88ttop5.0

get a tubular k member from aje i think it is swap a ls1 in it and then throw a cam and hi rev valve springs hardend pushrods and roller rockers ull make more then 400... Jk even though its true Afr heads with a cam 1.6 roller rockers nice intake and a small shot of juice will do the trick...

94StinkinLincoln

a completly stock motor with a hellion turbo can get you there or very close. put a set of heads, cam, and intake with that turbo and u got 450RWHP.

87fivepoint0

ive heard from a couple ppl if you want to build a cheap 347 stroker all you have to do it find a 351w and take the crank out of that. i mean obv you gonna have to do minor headwork but thats alot cheaper. but id get forged rods and pistons if ur gonna do that

86whitepony

edelbrock top end kit for 302 h.o. 367 hp garanteed (carbed), then some exhaust, headers, should get to that 400 mark pretty quick