88 FIVE.0

Hey guys, new to the forum but not really new to mustangs, but I've never done a build with gt40 heads. I was wondering what kind of power is to be had with these heads ported with crane 1.6 roller rockers and upgraded valve springs etc. With a stock cam or possible e303 (i was told the car had an e cam but haven't verified due to crap idle with speed density, converted to mass air but idle is still messed up) just looking for a low buck build and was told this was the way to go plus a little giggle juice. Inputs greatly appreciated

Five0hFox

You can't expect much of a gain when using stock parts.

88 FIVE.0

I figured that out a long time ago, I just wanted something that wasn't gonna destroy my pocket but at the same time beef it up a little, trust me I've spent plenty on heads cam combos I just want a low buck build

9redfox3

gt 40 heads, 1.7 crane rockers ,65 or 70 mm Tb, walbro fuel pump 255, cobra intakes some good shortie headers 30-50 hp?

88 FIVE.0

Yea I got the gt40 exploder intake and the Ford racing gt40p headers , fuel pump is already installed just need a regulator. I'm in the process of tearing down the top end now...

furiousjoe

you can gain some decent power with Gt40's. If you are handy with some burrs, try porting them yourself. guys hit 300+ with a good port job. it is a lot of work but hey, winter is coming, a few hours every weekend is no biggie. i have this link bookmarked. maybe it will help you, it explained a lot to me. i'm gonna be doing a ported gt40 setup over the winter.
http://www.fiveohinfo.com/performance/gt40-gt40p.html

2011scgt

that's bs.

2011scgt

P headers????

88 FIVE.0

Yea the Ford racing ones

88 FIVE.0

So I got the heads today and man are they hooked up, crane 1.7 roller rockers comp cams springs, back cut valves, etc on top of that I got Ford racing headers a cobra lower gt40 upper, 24lb injectors, 75mm maf, and all the gaskets for install. All for 850, I think I came up