
Thread: help....thoughts? SBC 400
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10-06-2014 09:23 AM #2
What is the piston part number?
What is the block deck height?
Are you stuck on 64cc heads? Profiler makes an excellent and affordable set of 70cc or 72cc heads that will support 500 hp in your 408.
http://www.profilerperformance.com/r.../sbc-23-degree
Keith Black makes a nice hypereutectic piston that would produce about 10.5:1 SCR with a 72cc head. Most builders will agree that 10.5 is the limit with today's pump gas.
https://www.uempistons.com/index.php...roducts_id=594
I would cut the block deck height to 9.008" (zero deck with the KB pistons shown above, when used with 5.7" rods. Scat 25700P will clear the cam lobes.), then use a Fel-Pro 1014 gasket (0.039" thickness) to set the squish at 0.039". Any aluminum head manufacturer will specify a composition gasket to be used with their heads. The 1014 has pre-flattened fire rings to help prevent brinelling of the heads, as well as having steam holes.
If you are open to this suggestion, I will explain the details of this build for you, along with the proper cam, intake, carb, headers, etc. Are you open to laying out 600 bucks for a retro roller hydraulic cam and roller lifters? Howards makes an excellent product for the price.
If we never hear from you again, you should know that the heads will have to be drilled for steam holes. The manufacturer will drill them for you or you can do it yourself.....
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.Last edited by techinspector1; 10-06-2014 at 09:43 AM.
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