nemethjames1

i got an 88ho... if i took my stock heads off and brought them to a machine shop or someone who new something, how good of heads can stock heads be after alot of mods? would they even compare to afr heads? is it even worth the labor? any ideas? or should i just buy some good used afr's? thanks...

mdvaldosta

Stock heads will never flow as well as a descent set of aftermarket heads - their not designed as well. Don't get me wrong though, worked properly stock heads will flow nicely for a street engine. A good port job and larger valves would go a long way on a stock head - but with the price of aftermarket heads being so cheap for 5.0's its not worth it to port them unless you have the ability to do it yourself or find someone willing to do it for just a couple hundred bucks.

luckythirteen13

id get the afr heads

nemethjames1

actuly i can get it done for free, just buying the parts... but in the long run im looking for heads that will give me 350 to 450hp with a good intake and cam and other bolt ons... but i guess i wont get those numbers no matter how much money i put into stock heads huh?

mdvaldosta

350 hp is do-able NA, but 450 is gonna take some SERIOUS heads and high revving for a NA 302, now supercharging... well 500+ can be done even with stock ported heads.

nemethjames1

how much would the ave. supercharger setup run about? im looking for around 400hp to the back tires... what would i need? like 8psi? or 12? with good stock ported heads and a typhoon intake and long tube headers...? and with a setup like this would 24# injectors do? or would i need bigger?

mdvaldosta

I think 400 would be do-able with 12psi or so - but it would have to be intercooled - and no 24# injecters would not cut it - you would need at least 30# and you really should get 42's for that.

nemethjames1

im just going to go all out with these stock pieces of ****, is there a good site i can just get a whole kit for a decent price? vavles, valve springs and the other basics... im going to put a pretty big cam in it... what would be good to go with? i gotta t5... would the e-303 cam be ok? the block is fully stock... how good is the y 303? thanks

Obsol3te

Not sure if you care or not, but for comparison. I'm making around 260-270RWHP with stock as stock can be heads.

I've got all the boltons I could do, but the internals are all completely stock.
But I do have a differant cam (b303).
So I guess that's about as far as you can get without touching the internals or adding some form of FI without changing/modifying the heads.

vfast

well if your going with stock here is something
1. go with serve duty valves that have been undercut for flow
2. port the hell out of the runners
3. have the chamber worked..ie. unshrout the valve area and polished to a mirror finish....this is not needed for the runners...shave a few 1000's off the head to increase compression also do a 5 angle valve job..but the chamber work is very important