darkhorse87

This is my first post, and I dont know much about forums so please excuse me if I've done something incorrectly already?....... I'v been looking into putting a set of explorer gt40 heads(95-97.5)I believe?, and explorer intake/throttle body on my car. From my understanding the compression ratio would drop if i were to just slap these heads on my car, correct? I know a stock 5.0 HO has 9:0:1 compression. What would these heads need to be milled to if i wanted to raise my compression to say 9:5:1and in doing so would I need shorter pushrods and/or have my valves shortened????? Next these head will more then likely be coming off a high mileage explorer, what doI absolutely have to do to these heads besides new springs and lifters to insure there performance, 3 angle valve job, new seals, ect? In regards to home porting these heads, does any one have advise besides gasket matching them and grinding on that hump in the exhaust port? Ohand final questionif I were to put 1.7 roller rockers with this setup, will my speeddensity freak out?

I have an 87 Gt 5spd, speed density still, bbk equallength headers, h-pipe/no cats and flowmaster cat back, 160* thermestate and 3:73 gears.

Any info will be much appreciated

VASSAGO

dont get heads off a 95-97, you need to find heads off a 97.5 to 01, they will be GT-40p heads and intake, and it will INCREASE not DECREASE your compression, they gt-40p's are better then the gt-40's off the earlyer years and they will bolt directly onto you block, if you use 1.6 rockers you will be better off as far as the throttle body? scrap it and get you a BBK power plus 65mm throttle body and matching spacer with a egr delete, when you install the lower intake have it ported first , and you should sandblast the heads and intakes then have them high heat powdercoated like i did and they will look great, trust me you will be very happy with the head swap, also you should throw a B303 cam in there wile your apart, good luck