quickstang89

hey guys im new to the forum. i did a search but didnt come up with anything. i also looked the internet and still nothing. i was wondering if you guys knew the specs on the stock 5.0 heads. like the intake runners, stock valve size, chamber size, etc.. sorry if there is already a thread on this subject. i couldnt find it. thanks alot

notchbackmatt87

whatever the specs are they are garbage stock 5.0 heads FTMFL dont bother with them if your on a tight budget get some gt40s in money is no a problem get yourself some afrs

redpony88

they aren't any good really.... but if you're looking to get some decent heads for CHEAP get some thumper heads, they're stock ones that have been ported like crazy and they out flow the gt-40's

droptop302

worked et7e heads vs worked gt40's


Winner GT4O'S

redpony88

have you even done research? i doubt it cause if you had... you would have actually found the e7's that are ported, put up on a flow bench with gt-40's have out flowed the gt-40's.....

droptop302

Like i said worked gt40's will out perform e7'.....did lots of researchand if that was the case everyone would have worked e7's[:'(]

redpony88

cause people hear "gt40 came on the cobra" so everyone wants cobra stuff on their gt, no matter how much people may try to deny it. but what about this, can gt-40 cars run with just those heads, the b cam , and the stock intake and run a 12 second 1/4? i personally have never head of anyone doing that.... and really it'd be better to get PORTED e6's cause they have a similar design to the tfs heads. and if YOU dont believe me then idc, do some research and come back

15austin

Worked e7s will make decent power, I got 291rwhp with some check outmy sig.

quickstang89

ok thanks alot guys. i probably wont fool with them. just wondering if it was worth it. ill just get some aftermarkets.

mjr46

yes but the debate is stock vs stock ported ..yours are no where near stock with 1.94/1.60
as for stock gt-40's being out performed by stock e7's and both being equal port jobs....when doing research you guys fail to realize to have an accurate comparrison all variables on the test motor MUST BE THE SAME!!!! IE..... put the car on the dyno swap just the heads and then draw your valid conclusion.......all RESEARCH I have ever done on such the matter NEVER keeps the Test on level playing field it's always two seperate cars with slightly different mods........all things being equal a equal ported gt-40 vs equal ported e7.....with same lift numbers being used or done on a flow bench to be equal the gt-40's should flow a little more but is flow the only variable that matters ?? no!........and I'm not of the philosophy that since they were on a cobra I'd install them on my gt!! it's more of a since the gt-40's have 1.84/1.54 valves and not 1.78/1.46 valves is the reason I'd pick gt-40's....which is the main difference over the e7's...and the P HEADS have even alittle more benifit over that