FBO-Est

Cone Style Carburetor Spacers lead Air Flow directly into the Runners, Helps Control Reversion and Builds More Tork and HP!

• The FBO/ETS Warhead Spacer gives you the performance of a 2" cone spacer but only lifts the carburetor 1/2".

• Most performance engines whether it's for street, strip or both will benefit from a 4-hole spacer.  Hood clearance becomes an issue on most cars unless the hood is relieved.

• By designing our spacer with the cone dropping down into the manifold where the issues really are the effect is more dramatic while still only raising the carb 1/2" off the manifold.

• Idle will smooth out as it directs air from the venturi straight to the intake runner instead of tumbling in the plenum allowing the small molecules of fuel to join back together and form large droplets which increase burn time and reduce tork.

• The depth of the cone helps shear off the reversion pulses and prevents that reversion from going up the venturi reducing the booster signal.  This maintains a smooth constant flow of fresh air and fuel moving through the manifold and scavenging the combustion chamber.

• The depth of the spacer hole themselves increase booster signal strength and activate the main circuits quicker for more low end HP and tork.

For price quote please send e-mail

FBO4H 1/2" Billet Aluminum Spacer Kit

1/2" Billet Spacer, 2 of our Exclusive Lifetime  3/16" Aramid Fiber Gaskets  and Stud Kit (NotShown)

All our Spacers, Gaskets and Hardware are Made In The USA! 

Carb Spacers...One Hole or Open Vs 4 Hole?
The facts are a one hole or open plenum spacer will improve your top end power by adding a larger volume to the manifold.  A 4 hole spacer on the other hand will improve Idle quality, bottom end tork, throttle response and 60' times.

In most applications the benefits of the 4 hole spacer is what we're looking for.  So you've made the decision go with a 4 hole spacer, but there is dozens to choose from, everyone's got a fancy Dyno sheet with all sorts of Voodoo claims and nonsense, here's the facts:
The holes must be the same size as the venturi or you'll tumble the air and defeat the purpose, would you leave a .100 lip in your intake runner?

Billet aluminum is probably the best material to construct a high quality precision machined spacer from.

In most Street Strip Muscle Car applications we have found that about 1" of spacer is all you need.  If you going for the record and want to tweak that last .001 out of your 60' time then experimentation with more spacers will probably get you that little extra, the average enthusiast will be happy with the overall higher performance and low end tork  you'll get from about a 1" 4 hole spacer.

I run a 3"- 4 hole spacer under my Race Demon, 11.62 out of an all iron, all motor, 318CID in a 3100# car.  I started with 2 and ended up with 4 and 5 gaskets, it just kept going faster so kept adding spacers until I ran out of studs

Carburetor Base Gaskets:
A gasket is a gasket is a gasket right?...WRONG!

We've already discussed the advantages of a 4 hole spacer and we know how they improve bottom end tork and idle quality. So why not a gasket cut from the same CnC program to fit the spacer perfectly?

Common sense right? So we did just that, now we have extended the venturi even further, created no disturbance of the air flow and one more very important thing...we have effectively insulated the deadly enemy of fuel.....HEAT

This is not Hocus Pocus presented by some Marketing 101 graduate, it's common Racer sense, keep it cool and keep it flowing

So you've decided to get your new Demon installed, you add the 2 Aramid Fiber Gaskets, a nice billet spacer and your hood closes...Success!

So now you need to get fuel to it, you look down at the greasy old fuel pump and steel line twisted in behind the alternator and realize that something is different and it's not going to be that easy......

We can make your job simple, safe and quick but you need the rest of the parts to make it all work.  Our FBO Dual Feed kits are made right in our shop, we cut the lines assemble the fittings and make sure that everything will work.  We use nothing but Precision Fittings, and Parker Hose all  Made in the USA.  All our assemblies are built from AN style re-usable fittings, S.Happens and when it does you'll be able to simply replace the damaged component and your done.  
With cheap swaged hose ends, when you damage a component and you will, you'll need to replace the entire dual feed kit.    In the long run your way better off with quality.  Remember, fuel burns, it's attached to your pride and joy, if leaks your going to have a fire and a big one, this is no place to go cheap.

So now you need to get the fuel from that pump up to your new Demon.  We custom build fuel delivery lines with or without  our  billet aluminum filters.  Most Mopar and Chevy's will take our standard F14 kit with filter and hose coupler, they come with the adapter fitting to convert the stock inverted flare to the AN connection, screw it in, connect your line kit and your ready to fire it off.

 Correct fuel line plumbing