383 piston L2315F

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383 piston L2315F #373635 07/13/09 12:05 AM 07/13/09 12:05 AM
Joined: Jan 2003 Posts: 1,996 s. e. pa. C calrobb2000 OP top fuel
calrobb2000 OP top fuel C Joined: Jan 2003 Posts: 1,996 s. e. pa.	hi what is the compression ratio listed for this piston ? how does the comp higth compare with a stock say 69 magnum piston ? is there a websight that has this info ? thank you !

Re: 383 piston L2315F [Re: calrobb2000] #373636 07/13/09 01:11 PM 07/13/09 01:11 PM
Joined: Jan 2003 Posts: 74,979 U.S.S.A. JohnRR I Win
JohnRR I Win Joined: Jan 2003 Posts: 74,979 U.S.S.A.	they are SHORTER than the factory 68-69 piston CH is 1.920 , factory is 1.932 which puts it .003 in the hole on a blueprint deck . I don't think it has a compression ratio listed but if it did it would be about 8.5 at .015 in the hole. FYI in case you haven't been paying attention the factory OVERSTATED the compression ratio of the 68-70 , probably them all , at 10.0 compression , the only way to get that is to build to NHRA blueprint if using an open chamber head .

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