07-24-2012, 11:43 AM
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CC Member
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Join Date: Apr 2009
Location: Little Rock area,
AR
Cobra Make, Engine: ERA Street Roadster #782 with 459 cu in FE KC engine, toploader, 3.31
Posts: 4,533
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Not Ranked
A true CJ motor is a pretty nice motor and yes, the restoration examples I saw at Keith Crafts shop were pulling down about 410 HP stock according to the dyno operator. You might consider a set of Edelbrock heads and just put your original CJ heads away someplace safe. Fairly easy bolt on change.
My heads are 1961 390 HP heads (as in 390/401 HP) that Keith Craft ported and put larger valves in. They are very close to the same as your heads now except for maybe a little additional porting. I asked the dyno operator how much additional HP my engine might have made had I gone with Edelbrock heads and he guesstimated about 30 - 35 HP based on his experience.
Something to consider.
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