Personally I would not run a demon on anything. I have seen to many people have problems with them. On my 383 sbc. I dynoed 750, 830, & 850 holleys. A 950 Quick fuel & the HP1050 holley. the 1050 made the most power every time. If you run a 4150 base intake with a 2" 4150 to 4500 adaptor plate it will work great. Out of all the combos on the dyno. On 4 different engine sizes the 1050 made a minimum of 35 HP to a max of 50HP. Thats on every engine we tried. 383,406,421 436 SBC & 408 Ford.