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I don't necessarily trust that engine calculator. Flat tops with four valve reliefs are usually around -5cc's. In fact, CFM refers to the maximum Cubic Feet per Minute of air/fuel mixture that a carburetor will flow. (Carter calls it 625, Edelbrock says 650 same carb). The Answer No, the usual size on a stock engine like that is the 625-650 carburetor. Usually the low compression engines have dished pistons that would yeild lower compression. Edelbrock AFB Carburetor -Uses Rebuild Kit CK294. *notes: I've never heard of -7cc pistons.
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If you were to go with Vortec heads, either get the ones that have been upgraded to allow for additional lift, or be very careful not to exceed the max for those heads. We followed up this year with a new 800cfm AVS2 that provides optimum performance for high-horsepower applications on both small- and big-block engine applications.
#BIG CAM 350 EDELBROCK SERIES#
With the iron Vortec heads' chamber design, you may be able to, as well. The AVS2 Series four-barrel is Edelbrock’s latest generation of performance carburetor that was first introduced at the 2017 SEMA Show in 500cfm and 650cfm versions for small cubic-inch and dual-quad applications. Then I changed the combustion chamber cc's to 64 to see what a head swap would do to your compression, It was 9.6:1.ĩ.6:1 Aluminum heads, you will still be able to run 87 octane. Gasket thickness (including deck height)=. Street/strip, needs 9.5:1 compression, 2800+ stall, intake, gears and headers, very rough idle. I used a calculator I found online with a google search, and typed in numbers until I got a 350 with 8.5:1 compression. Big Mutha Thumpr 243/257 Hydraulic Roller Cam for OE Roller SBC 305-350.