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Old 05-18-2014, 08:20 AM
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601 vs. 186 heads

I have a 283 with a 0.50 cam, 1.5 rockers, stock, and 601 heads with 1.85 intake valves.
Thinking of getting 186 heads, to stay "old style".
I want an engine that runs well, and can get out of its own way if needed.

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Old 05-18-2014, 08:32 AM
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You're gonna lose compression by using the 186 heads.They will have 62 to 67cc chambers vs the 58cc of the 601's.The 186's will have larger valves,runners,etc & flow better,but with a 283,it prolly won't help you.It may even cost you some low end torque.The 601 is a decent head if ported.It should still have perimeter bolt valve covers as well for the old school look as IIRC,it is a pre 87 head.
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Old 05-18-2014, 09:14 AM
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Why is this in the "Body" forum?

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