I'm rebuilding the '65 350
12-11-2008, 10:31 AM
#41
Race Director
12-11-2008, 10:34 AM
#42
Le Mans Master
Member Since: Mar 2005
Location: Rocklin California
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kensmith, the dokk says you are really nice guy, so no disrepspect-nor to you astrodokk. i ran the numbers on his CR for a 350. the heads he bought have 64 CC chambers, the numbers on a CR calculator came in at just below 10-1. (the same heads i bought off e-bay)
now the dokk is going to a 383 stroker, this changes the CR.
my engine is a 383 stroker, according to the specs-383 CI, 64 CC heads, an .039 head gasket, pistons .015 down in the hole-this works out to 10.71 on my engine. i will modify the cambers to bring it down to 10.5 or 10.3 (still thinking about that). it's like 2 or 4 CCs out of the combustion chamber.i recomended that dokk go with dished pistons to keep the compression on the safe side--but asstrodokk, this will kill your quinch. the dished piston i showed you will not have as much cuinch. the flat tops would be much better for quinch, go with fat tops and modify your chambers.
now the dokk is going to a 383 stroker, this changes the CR.
my engine is a 383 stroker, according to the specs-383 CI, 64 CC heads, an .039 head gasket, pistons .015 down in the hole-this works out to 10.71 on my engine. i will modify the cambers to bring it down to 10.5 or 10.3 (still thinking about that). it's like 2 or 4 CCs out of the combustion chamber.i recomended that dokk go with dished pistons to keep the compression on the safe side--but asstrodokk, this will kill your quinch. the dished piston i showed you will not have as much cuinch. the flat tops would be much better for quinch, go with fat tops and modify your chambers.
Also, shim or head gasket thickness, milling, etc all contribute to compression. I am running a 350 motor in my 65, LT1 heads, dome pistons, on 91 octane pump gas. No ping.
12-14-2008, 03:11 PM
#43
Burning Brakes
Thread Starter
Update on cam
We've finally narrowed down the cam decision to the Comp Cams Thumper series 235/249 duration @ .521/.507 lift. The heads are good to .600 lift. We talked about this one the most because it's a retro fit hydraulic roller that maximizes that loby sound (like Dave's there), yet doesn't compromise on the vacuum, power, driveability, but increases torque and horsepower. The range is 2200-5900. It'd be nice to get the same performance out of a cam from 1800-6700! I haven't found any. Thanks to all for your participation in this build.
12-15-2008, 12:20 PM
#44
Team Owner
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Location: Washington Michigan
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