dman535

I have had some trouble getting my Demon dialed in right. I was chasing what I thought was a problem with the secondaries. As it turned out I as to lean on the primaries. The car ran great off the line, but as soon as the secondaries kicked in I was getting a bog. As it turned out the motor was leaning out towards the top end of the primary limit. As the seoncaries kicked in it went to lean unti they could flow more fuel.

Most of the talk on the forum dictates the Demons were rich out of the box. Granted my carb is a little larger for the motor ( 750 VS on a 355 ci) but I am running an LT-1 cam which has more of a fuel appetite. I have an 81 jet in the primary side of the carb and it runs great.

Your mileage may vary :D

427V8

Cool, so how did you figure that out???

bhmyers

81's on the pri, is pretty large. I run a 750 demon on a 383 76pri/84sec making 526 HP @ 6400 and 532 FPT

dman535

I would guess you are putting a much stronger signal to the boosters

bhmyers

all on 93 octane......... Im very pleased with this setup. The problem with these C3's are the rear ends. With this amount of power If you hook up (slicks) you will break something.