Info for TRW L2278 .030 Piston
ARussell,
I looked through my stuff and here's the info that I have.
The is a Forged Aluminum Piston for a 364 SBC 4.030 x 3.562
Comp Dist 1.52
Dome height .193
Comp Ratio 12.5 w/ 64cc heads
Effective Dome Volume 9.6 cc
Weight 575 grams with no rings and no pin
I hope this info helps.
Thanks again, Geo