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Old 07-27-2011, 02:00 AM   #61
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Default Re: dual plane vs single plane

carb is a 950 hp, not 950 hosses!
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Old 07-27-2011, 09:12 AM   #62
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Default Re: dual plane vs single plane

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Originally Posted by Bob Deniker View Post
I ran high 9s 15 years ago with a LS 7 style 468 at 3300 lbs with one. They work well in the right application.
That is impressive. I thought it might give back some torque to those big heads.
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Old 07-27-2011, 11:38 PM   #63
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Default Re: dual plane vs single plane

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Originally Posted by youngengines View Post
That is impressive. I thought it might give back some torque to those big heads.
That was with ported gm aluminum heads. I changed it to a 454r because people told me i would pick up et. It picked up rpm but no et. It worked for me.
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Old 07-28-2011, 12:15 AM   #64
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Default Re: dual plane vs single plane

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Originally Posted by 482nova View Post
i have a 482 ci bbc. 10.3 comp,ported 781 oval ports,ported RPM intake,256/266-579/605 comp solid cam.quick fuel 850 and msd. shift about 6000 and trap at about 6200/6300. I never had this motor dyno'd to find 'exact' max rpm. my question is would a victor jr or other single plane help at this rpm/hp range ? My guess is about 550 hp. apx 4000/4100 stall and 4-10 gear with a 400 turbo. THANKS again for all the help.
FWIW,

My Engine Masters 409" Windsor from 2004:

The sheets got lost on the comparison so I did one by hand years ago..........



Not sure of the size of runners on a BBC Air Gap. Area under the curve the air gap wins, but what does your engine fall off ( rpm) on shifts?


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Last edited by G-Code; 07-28-2011 at 12:19 AM.
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Old 07-28-2011, 12:28 AM   #65
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Default Re: dual plane vs single plane

http://www.gethoned.com/parts.php?ge...how=automotive

I know of only one guy who used an extrude honed air gap... 408" Ford it kicked ass for him. On the dyno it ran with a Vic Jr to 6,000 but the lower trq numbers kicked the single planes ass.

Just a thought.

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Old 07-29-2011, 10:51 AM   #66
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Default Re: dual plane vs single plane

I'd still like to know what the shift recovery is on this engine? What's the rpm fall-off between shifts?

If the BBC intakes mirror the graphs I posted, what intake would work best for this guy?

The RPM certainly for 95% of the time he's not at the drag strip, I'd think......


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Old 07-29-2011, 06:19 PM   #67
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Default Re: dual plane vs single plane

A friend of mine has a pump gas 496 with ported iron rectangle port heads, etc. He runs an Eddy Performer RPM!! Also has a ZEX plate on it, sprays a 200 shot.

The engine is in an 83 GMC single wheel one ton, he's gone 11.80's on spray!!! It's an awesome street ride, suprises a lot of people, I don't think the manifold is hurting it too much.
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