Aamiinjdid

 So a 305 up against a 350 (even at the same horsepower) will always lose to the larger engine because the 350 will make more torque I completely agree that a 305 can be built to make 450 hp That's not too difficult The engine is limited to smaller heads with 194inch valves because larger 2inch valves won't clear the cylinder wall A 350 & 305 have the same 348 stroke rods, crank and large journals all sbc 68 and up are all large journal so the crank will interchange but a 350 has a 400 bore and the 305 is 3736 so the blocks are the difference350's are both 2 & 4 bolt mains there is even a rare Canadian 305 truck block that has 4 bolt mains casting# 305 to 350 TBI swap , 0739 PM I helped a guy form church put a 350 he bought into his 1990 chevy truck The thing runs, but has a idle and part throttle stumbles I runs fine at WOT but I am guessing it is lean We used all of the parts off the 305 on the 350 Gm 305 Reman Marine Base Engine V8 350 5 0l Vortec 5 0 Marine Eng...