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..
FBO Systems - Don Gould - Demon Carburetor
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