Re: heads ??
Quote:
Originally Posted by 1987StangL268X
Stud size is either 3/8 or 7/16. I am thinking it is 7/16. I run 1.7 roller rockers
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You mean the factory pedestal?
It's 5/16, you wont need a stud unless you convert to the stud conversion, you have bolt down rockers.
1.7's work for me, but im foing to 1.6's and really dont know why lol.
To answer the question, the p is a better flowing head due to the angle on the plug , some people will argue, but #'s dont lie, the non-p has a bigger exhaust valve that responds to porting quite well, so ported 40p against ported non-p is probaly pretty close with the p still maintaining better economy.
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X-Texas highway patrol ssp 1990 coupe - exploder Gt-40 iron heads, Explorer intake, 19 lber's. E-cam. crane 1.7 rollers. 190fp. 75mm maf. 65mm tb, tubular subframe connectors, mac cai, Asp crank pulley, T-5, king cobra clutch, flowtech 1-5/8 unequals, mac X-pipe Frpp driveshaft, lakewood Lca's.
race weight 3,160
12.69 @ 107.35, 1.71 60' 26x8.5 drag's 3.90 gear
13.20 @ 106.91 - 235/60/15 firestones 2.3 60' 3.27 gear
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