B1-MC
#1654407
08/03/14 12:28 PM
08/03/14 12:28 PM
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Joined: Feb 2004
Posts: 3,441 Mo.
supercomp
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Mo.
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How much lift can you get with B1-MC heads before needing longer valves when using spring cups? I was told they quit making power at .825 lift. True or not. My programs disagree.
Thanks
Last edited by supercomp; 08/04/14 11:56 AM.
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Re: B1-MC
[Re: Airwoofer]
#1654411
08/04/14 12:46 PM
08/04/14 12:46 PM
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Joined: Feb 2004
Posts: 3,441 Mo.
supercomp
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Quote:
The ones on the 499 are around .900 lift on both sides with 1.7 rockers. They didn't run out until well into the 8000's, if not more. I've seen 9300 and maybe more by mistake.
I don't know if these are MC, PSO, or what. I will try to get some clarification from Adger Smith when the heads get back to him to be freshened up. He built them originally when he built the engine for the Hardesty's.
This will be a 604 with 1.75 in 1.7 ex 55mm roller cam.
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Re: B1-MC
[Re: Al_Alguire]
#1654415
08/09/14 01:55 PM
08/09/14 01:55 PM
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Joined: Feb 2004
Posts: 3,441 Mo.
supercomp
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Thanks Al Who done your heads.
Last edited by supercomp; 08/09/14 02:00 PM.
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Re: B1-MC
[Re: supercomp]
#1654416
08/09/14 02:29 PM
08/09/14 02:29 PM
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Joined: Jun 2003
Posts: 52,972 Romeo MI
MR_P_BODY
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My M/Cs were suppose to flow 465 according to Modern Cyl Head which did the port work.. I never flowed them on another bench to verify the numbers(that was the standard port design)
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Re: B1-MC
[Re: Al_Alguire]
#1654418
08/09/14 03:29 PM
08/09/14 03:29 PM
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Joined: Nov 2004
Posts: 6,890 North Alabama
Monte_Smith
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Quote:
The heads were ported by Mike Duke.
He is a REAL cylinder head guy. Understands there is more to it than make it BIG.
Monte
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Re: B1-MC
[Re: Al_Alguire]
#1654422
08/10/14 10:54 AM
08/10/14 10:54 AM
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Joined: Feb 2004
Posts: 3,441 Mo.
supercomp
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Quote:
Mine were pulling fine past .900" lift. Peak was 457cfm on the few flow benches they were on. But mine were also an oval port design. Not the conventional, and what I generally see giant rectangle design everyone seems to love. Old school thinking IMO.
What do you do for an intake? How do I get in touch with Mike Duke?
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Re: B1-MC
[Re: MR_P_BODY]
#1654426
08/11/14 11:09 AM
08/11/14 11:09 AM
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Joined: Jan 2003
Posts: 970 Farmington Hills, Mich
Chuck@Best_Machine
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Farmington Hills, Mich
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Quote:
My M/Cs were suppose to flow 465 according to Modern Cyl Head which did the port work.. I never flowed them on another bench to verify the numbers(that was the standard port design)
Here you go Mike, I found this for you
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