FinnishMafia89

Ok so lets say I have an explorer intake manifold, gt40 heads, long tube headers and full exhaust done and a stock block/everything else stock. How much supercharged boost is safe to run?

On a side note gt40 heads or gt40p heads? I herd gt40 is aluminum and gt40p is iron and flows a little better. True?

nseoi

almost done since you have not mentioned anything about bigger injectors

FinnishMafia89

your so helpful.... Thanks for that

FLcracker9

GT40s and GT40Ps are both iron heads. The Ps have smaller valves, but flow a little better because of their turbo swirl combustion chambers. The Ps also have the spark plug located in a different position, and this requires a special header, or some spark plug wire modification. There is a GT40X head that is aluminum.

supercharged 5.0

I had 110,000 miles on my 93 and added a vortech supercharger which held the 10lbs of boost for about two weeks. Now it will get up to about 5-6 lbs of boost then i get blowbye and it pushes oil out the dipstick. Prior to installing the supercharger i did a compression check which was between 130-135 which is good. Just couldnt take the boost. New motor ready to install with forged piston with lower compression at 8.5 to 1 .