In the process of building a 383 stroker for my 1991 crewcab 4x4 which will be used for towing a 26ft trailer. The engine will have stock 76cc heads c/w original tbi intake and throttle body. The cam is an extreme 4x4 comp. Cam. 12-235-2 grind ( .447/.462 lift, duration 210 218 lift @50, 111 lobe separation) . unit has hypr. Flattop floating pistons, eagle cast crank, 5.7eagle rods. 9.2:1 comp. The engine is for max. torque between 1800-3500rpm. My question is will the stock tbi be enough to feed the displacement, and will I require a new prom for this application? Also, has anybody else done this tbi stroker setup before that can give me tips for the prom setup

thanks
pete

 

Was the original engine a BBC if so your in good shape. If not then you would be way ahead using a BBC throttle body (earlies have bigger injectors)

IMO, bad choice on heads, the large chambers are more PRONE to detonation then the smaller ones, and with towing that will be an issue
HTH

 

this is an 350sbc and i was looking at using the oem heads first to see how the truck performs. if not satisfied then i will by the trick flow 23deg. this will wake thinks up. will my prom be ok for now with the stock heads?