When you click on links to various merchants on this site and make a purchase, this can result in this site earning a commission. Affiliate programs and affiliations include, but are not limited to, the eBay Partner Network.
Hello, I pulled my plugs and they look lean to me but I would like a different opinion. NGK plugs. Street car. 7040203 Quadrajet. I have a 383 with 10.5 compression, comp cam xr288hr, 1.6 ratio rockers, afr 195s, Edelbrock Q-jet performer manifold, rebuilt Q-jet done by CliffsHighPerformance, and a 4 speed. I have the timing at 26 initial, 10 mechanical, 36 total. If I let it sit there for 5 minutes the porcelain will have a tan color to it. However, the top of the porcelain is white after a drive and I thought that was the idle circuit. So I’m assuming I need to go down a size on my primary rod? Car doesn’t hesitate or anything, I had a vacuum leak that caused a part throttle hesitation but once that was fixed the hesitation went away.
Lean Quadrajet
