Thanks for the service book info.
The first test I didnít have the carb opened up.
Second test with WOT 183 psi, no outliers
Third test, WOT, 20cc 10W40 in each cylinder, 187 psi, not outliers
Appears I need to find 100 octane since the engine is somewhere between 10.25-10.5.
On another note I installed a Summit Aluminum radiator and twin cooling fans with temp kit, keeps it real cool.
The full UMI suspension kit seems real firm, still needs alignment.
Iím disappointed on one choice, I found a thread on here that stated to use a 67-74 Camaro steering box, my 3/4 ton crew cab short box turns tighter than this. DONíT Do It!