ported and polished stock heads

XSboost

New Member
Joined
Jul 14, 2004
These head were done by Jack Merkel Performace in Clark NJ
stainless valves 1.51 ex 1.77 int, bowl blend bronz guides
factory exhaust guide was cut down to make room for viton seals(see pic)
If not you will get some smoke on start up.
comp cam spings 120lb seat psi when new most springs will lose about 10lbs
of seat psi after first run. you can use flat tappet cam or roller I was using
comp cams 212/212 504 lift with 1.55 rocker, 520 lift with 1.60 roller rocker
the rocker mount has been shaved so you can put roller rockers with out modifing the rockers. these heads were on my car for 2000 miles. my car
has gone consistantly in the 10s with these heads my best pass 10.66@130.87, 24 psi. have video of 10.78@127 22psi LT GTQ 70 turbo

If you dont pick up .5 tents with these heads I will buy them back.

I paid $1200
I would like to get $850

thanks steve
610-972-5462
 

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the heads weigh about 45lbs each I used UPS ground shipping is about $85 bucks to your door.

thanks
 
valve lift intake cfm exhaust cfm
.100 62.22 49.64
.200 132.53 99.28
.300 173.99 150.30
.400 205.52 183.82
.500 209.76 185.73
.550 209.76 185.73


stock unported with stock valves at .550 will flow around 140-150 intake and
110-120 exhaust.

thanks.
 
XSboost said:
valve lift intake cfm exhaust cfm
.100 62.22 49.64
.200 132.53 99.28
.300 173.99 150.30
.400 205.52 183.82
.500 209.76 185.73
.550 209.76 185.73


stock unported with stock valves at .550 will flow around 140-150 intake and
110-120 exhaust.

thanks.
Those are some really good exhaust numbers. The highest ive seen for the stock heads.
 
I still have these heads for sale. If your car does not pick up 5-6tenths
and 6-7mph I am not kidding, I will buy them back my best pass was 10.66@130.87mph with these heads and 70gtq I also ran them with a
te60 before my best mph 125.64 If you want just call up Jack at Jack Merkel
performace that is who did the heads. or give me a call 610-972-5462.
 
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