I bought a 13:1 468 gen IV big block Chevy that was built ten years ago and put in storage. The block has o-rings and the new dart heads are machined around the combustion chamber as well. My goal is to get more compression.
The motor has SCE copper gaskets P/N 013524 which is a 4.520 bore, .043 thickness and a compressed volume of 11.307cc.
The only reason I can think of running a gasket that big on a 4.310 bore motor would be to clear the intake valve where the relief is in the cylinder? The heads are pro 1 325’s and have a 2.25 intake valve. I put clay on the side of the cylinder into the block relief and spun the valve train, but it’s still difficult to tell how close the valve is to the relief.
My plan is to order SCE copper gasket P/N 013322 which is a 4.320 bore, .021 thickness, and a compressed volume of 5.044cc.
1.) Do you think the gasket will interfere with the intake valve?
2.) Is there any other gasket that might work better considering the o-ringed block and heads?
P.S. There is plenty of valve to piston clearance. Also this motor is not going in a boat.
Thank you for the advice.
The motor has SCE copper gaskets P/N 013524 which is a 4.520 bore, .043 thickness and a compressed volume of 11.307cc.
The only reason I can think of running a gasket that big on a 4.310 bore motor would be to clear the intake valve where the relief is in the cylinder? The heads are pro 1 325’s and have a 2.25 intake valve. I put clay on the side of the cylinder into the block relief and spun the valve train, but it’s still difficult to tell how close the valve is to the relief.
My plan is to order SCE copper gasket P/N 013322 which is a 4.320 bore, .021 thickness, and a compressed volume of 5.044cc.
1.) Do you think the gasket will interfere with the intake valve?
2.) Is there any other gasket that might work better considering the o-ringed block and heads?
P.S. There is plenty of valve to piston clearance. Also this motor is not going in a boat.
Thank you for the advice.