1978 Oldsmobile Omega

So I know a bit about the use of spacers but I would like to learn a whole lot more, if someone could get some info and when to use one I would like to know.
I have an OL4B intake that I will use and an edelbrock 750 that I got dirt cheap in great condition, my manchinist said I may want a spacer but who knows yet. I know that sometimes they are good and sometimes bad. It is a low rise intake. And for the ones who ask about HEI, there should be no issue using a space saver HEI like the ones offered by Mallory. Although on a O4B intake for the big block... Probably won't work.

1978 Oldsmobile Omega

.... Little blurry....

rjohnson442

Open spacers will give you more top end power but you'll sacrifice off the line power and vise-versa for barreled spacers. Really you'll have to trial and error to see what one fits your motor best. Another advantage to a spacer is it can help cool the fuel in the carb. Someone sells a spacer kit that you can swap out the center for different bores and spreads and tapers. basically a 1" open bore with a few different pieces that fit the center of it.

Lars

Most people will say use one ONLY if you have to. They seem to disrupt flow and lessen signal. Not sure if your edel is square bore or not, or if it'll mate to the o4b spread bore intake.

1978 Oldsmobile Omega

So really it is a bit of a guess and check? I'm not quite sure how exactly to *pick the perfect spacer* I know often people say not to use them if you can help it.

rjohnson442

http://www.summitracing.com/parts/mr...FSyCMgodkScAaw
thats the link to one that I was kinda talking about. there are others out there as well that have more adapters to "tune" with also. Do a few runs around the block to see which one will suit you the best.

olds 307 and 403

Edelbrock carbs have known heat soak issues. Get a 1 or 2" 4 hole phenolic spacer.

1978 Oldsmobile Omega

I would hate to ask a stupid question... But my 750 Edelbrock lines up with a spacer I got at a flea market for a chevy (never know when you need it) and the carb lines up with my OL4B... But the spacer does not like up with the OL4B, so will this spacer kit line up with my intake, if so it's a pretty reasonable kit.

olds 307 and 403

Yes, it needs that adapter.