Carb Spacer ?

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Johnny Dart

Johnny Dart

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4 hole or open carb spacer ? Which one is better & why ?

Set up: Street avenger, Edelbrock RPM intake.
 
Since the question is very general.

4 hole. It keeps the velocity up, the open hole spacer can sometimes create to much plenum for the givin combo and a loss power is the result.
 
Put a tunnel ram on it you wimp! :toothy10:

Dual plane, I tend to go for the 4 hole spacers, UNLESS, max HP is your goal.
 
Did a little research. Open spacer top end, 4 hole low end torque. Just like a intake,go figure....:yawinkle:
 
I'm just was curious about this and I need to know if my thinking is way off. I have a dual plane performer,open spacer and a Holley 750 HP DP but the carb size is really not needed here. My thinking is that with the open spacer that the carb signal won't be so divided and the fuel will go to where it is needed the most to each cylinder. I was running a Eddy carb at the time smack down on the manifold. I had heat problems involving the carb so I bought a spacer and that fixed the heat issue. So now I'm curious because the carb I have now (the Holley) has a 4 corner idle mixture and thinking that the 4 hole spacer would make each idle screw respond better. Hope you understand what I'm asking. The 360 I built is a torque monster with 302 swirl port heads that has the valves back cut. The heads flow at 204 at .500 intake and 128 at .500 exhaust. 474/474 Mopar purple shaft and 10.7 compression. I have no trouble smoking the tires and it car takes off like a scalded chicken. I mean I guess I could just buy a 4 hole spacer and find the results but just wondering what you guys think.

Would I benefit going with a 4 hole?
 
you might, but on the street it might be hard to tell... i have a spacer i would be willing to part with when my other spacer comes in later this week PM me
 
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