OH oh,.....CORRECTION THERE DICK:
MY 327 HAS .120 DOMED PISTONS (1/8")
(the old so-called 350hp-327 piston from 1966-67 engines)
-remember them boys?
-AND you forgot to mention my head cc's there Dick!
I know it's late and we're getting tired LOL!
ANYWAY, MY heads, (old early 461 castings with 1.94 intake valves)
...IF I remember correctly, cc'd at 68 when I did them.
my pistons TDC at, I think (!) .035 - .040 below deck (not counting the dome
of course ) giving about .070 theoretical clearance between head and piston
when operating ( keep in mind now, this is all from memory of an engine
built 6 years ago fellas, so take it easy on me will ya? )
DICK stated below: "He is looking at some 55CC heads. My guess was 12:1.
He doesn't think it would be over 10:1.
What is that going to do to his CR ? "
What I said to Dick over the phone was that I did'nt think 55cc heads with
FLAT pistons in a 350 would go past 10:1 -NOT refering to my motor with
the pop-ups.... -just to clarify things a bit.
We were just hashing out imaginary numbers ....daydreamin' AGAIN
But what IS the formula fellas? I ferget.
-Bet'cha Mayf can tell us!
Thanks, Doug A. latenite,we gone
==================================================
From: Dick J <lsr_man@yahoo.com>
Reply-To: Dick J <lsr_man@yahoo.com>
To: drmayf@teknett.com, land-speed@autox.team.net, Flowbench@aol.com,
saltracer@awwwsome.com
Subject: Compression Ratio
Date: Wed, 20 Jun 2001 20:16:58 -0700 (PDT)
My second question for the day: "How do you figure compression ratio?"
I've got a 4.010 X 3.480 350 Chev with flat tops and 72CC chambers. I was
told this should yield about 9.1:1 CR.
Doug Anderson has a 4.040 X 3.250 327 with .010 domed pistons. I think we
figured about 9.8:1 on his motor.
He is looking at some 55CC heads. My guess was 12:1. He doesn't think it
would be over 10:1. What is that going to do to his CR?
What will I end up with if I put on a set of 64CC heads?
=====
Dick J
In East Texas
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