HELP: which head gasket for a 423 big N20 motor
06-21-2004, 01:45 PM
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HELP: which head gasket for a 423 big N20 motor Well trying to wrap up my parts buying and now I cant decide which gaskets to get. Ive got a 423 iron block 4.040 bore 4.125 stroke. I was told to get a gasket that is 4.070 and .40 thick. where can I get this and what is the best. Ive read alot under the search que but theres alot of going back and forth on there. I see alot of issues with the cosmetic ones ( thats what I was leaning towards) but what else is out there that I can get those measurements. Ill be spraying around 300 on the motor. any info would be greatly appreciated.
06-22-2004, 11:31 AM
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i use a 4.10 bore .040 thick cometic on my 414 (4.06 bore 4.0 stroke)and they work perfect.make sure the piston does not come out of the bore because with a .040 gasket and slightly more piston to wall and end gap on the rings for NOS the piston comes close to the head.
