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ss3011 · 09-09-2024, 05:00 PM

Sounds like you have some Super Stock pistons. The real answer is the ring grooves

should probably be 5/64, 5/64 , and oil groove 3/16 .

09-09-2024, 05:00 PM	#2
ss3011 Senior Member Join Date: Feb 2002 Location: Southeast Michigan Posts: 909 Likes: 70 Liked 239 Times in 114 Posts	Re: 402/375 pistons Sounds like you have some Super Stock pistons. The real answer is the ring grooves should probably be 5/64, 5/64 , and oil groove 3/16 .