1972 Pontiac Lemans GTO
Well I went through my first rebuild on this carb with the help of Harold Demes on YouTube. Ran the numbers on it it is 800 cfm off of a Buick same period as the Pontiac 70-72. Fired it up choke came on nicely hit the throttle no idle. Would not idle to save your soul. I said well something I screwed up. Had to move it to work on the wife’s ride this weekend, then I noticed no vacuum going to the brake booster. So something was definitely a miss! Checked all vacuums all ok. So carburetor back on the bench tear it down all looks good. With the air horn off and all internals out I shined my light down and noticed a 16th of a gap between the throttle plate and the main body. The light clearly showed the gap. The cause? Too much JB Weld on the secondary wells. Filed them down fits like a glove. I will let you guys know how it is running after I find my missing choke rod. Dammit man!