it.
Why not check out some motors from jegs/summit? They have comparable motors to GMPP but cheaper, also check out Competition Products. They are more based towards whole-sale stuff. But they have some pretty good deals!
The 14 bolt rear will be well able to take the 502. Is it a full floater? Or semi floater? (Hub stick out from center of rear wheels? or not)
Both of those will take a LOT of abuse, my blazer has a pretty stout 383, with a 4 speed and a 14ff rear. Lets say I beat on it pretty hard, and both have taken a pounding quite nicely.
Either way, I'm sure you will have fun with it.
Why not check out some motors from jegs/summit? They have comparable motors to GMPP but cheaper, also check out Competition Products. They are more based towards whole-sale stuff. But they have some pretty good deals!
just to make sure im on the right track, the Muncie 465 has 4 speeds as in L-1-2-3 , right? cuz thats what i got
id appreciate it if you know a specific shop thatll build a reliable 502, i looked at the motors on jegs and summit, blueprint and trickflow both offer 383 motors that seem to be priced reasonable but again, havent read any good things about them. i know its too pricey but better safe than sorry
just to make sure im on the right track, the Muncie 465 has 4 speeds as in L-1-2-3 , right? cuz thats what i got
id appreciate it if you know a specific shop thatll build a reliable 502, i looked at the motors on jegs and summit, blueprint and trickflow both offer 383 motors that seem to be priced reasonable but again, havent read any good things about them. i know its too pricey but better safe than sorry
ive got a well built big block on my truck with an SM465 and full floating 14 bolt.. never had an issue.. you might want a clutch upgrade, i went through a stock clutch in a month on the street.
zz502 on a 83 truck? 
