347

At this stage I am running a 1" open alloy spacer between carb and rpm air gap.
I know most things in life when it comes to engines are "horses for courses" but I am wondering what you carbed guys are running?
What has worked for you and what has not?

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xc460

CArby spacer size depends dramaticly on what you are currently using else where in the engine. What carby are you running? what cylinder heads are they 2v or 4v ? What Camshaft is it and how much lift and duration intake and exhaust? Also is it a manual or automatic car? Most Clevlands prefer a single plane intake manifold but for starters with an edelbrock rpm air gap i would advise you to start with a 1 inch 4 hole spacer ...

xc460

CArby spacer size depends dramaticly on what you are currently using else where in the engine. What carby are you running? what cylinder heads are they 2v or 4v ? What Camshaft is it and how much lift and duration intake and exhaust? Also is it a manual or automatic car? Most Clevlands prefer a single plane intake manifold but for starters with an edelbrock rpm air gap i would advise you to start with a 1 inch 4 hole spacer ...make sure you use bakerlite or plastic types to prevent heat rising into carb and boiling fuel.

STROKEXD

The Weiand manifolds love a minimum 1inch spacer.

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Neeek

Excuse my ignorance (and the slight thread hijack), but what does a spacer achieve? For example, when I build up my 351 it'll have a standard 4-barrel intake manifold, with something like a 600 vac sec on top. What would the benefit be of shoving a 1" or 2" spacer underneath it? What difference does it make?

brenx

Achieves better windspeed. Also makes the engine think the carb's larger than it really is.

Side affects are flatter torque curve and slight hp improvements.

If a carb spacer works really well? It means your manifold is too small.

Brenden

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dodge

the higher the better so if u can add as much between manifold and carb , make sure ur dont hit the hood with the chrome tin tho, also its better to use a bakelite spacer as heat transfer is another thing u can eliminate.

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GreenMachine

and remember - if you're using a stock intake and a holley, you already have a 1/2 (?) inch spacer in the adaptor anyways

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