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12-06-2006 03:44 PM #1
CHR Member
- Join Date
- Nov 2006
- Location
- missoula
- Posts
- 120
c/r help
what compression would i have with a set of Part# L2465F forged .200 dome .030 over
30 over
781 heads (stock except for polish)
power plus cyclone manifold
holley 3310(proform main body)
th400 3.73's
78 camaro 3600lbs.
stock deck height
street driven
full length headers 1 3/4in. primaries 3 in. collector
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12-07-2006 05:23 PM #2
CHR Member
- Join Date
- May 2006
- Location
- Regina canada
- Car Year, Make, Model: 1977 camaro
- Posts
- 65
I worked it out to be close to 10.0-1 thats with a .040 thick head gasket, and a .016 deck height. I think the 781 heads have a 118 CC chamber. I based this on a 454 too?9.65 @ 137 MPH 1.39 60' More left in the car.
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12-07-2006 07:48 PM #3
CHR Member
- Join Date
- Dec 2004
- Location
- Hagaman
- Car Year, Make, Model: 71 Chevelle SS, 67 Camaro
- Posts
- 404
I'll bet closer to 9.5, maybe a little less. Dont forget, stock deck hgt. Those are supposed to be at about 10.6/1 with 0 deck and 107cc chamber.When your dreams turn to dust, Vacuum!
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You're welcome Mike, glad it worked out for you. Roger, it's taken a few years but my inventory of excess parts has shrunk a fair bit from 1 1/2 garage stalls to about an eight by eight space. ...
1968 Plymouth Valiant 1st Gen HEMI