This topic contains 2 replies, has 3 voices, and was last updated by Alex Mckenzie 1 year, 6 months ago.
Hi everyone, I’m gonna try to make this quick. I have a third gen camaro with a 305 small block that I took off all the computers and emissions crap off of. Then I installed an hei distributor with vacuum advance (hooked to ported), then added a 750 vacuum secondary holley carb (with gaskets and adapter plate of course). The issue I’m having is if I expose the transition slots to show a square my engine rpms are at 1200 and it slames into gear. I end up having to close the primary blades so far that no transfer slot is showing, which is giving me a hesitation with the slightest of throttle movement. The secondaries are closed all the way and turned back in just a little so they don’t stick. And no, it’s not on the fast idle cam. The timing is recurved and set to 15 degrees initial and 35 total. Ive checked for vacuum leaks and didn’t find any. I’m wondering if maybe my 750 is too big? Any ideas?
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