Will a dominator carb kill my performance? HELP - Hot Rod Forum : Hotrodders Bulletin Board
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Old 01-19-2003, 12:31 PM
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Post Will a dominator carb kill my performance? HELP

Hi everyone I'm finally building my engine a 496 cu stroker engine.

All forged rotating assembly with H-beam rods.(Scat)(BALANCED ALSO)
Domed forged pistons 10.5.1 compression (SRP)
454 2-bolt block, bored .060 over
Merlin VR iron heads 119 chambers, 310 runners, 2.30/1.88 valves, with 1.7 roller rockers
Lunati roller cam 260/268 @.050 duration with a .639 lift,114 LOBE
Merlin single plane intake(3000-8500)

Now I need your help my combo recommends a holley 870 cfm street avenger carb. But my buddy is trying to talk me into buying a 1050 dominator <img src="graemlins/sweat.gif" border="0" alt="[sweat]" /> I think it maybe too much though. It won't be a daily driver but some what streetable. And second question is will a manual fuel pump supply enough fuel for this beast if so what PSI RATING would you recommend??? I'm trying to get 650 horsepower with no NOS <img src="graemlins/pimp.gif" border="0" alt="[pimp]" />

[ January 19, 2003: Message edited by: ss crazy ]</p>

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Old 01-19-2003, 12:53 PM
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Too much carb may make it sluggish when you get on it, Plus it doesn't give you optimum milage (if you care)
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Old 01-19-2003, 01:54 PM
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I don't feel like a 1050 Dominator is overkill on your proposed combination. Just be certain that you tune the carb to your combination. Your going to have massive breathing potential, and you've got almost 500 cubes with a roller cam, be certain to use the proper gearing, and transmission choice, you'll be okay. For top end performance, you'll make better numbers with the Dominator.
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Old 01-19-2003, 02:04 PM
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NAIRB as far as trans and gear I'm a TH400 with a TCI 4000 stall with a ford nine inch ,detroit locker and 3.70 gears. I hoping for low 11's but would love a high 10 second streetable hot rod.
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Old 01-19-2003, 04:43 PM
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SS, you might think about one of Barry Grant's high flowing demon carburetors, you might just split the difference and go with something that flows around 950 CFM. I think you'll be happy with how they perform.
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Old 01-19-2003, 05:35 PM
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yes you have the engine for it, back in the seventies i had a mega-cube big block on the street, with lots of cam, big tube headers,4.56 gears, stick, etc. the "experts" at the time all said go 850, but i got a real deal on a 1050 dominator, the smallest one with the non annular discharge. This was a fantastic carb on the street! the idle circuit was big enuff for the wild cam, the thing got the best gas milage it ever got (didn't really care at the time) was easier on plugs, and was an all around killer carb for the combination.A top end charge second only to the Hemi cars! If only the cam profile haden't been a spring eater this thing would have been bullit proof.
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Old 01-20-2003, 08:04 AM
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Hey BOB so what do you think about using a mechanical fuel pump? Or should I just buy a electric with regulator. If anyone else has suggestions please post them. So can someone tell me how much horsepower to expect from this engine. I'm expecting around 650 hp hopefully!!
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Old 01-20-2003, 08:21 AM
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Skip the Mechanical pump!
Id go with at least the Holley blue, but may lean twords a Mallory race type with your combo. HG
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Old 01-20-2003, 04:50 PM
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yes go with at least a Holley blue with regulator, i used to run two at the tank with 1/2" aluminum line to the engine then regulate just before the carb, set at about 7 lbs. you are going to have a very good shot at 650 hp. have fun.
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