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Old 02-18-2018, 09:48 PM
694.1 694.1 is offline
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A steaming pant-load. And FYI, I am told that 100LL has a shelf life of 5 YEARS. One gallon a tank full should be plenty to protect valves.

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Old 02-18-2018, 10:12 PM
billkinney billkinney is offline
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A steaming pant-load. And FYI, I am told that 100LL has a shelf life of 5 YEARS. One gallon a tank full should be plenty to protect valves.
The engine has 10.5 pistons and a guess hp of 400. Does the fuel lubricate the valves? I will not pay to rebuild a motor with 400 miles on it.














































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Old 02-19-2018, 09:24 AM
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grivera grivera is offline
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The engine has 10.5 pistons...
Did the builder say this? No such thing in a Pontiac as the overall chamber size and piston valve reliefs determine compression.

Listen to the advice you've gotten here. Either the builder is incompetent or he is BS'ing you so he doesn't have to honor the warranty.

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Old 02-19-2018, 12:33 PM
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1968GTO421 1968GTO421 is offline
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Listen to the advice you've gotten here. Either the builder is incompetent or he is BS'ing you so he doesn't have to honor the warranty.
X2. I agree with everyone else on this. Best of luck getting it resolved.

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Old 02-18-2018, 11:24 PM
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PunchT37 PunchT37 is offline
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A steaming pant-load. And FYI, I am told that 100LL has a shelf life of 5 YEARS. One gallon a tank full should be plenty to protect valves.
I used that gas for a long time in a 455 with 62 heads. Good gas. We had some in a Harley motorcycle. It sat for many years. Started and ran fine with that gas. Did not have the "old gas" smell.

Last edited by PunchT37; 02-18-2018 at 11:45 PM.
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