omar_lpz

going to build a 347 stroker and want about 350-400hp range wondering if the stock block will be able to hold that much hp or will i need a better block

Joel5.0

Done right..... it shouldn't be a problem.

67mustang302

Yeah. And you can get that at the crank from a 302, and use the stock crankshaft. It'll save you money that way. If you're talking rwhp then yeah, 347 would be easier.

mjr46

stock block will hold that easy and then some

omar_lpz

do u know wats the most hp a stock 347 block will hold . with no poweradder

Mark O'Neal

Using a stroker you can make that at a lower RPM than you can with a 302....relieving stress on the block.

omar_lpz

ok thanks

mjr46

you can blow one at 300, 400, or 500 or more, it's more so in how well it it built, ie..parts used. knowledge of the machinest and how well he pays attention to detail and finally how well it's tuned

luckythirteen13

+1, its also luck of the draw. some blocks just hold better then others. 500rwhp is about the max you want to run with a stock block. a well built 347 can make 500 hp at the crank which would be perfect because thatll be about 440rwhp-ish