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[Z06] RHS 291 Heads

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Old 03-06-2014, 08:49 AM
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blackc6z
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Default RHS 291 Heads
Anyone running RHS 291 Runner heads on a NA high compression build. I'm planning to order a set because my stock ported and milled LS7 heads have guide wear. I'm running 12.2:1 compression now and making 600+ rwhp now. My question is, would I gain anything with these heads compared to my modified stockers.
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Old 03-06-2014, 09:32 AM
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double06
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Do you know what your ported stock ones do in CFM flow? Then compare with RHS ones. I think Frankenstein heads specialize in the RHS ones. That might help to see what differences there are.
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Old 03-06-2014, 10:12 PM
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blackc6z
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Originally Posted by double06
Do you know what your ported stock ones do in CFM flow? Then compare with RHS ones. I think Frankenstein heads specialize in the RHS ones. That might help to see what differences there are.

thanks, I sent a pm to Frankenstein Racing Heads
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Old 03-06-2014, 10:20 PM
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vertC6
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Did you have bronze guides installed or just milled and porting?
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Old 03-06-2014, 10:52 PM
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Originally Posted by vertC6
Did you have bronze guides installed or just milled and porting?

http://forums.corvetteforum.com/c6-z...post1585631063

Originally Posted by blackc6z
I used the stock heads with the stock guides for my build because guides checked out good.
http://forums.corvetteforum.com/c6-z...post1585630984
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Old 03-07-2014, 10:36 AM
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vertC6
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That was 3 months ago, now there bad?
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Old 03-07-2014, 11:23 AM
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Originally Posted by vertC6
Did you have bronze guides installed or just milled and porting?
Factory guides, and I have 15000 miles on build, guides where fine when they were pulled to be milled at 15000 miles so I didnt change them.
Last edited by blackc6z; 03-07-2014 at 11:26 AM.
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Old 03-07-2014, 11:26 AM
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Originally Posted by vertC6
That was 3 months ago, now there bad?
2 years on build , just check wear on valves
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