LETS KEEP THE REPLY TO MY QUESTION SIMPLE-
I SAID:
for the record.....
I run 9.4:1 on a 440.6 pack with open chamber cast iron heads.
it has a small comp hyd flat tappet cam
224° @ 050
LSA 110°
.470 lift
Engine runs great with our 98 octane but its right there on the edge of pinging. It will not tolerate 97 octane gas (which we also have at the pump) or it will start to ping.
I guess thats about as high as I want to go with no quench and a small cam on a cast iron headed motor. Its what I have tested with our gas.
THATS ON A E BODY IN FULL STREET TRIM, 4 SPEED AND 3.54 GEARS.
LIKE I SAY THE ABOVE ENGINE RUNS GREAT WITH NO PINGING, BUT WHEN I FILL IT WITH GAS JUST 1 POINT LOWER IN OCTANE,IT PINGS. SO THAT ENGINE IS RIGHT AT THE EDGE OF THE PING ZONE.
LETS SAY I SWAPPED HEADS ON THAT ENGINE FOR CLOSED CHAMBER IRON HEADS AND ALL ELSE REMAINED THE SAME. HOW MUCH MORE COMPRESSION WOULD PROPER QUENCH ALLOW ME TO RUN VS. THE 9,4:1 CR WITH NO QUENCH AND OPEN CHAMBER HEADS?
