My son's 11:1 350 sbc had a small cam when he bought the car. '78 Z-28 Camaro with 48k on the clock, been in storage since the early 90's, nice 80's throwback. I was seeing 240-250 psi cranking pressures with it, and lots of pinging. We put in a .525" lift Lunati Voodoo cam, with a lot more duration and lift than the old Crower "Beast" grind. It still has 225psi or so cranking pressure, but with a good distributor recurve, limiting vacuum advance to 10° on the can, and good carb tuning, it's running really good now. Engine runs real cool, makes great power, and doesn't ping. It can be done. Stepping up with the cam helped out a bunch, but so did the bigger intake, Performer RPM vs. Performer.
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Darren P.
'69 Firebird 461/th400/3.36/4wdb/ Midnight Green Sold
'64 El Camino, 468/Super T-10/9"/4wdb/eternal project
'05 Springer Classic
'07 Solstice GXP, wife's car
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