FBO Systems - Don Gould - Demon Carburetor
 

Recently, I had the pleasure to do business with Don Gould who is the proprietor of FBO systems. FBO specializes in Barry Grant's Demon Carburetors among many other products.

Don was very helpful by working with me on a suitable configuration and replacement for my 13 year old Holley 850 double pumper on my 428 FE.

Don took all of my engines specs (Cam, heads, intake, feet above sea level, etc) and suggested the "correct" Mighty Demon for my application. Being fully versed in Cobra replicas, he was aware of my turkey pan cold air box arrangement, and provided the correct gaskets and AN fuel line couplings (I provided him a digital picture of my current plumbing to assist).

Once I ordered the Mighty Demon, Don performed his magic by inspecting the carb via a tear down, bench flow testing it and adjusting the carb to my engine's specs. I purchased Don's optional telephone support which would allow me to get him involved on the phone should I need assistance with the installation or fine tuning.

Within one week the Demon arrived. Installation was fairly straight forward with only one glitch. A minor 1/32" adjustment to the turkey pan needed to be made to allow linkage clearance.
The AN fittings supplied were a perfect fit.

The Mighty Demon 750 has three minor differences from the Holley. First is that the center post is 5/16" which is a bit larger than the Holley center post. The center post holds the air cleaner on.

Second difference is that the Demon takes different fuel line fittings than the Holley... Don provided these.

The third difference is that the Mighty Demon has TWO idle speed adjustment screws, one on each side of the carb whereas the Holley had just one.

To sum up, the carb is beautiful and frankly makes my engine feel totally different and much more responsive. I am still fine tuning the idle speed.

I highly recommend FBO and Don Gould and the Mighty Demon double pumper.

FBO is at www.4secondsflat.com

Cheers..

I second that...
 

The man is first class.

I bought a Demon for my 302; had some issues getting it lean at idle yet rich enough at WOT. Calls to BG Tech line had them dismissive of my questions - all they wanted to do was tell me "drill out the airbleeds." In my Speed Demon those bleeds are not replaceable - meaning you do this and there's no going back.

Found Don on this forum about a year ago, offering his help. Went back and forth about 3 times, doing as he suggested - bottom line, the car idles PERFECTLY (no smoke, no stink), no stumbles/hesitations anywhere, pulls like a Clydesdale from 2500 to 6200, gets 18+ mpg, and the plugs read perfect light brown.

All this - no charge. Perfect advise, with perfect results. The man is FIRST CLASS.

I called Don about my 302 idle problems and to my surprise he was the one that answered the phone and spent plenty of time asking/answering my FNG questions.

I sent in some engine info and he promptly responded by email and I switched from a Road Demon to his recommended Speed Demon.

A few weeks later I called and I'll be damned, he answered the phone, remembered our conversations from a few weeks before, and answered all my questions and gave me some time for an in-service on carb tuning.

Not to shabby for a Mopar guy. ;)

I agree, First Class all the way.

-John

I bought my Mighty Demon from Don....I agree also, a First Class Guy.

Ditto. Don set up my Mighty Demon perfectly, and it made a world of difference.......great guy, great service
BigMike

I didn't get a carb from him, but I did get a distributor from him with the proper timing curve, checked for phase and a sheet for "this is what you do on the street, and this is what you do on the track" and if I could have gotten the ignition system out f the car he would have checked it up to my max rpm for proper timing and phase, no extra charge. Need to get a carb from him to replace the stupid Weber based (Carter) carb.

I didn't get a carb from him, but I did get a distributor from him with the proper timing curve, checked for phase and a sheet for "this is what you do on the street, and this is what you do on the track" and if I could have gotten the ignition system out f the car he would have checked it up to my max rpm for proper timing and phase, no extra charge. Need to get a carb from him to replace the stupid Weber based (Carter) carb.

He also gave away a TON of free advise on the Mopar Chat forum.

(Sorry about the duplicate post. Tried to edit and this is what I get!)