Re: 1970-71 427 454 512 4 bolt Short Block
TRW LF2300 is a 10.25:1 w/closed chamber heads. Can't verify the Manleys, but they look to be the same.
Two guys commented that with L2300 .030 & using 104 cc and 109.4 cc heads, their respective compression ratio was 9.60 & 9.40 (estimated).
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69 SS/RS 396 M20 X22 Nor 12B,72B,712 bought 1979
FULL OWNER HISTORY
69 Dick Harrell tribute Day II 427 M20 4.10 X11 76 orig pnt, 711
67 Super Stock 302 Camaro re-creation
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