Correct Jet Specs

If you order a kit without a blower and wish to use your own, please email us with your name and order number and let us know which model blower you have so we can send the correct bracket. Failure to do so may result in the kit not fitting with the parts you provided.

New Dyno results are in…

With the Harley Davidson S&S 40MM Setup, we got 96 HP and 131 ft. of torque out of our 1641cc engine. 8.5 : 1 mechanical compression with 92 octane pump gas and 7 psi of boost. These numbers were reached with 22 degrees of timing with the power kicking in around 2000 rpm. The 1641 engine has a stock cam, stock heads, counterweight crank and balanced flywheel.

CFM Ratings for Weber IDF Carbs

40s = 212 CFM

44s = 290 CFM

48s = 340 CFM

These numbers are with stock Venturis.