i need a little 340 help. Lets Talk head gaskets
First picture pistons are 11.8-1 I ran this motor on C14 at the track . Pump gas mixed on the street. second two pictures are pistons 13.95-1. The compression ratio is determined with the combination of parts not just the piston. That 11.8 piston is zero deck height. as is the 13.95 piston.
These numbers were calculated with 4.080 bore and a 4 inch stroke .63 cc head volume , 4.20 dome volume .035 head gaskets, Cubic inch is 418 ratio comes to 13.95-1.
First picture pistons are 11.8-1 I ran this motor on C14 at the track . Pump gas mixed on the street. second two pictures are pistons 13.95-1. The compression ratio is determined with the combination of parts not just the piston. That 11.8 piston is zero deck height. as is the 13.95 piston.
These numbers were calculated with 4.080 bore and a 4 inch stroke .63 cc head volume , 4.20 dome volume .035 head gaskets, Cubic inch is 418 ratio comes to 13.95-1.