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I was running a 750dp last year on my 351c 4v closed chamber head motor and ran a best of [email protected] I tried a brand new holley 1000HP carb and ran a best of [email protected] Checked the plugs and they seemed to be dry and clean. Whats the deal? I figured if the 1000cfm carb was too much the plugs would foul. Is it possible with the larger bores on the 1000 that the signal was reduced therefore causing the lack of power? The et was down .5 as well as 5mph. 60fts were close with both but the 750 was better.
Any input appreciated.
 

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I'm not one to say what the problem is, but I would guess at too much carb for the motor, like my quote says...

By the way I would like to know what your combo is that got you a 12.37?
 

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I think the 1000 is a bit much for a 12 sec car. I run the 950HP on my 383W. In my 69 Mustang it runs 6.80's in the 1/8 (10.70's 1/4). Last year I had a 750 dp. Put the 950 HP on and picked up a tenth. 60 ft stayed the same. MPH went up by 1.0-1.1

BTW, the 950 doesn't really flow 950. It's a 750 main body with an 850 base plate. The smaller venturi's keep the velocity up. It flows in the 840-850 cfm range. If I was to guess, the 1000HP is simple an 850 body on an 850 baseplate. Prob flows 900-925.
 
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