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Old 12-14-2006, 07:37 PM
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carb spacer?

I've got a dual plane holley street dominator intake and a 750 Carter AFB carb on a mild 10:1 388 stroker with a comp 280H cam.....i want my carb to sit a little higher for show purposes........would a 4 hole 2 in thick spacer help or hurt me? thanks

OHH and it's mainly driven on the street so low end is a must.....

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Old 12-14-2006, 07:57 PM
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That almost always kills torque! All show and no go is for rice.
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Old 12-14-2006, 08:24 PM
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hhhmm a 10:1 383 with a nice cam wouldn't make low end torque????
it wouldnt help but you prolly have good low end torque now
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Old 12-15-2006, 02:40 AM
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Suck it and see. A street dominator has a small plenumn so as long as you use a 4 hole instead of an open spacer you might be ok.
Spacers can be used as a tuning tool - if you have a small plenumn and a small carb then a spacer may help. Large carb and intake - a spacer will kill it. Try the spacer, if it gets doggy then borrow a 600cfm vac sec anything and try it. If the 600 improves it then throw the spacer into the fishing boat.
Generally a large manifold with a small carb will give simmilar drivability to a small manifold with a large carb, but the details will kill you - short/long stroke, short/long rod, high/low comp. Light car/heavy car, converter/gears/tyre height.It's all trial and error, you can use a computor programme but like most things it's only as good as the person who wrote it. Use the big black dyno.
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Old 12-15-2006, 09:03 AM
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I would get a "super sucker" 4 hole spacer, these are said to help power.
I wouldn`t think a 4 hole spacer is going to hurt, I think it`ll help low end due to the higher velocity.
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Old 12-15-2006, 09:28 AM
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Quote:
Originally Posted by kuhn-77
I've got a dual plane holley street dominator intake and a 750 Carter AFB carb on a mild 10:1 388 stroker with a comp 280H cam.....i want my carb to sit a little higher for show purposes........would a 4 hole 2 in thick spacer help or hurt me? thanks

OHH and it's mainly driven on the street so low end is a must.....
I wouldn't hesitate to use a 4-holer. I doubt you'll see any difference one way or the other. Is your HSD intake the single plane version or the dual plane one?

Trans-dapt makes a trick 4-holer for about $35, or you can get a generic aluminum one for about $18 from Summit. Cheap at half the price...

http://store.summitracing.com/partde...5&autoview=sku
http://store.summitracing.com/partde...5&autoview=sku
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