I have a buddy that is running a a 351W in a 67 EB, and he can't get the fuel map right. I know he has the model that is 200-275 HP, and he is wondering if that is too big. It seems to run rich, and when you jump on the throttle hard it bellows out black smoke. He was wondering if anyone knows of someone with a different fuel map he could try, or if anyone would be willing to lend a hand setting it up. Let me know, thanks Guys

I had a similar problem setting up the big 4 barrel unit on my 440, try taking the pressure reg. off so you can run the adjustment screw thru the inside. Then run a tap in the adjustment screw threads to clean out the thread locker. Reassemble the pres. reg. and lower the pressure 1 pound at a time. Mine is happiest at 17-18 psi. This made all the difference on my Holley setup.

I am not running the holley but on my 73EB with a 351W I am running a chevy TBI and it likes 14.5 to 15 psi and it cranks out about 400hp.