Strip Dominator - Spread bore weld up

justinp61 said
FWIW, when my engine (Indy single plane) was on the dyno the super sucker equaled out the afr’s on each bank. They were off by 1 to 1 1/2 points without it. Another benefit was the extra 13 up it picked up.

they're supposed to reduce turbulence right under the carb by smoothing the transition from 4 holes ending at 90 degrees to the open manifold below.