zerfetzen 10 Report post Posted July 21, 2009 (edited) Hi all, I'm new here. I'm pretty sure I know how to change carburetor jets in a home garage (put in a new spark plug, adjust jets 2 sizes at a time, test drive and avoid idle, then read the plugs), but I was also curious what other people with mild 302's and 600cfm DP's have for jets? My basic engine info is in my signature, I'm at sea level, and it's goal is just a daily driver with some performance. I'm waiting on an aluminum radiator right now, so I can't change jets and read plugs at the moment. I just put a Proform 600cfm DP on it. The factory jets are 66 primary and 72 secondary. So far, I like the Proform better than Holley and Edelbrock. In the near future I'll get an air-fuel gauge to help dial it in to around 13.0:1 AFR. But before that, who can guess what jets it'll end up with? The only prize for guessing is bragging rights. Even if you're not up to guessing, what jets are in your carb, and what's your basic motor setup? Cheers. Edited July 22, 2009 by zerfetzen Quote Share this post Link to post Share on other sites
SlimeGold 69 15 Report post Posted July 22, 2009 (edited) I run a 600 Holley DP, not a proform but same cfm and basics. I have 68's in the primary and 72 seconds. Original 302 with .030 over (around 10:1 cr), Crane Energizer Cam 484 lift. 216@050. 110 LSA, E-Brock RPM intake, ported 69 302 heads 1.94 and 1.60 valves, roller rockers, long headers, 5 speed with 3.50 gears. Jetting is close if not perfect as far as I can tell. No AF guage just plug reading. I'm way higher in altitude than you tho. Edited July 22, 2009 by SlimeGold 69 Quote Share this post Link to post Share on other sites
