It is hard to figure for a few reasons. Injection gives you less vacuum (restriction) than a carb, and the higher the rpm you build power, the closer the two fuels come. I was told by one engine builder that he could make more power on gas. I never tried it myself, but he is very knowledgeable. In your situation you may see a tenth, maybe as much as three tenths if everything goes in your favor. I gained about a tenth on my switch from Dominator to Terminater, which doubled the airflow at 1.5 inch vacuum. throttle response was impressive. Put it on the bumper the very first pass.


8..603 156 mph best, 2905 lbs 549, indy 572-13, alky