BlackMage

Ok here goes, i have a 351w that i had machined and i put in a forged rotating assembly, crank, rods, pistons, and right now i do not have the cash to buy a good set of heads, so i put the stock ones back on, everything got magnafluxed and cleaned so it is all in good working order. but i need to know how it will perform with a decent intake manifold and carburator. so i guess my question is will i make at least some decent power right now with the stock heads and a mild cam?? i know you guys need more info but just let me know if im sorta headin in an alright direction

ts91stang

stock heads are going to be really restrictive on a 408. depending on the year of the heads they might actually be 302 heads so stock heads on a 408 arnt going to breath at all. you can use them but it wont be able to breath at all.

MadMan@TheWheel

My advice would be to save some duckies and get into some after market heads. Stock heads are just not going to impress you much.

BlackMage

yea im def goin aftermarket for the heads, jsut not yet, money doesnt grow to well on trees so thats why im stickin with the stock ones right now, i jsut wanna get the thing running with the stroker internals and build off it from there.

MadMan@TheWheel

Right. It will run yes, but it will be night and day once you get the H/C/I combo where it needs to be. Until then, your choking it

BlackMage

one more question for ya madmen if i may, do you think i will need to have the 2 bolt mains drilled for four bolts or girdled at all?? really not looking to go over 500-600 hp once everything is said and done. but as long as i got the engine still on the stand do you think its worth it?

uedlose

No I dont think doing the 4 bolt will be needed at that power. 351w blocks will hold big power and no on the girdle also. I have seen many 9sec cars with stock 351W block and power adders.

WhiteWindsor

You can weaken block by drilling for 4 bolt mains, not necessary. I disagree about the girdle, it may not strengthen block, but it doe's keepcrank from walking and could prevent further damage if something in bottom end were to break.

kweb288

ive hear this topic a lot and would like to know what you guys thought since it was mentioned. how much power can a stock 351w hold? 69era, 75era, and 94 era.?

BlackMage

yea mine is a 92 351w out of a ford pickup, thing had 35000 miles on it was in an accident but engine was still running great when i pulled it