Big block chevy oval port intake and carb reccomendation

General engine tech -- Drag Racing to Circle Track

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Big block chevy oval port intake and carb reccomendation

Postby jobes » Sat Nov 15, 2008 4:07 pm

Engine is 4.31 bore with 4.0 inch stroke,Ultradyne roller 270-280 108 lobe separation.12.5 compression,6.135 rod.Using 049 iron oval ports with 2.19-1.72 valves.DRAG RACE only,What would be a good intake and carb to run.Thanks for inputs

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Alan Roehrich
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Postby Alan Roehrich » Sat Nov 15, 2008 5:14 pm

A Holley 300-5 intake and probably a Quick Fuel 950 4150 style carb, with a 1" super sucker style spacer between them. At least that'd be a good place to start.

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Postby Abbottracingheads » Sat Nov 15, 2008 7:21 pm

The Edelbrock Victor oval port and 1050 Dominator will out run the rest.
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Postby m.maxwell » Mon Nov 17, 2008 12:22 am

I'd run a Dart any day but it does require extensive porting. A 4150 would likely be adequate for your dispacement. Dart make's both oval port manifolds for either a Dominator or a 4150 but they would both require porting.
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Postby DOTracer » Tue Nov 18, 2008 8:04 am

Edelbrock Victor jr intake and a 1000HP 4150 Holley. Dominator wasn't worth anything on my old 461ci combination, plus the low speed drivability was poor with the dominator.

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