[blueracecar]

i put the29" hoosiers on and ran 12.50's@106. it should have run closer to 12.00@112 and i couldnt figure it out. but it has a holley vacuum secondary and the butterflies are shut and you cant open them even with your hands. looks like the next thing i buy will be a double pumper with mechanical secondaries.

[BIG G]

did you try to open them by, engine off, primarys must be wide open because of link that closes then on drivers side, if they wont open , you my need to remove carb and free then up or replace carb, throttle stop screw on secondary side may be set too low. hope this helps you , larry