I usede FelPro marine because I have the forst run and some gaskets overhung in the chambers.The cheap FelPros also fit with no overhang but with 12.5 pistons I opted for the better gaskets.Its been running for 3 months and no problesm even hitting 7K.Rocky
8519s, but I drilled the dowel holes 1/16 larger. The marine gasket would be a better choice as it has the better fire ring and a larger bore. Mine has been running about the same time 499 with 11.0 to 1.
Logged
69 Swinger,3.54 Dana, 400/499, Stealth heads, Crower 262/266d, .686/.696L roller,11 to 1, 950 Bigs, E85 carb. Best so far, 10.82 @ 124mph through the mufflers.
The cheap Fels fit my heads perfectl.I had them and the 09s.The 09s had overhang.I just figured the Marines were a better grade even though my machinist said the Fels would work.They are a nice gasket.Rocky