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Old 12-31-2002, 11:50 AM   #9
Hozer 88GTConv
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Location: Jacksonville, FL
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All 4 were within 10 psi of each other
#5 115 PSI average of 3 (all with about 3 cranks on the starter)
#6 120 PSI " " "
#7 115 PSI " " "
checking 8 now...
...engine reasonably warm, i.e. 150 degrees, 65' outside

I have a feeling it might be a bad valve seat or bad guide which, I just learned from a friend is not uncommon on Trick Flow TW heads...

If 8 comes up same, I am pulling the upper intake and valve cover and inspecting the #5 valve seal with a flashlight.

Let me know if this makes any sense to you.

Either way, the head has to come off.

Thanks for your advice.
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1988 GT Convertible
331 10:1 TW heads, GT-40 intake, MSD, TRW flattops, B Cam w/ 1.7's, MAC exhaust, 24's, 70 TB, 76 MAF, 3.73's, Pro 5.0, Koni's, Anderson PMS, Wideband 02, yatta, yatta...
One week with new motor, two speeding tickets...joy

Last edited by Hozer 88GTConv; 12-31-2002 at 12:53 PM..
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