07-17-2014, 05:01 PM
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CC Member
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Join Date: Dec 2001
Location: Louisville,
KY
Cobra Make, Engine: I'm Cobra-less!
Posts: 9,417
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Not Ranked
Keith has almost finished up the heads. I don't have a dog in the cylinder head fight, so I get to use anything and everything...LOL
Keith has done a good job with taking a set of Stage 2 Edelbrocks and upgrading them to Stage 3. I shipped him a set of custom Ferrea 5/16" valves and he changed the guides, did the valve job, and did the port work.
Check these numbers out, especially mid lift numbers:
Intake:
.300 - 225
.400 - 281
.500 - 331
.600 - 352
.700 - 361
On the exhaust side, he's getting 264 @ .700".
This was on a 4.250" fixture, on his SF 1020 bench.
These heads flow 30 more cfm at .400" lift than an out of the box Edelbrock flows at .600-.650". 
He's getting me numbers for .750-.800 lift and I will pass that on when I get it. |
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