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MI2600 10-11-2002 07:41 PM

TRW 327 Pistons
I've got a set of forged TRW pistons for a 327 SBC. The TRW # is L2165. When I bought them I was told they were 9:1 with 64cc heads. I was going through a reference book (always accurate right!) and they were listed as 10:1. Anybody know a site with with specs...or even have personal knowledge about these?

bullheimer 10-11-2002 07:51 PM

could be. i know that flat tops are 9.2+ to 1 ona 350 with 76cc heads.76cc <img src="graemlins/crash.gif" border="0" alt="[crash]" />

johnsongrass1 10-12-2002 05:02 PM

The only sure way to know is take measurements and do the mth

72trucker 10-13-2002 06:18 PM

I have a 327 bored .060 over with flat-top trw cast pistons and 64cc heads. Lots of static compresion. Ratio is about 9.6-10:1 and I did the math (the 9.6-10 range is for any minor miscalculation). SO, the compression is up there for pump fuel, which is what I use. I had a hard time with detonation/pre-ignition. I had to richen the a/f ratio and go with colder spark plugs. Good Luck....

agearhead 10-13-2002 08:12 PM

8.96 with 4" bore 9.03 with +.020 9.07 with +.030 9.11 with +.040 9.18 with +.060

Biggarmike 10-14-2002 06:14 AM

L2165 are flat top? I built a 327 last year with L2166, they were .100" dome. Too much for pump gas with 64cc heads. Yours should be close, but ok.

[ October 14, 2002: Message edited by: Biggarmike ]</p>

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