adshr

I have a 89 lx 5.0 that is mostly stock it has a e303 cam with stock heads. I am got a professional product intake 70mm throttle body and 24lb injectors i picked up cheap and i am looking at a set of gt40 heads. How much should i see for a hp gain.

Bubba 95SN

Let the clutch out shove the skinny padal to the floor. Your eyeballs are going so far back into your skull you will need a toilet plunger to get them foward again.

mjr46

this is what you should see:
https://mustangforums.com/forum/5-0l...bers-read.html

motorman524

Probably a little less than stock with that cam. Save up some money and do a real heads cam and intake setup.

adshr

so i am wasting my time putting the heads and intake on cause i am going to lose power

uedlose

I would think you should pick up 30 with both maybe a bit more.

motorman524

With that cam you are definitely wasting your time. I had one, NO FUN. No need in running those 24lb injectors either.

87 T TOP GT302

Aren't you glad you live in a coutry where you can make choices .A lot will tell you to go aluniinum,and thats great if you 've got $ 1500 or so, but for the money I would take what you got and the gt40's as far as possible.I've got those heads on my 87 .If you decide to go with them make sure you have them ported at least on the exhaust side .You'll feel the difference.Again some will say this is a waste of Money but that your choice remember freedom to choose. Also check out Thumper Heads .They have done wonder with these and other ford heads.You can find these heads on 93 Cobra's and also 95 and 96 Explorer .Also the intake on there is the Cobra version as well.