[learnerstang]

ok so the 5.0 HO ...... does it have gt40 heads ? and also can i put a e303 cam in without having to do valve springs and rockers ?

[Sleeper_Stang_89]

I believe the stock heads are the E7's

[93hatch]

yup, and you can but its never recommended to do a cam without upgrading the 15+ year old springs

[83fox]

you should be able to. remember to check your piston to valve clearence to make sure. and you really should upgrade those springs like 93hatch said

[learnerstang]

hmmm ok well ill see if i can dont u need a tool to hold the valve while u change the springs out ? and ok so i would have to check valve clearence ? but ok cool well thats what i want and e7's huh are those good heads ? sorry for so many questoins i am just super excited i finally got a 5.0 gt

[Darrell]

Originally Posted by learnerstang ok so the 5.0 HO ...... does it have gt40 heads ? and also can i put a e303 cam in without having to do valve springs and rockers ?

The 5 liter HO was the engine that came in Mustang GTs and Lincoln Mark VIIs. They have E7TE truck heads, not GT40s. The 93-95 Cobras have GT40 heads. Ford Explorers came with GT40 and GT40P heads. Both GT40 and GT40P heads out flow the Mustang E7TE heads.

[learnerstang]

wow ok thanks and since u all know alot more then me lol umm does upgrading from stock headers to like bbk shortys make a big difference ? like i dont wanna spend money where i dont need to cuz i am kinda on a budget

[93hatch]

Originally Posted by learnerstang wow ok thanks and since u all know alot more then me lol umm does upgrading from stock headers to like bbk shortys make a big difference ? like i dont wanna spend money where i dont need to cuz i am kinda on a budget

longtubes or save your money

[notchabovechevy]

longtubes will make you change your h or x pipe I'd say shorty equal length with an x pipe should sound good and pick up the power

[Hunt_chevs]

jumping from shorties to longtubes doesnt get a massive gain in hp,.. i believe about 4-5 hp or something like that. But like 93hatch said, i'd probably save the cash for headers and spend it on a set of gears or somn.

[Darrell]

Originally Posted by Hunt_chevs jumping from shorties to longtubes doesnt get a massive gain in hp,.. i believe about 4-5 hp or something like that. But like 93hatch said, i'd probably save the cash for headers and spend it on a set of gears or somn.

Its more than that but every car varies. Going from stock shorties to aftermarket shorties is about 4-5hp in best cases. From what I've seen shorties to full length is typically 10-15hp and an equivelant amount of torque.

[learnerstang]

hmm ok thanks guys thanks alot i didn't know all this stuff .... can i get ur guys opinions on a intake plenum ? upper and lower of course but i wont be doing anything else but exhaust and later down the road probably just a cam so which would be best ? i hear the cobra is the best bet but idk anyway thanks again for all this knowledge

[Darrell]

Originally Posted by learnerstang hmm ok thanks guys thanks alot i didn't know all this stuff .... can i get ur guys opinions on a intake plenum ? upper and lower of course but i wont be doing anything else but exhaust and later down the road probably just a cam so which would be best ? i hear the cobra is the best bet but idk anyway thanks again for all this knowledge

The 1997 1/2 and newer Ford Explorer V8 heads (GT40P) and intake are a nice upgrade to a stock Mustang engine.