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Old 11-19-2017, 04:13 PM   #1
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Default So, looking for combo advice probably bad

I got Cap42's 383 and am debating pulling the heads and porting them. I suspect HP will be in the 400 range with what's there now. This is what I know about the combo as it is:

-276HR cam 224/[email protected], .502/.510 lift 110 LSA
-Holley Stealth Ram
-1 5/8 LT headers
-Going to be 2.5" full exhaust maybe no mufflers
-Stock World S/R heads with what appear to be aftermarket valves (2.02/1.60)
-1.5 ratio Comp Roller Rockers
-dish pistons, estimating around 9.6:1 CR and that's quite possibly optimistic without pulling stuff apart to measure.

I've seen flow numbers on these at 200 to 225 or so at .5 lift. I think the variance is tolerances on flow benches and possibly valves/valve jobs. I'm pretty sure I can pick up 20hp and 200 RPM pretty easily with a bowl job on these heads and some work on the exhaust, probably 15 hours or less into them plus another say 10 to put em back on, lash the valvetrain etc. I already have the tools, so that's a non-expense. All I'd be into cost wise is head gaskets. As it stands now I expect this setup to be pretty well done at 5K or less, and making peak torque near 3K.

Does TCG think port or not port the heads? I'm just trying to make my mind up and am wishy washy on it.
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