Originally Posted By ric3xrt
BGE heads are small chamber
My actual compression is 9.7 to 1 the pistons I used were a set of probe pistons for 4.09 bore 6.1 with a 4.05 stroke. We had to modify them by milling .018 off the top because I used a 4.08 stroke scat crank and 6.125 Manley H-beam rods


Most piston mfg will allow 2 changes to a shelf piston for shelf piston price

Gen 3 power 6.22@110, 9.85@135
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