I have 302 with B303 cam, shorty headers with catted H-Pipe, Edlebrock intake, 4180C Motorcraft/Holley carb.
My plugs are almost white and have been since I installed this engine. The carb has a 6.5 power valve, #70 jets at the moment (just installed them today replaced #68's), metering plate has been drilled two sizes over. Vacuum reading is steady 18, I have adjusted the idle mixture on the primary side to achieve the vacuum reading. I do not believe I have a vacuum leak, the car runs strong, idles beautifully. I do not detect any detonation.
I installed a AutoMeter wideband Air/Fuel ratio gauge and before I installed the #70 jets was giving me a 16 A/F reading. Idon't have it installed at the moment.
Why is the car running so lean? Could it be too much static timing, I believe I may be at 16 BTDC. What should I check? I have some 72 jets but gosh I am already 8 sizes over stock (stock were 622).
Ideas, thoughts suggestions???
Thanks
George
My plugs are almost white and have been since I installed this engine. The carb has a 6.5 power valve, #70 jets at the moment (just installed them today replaced #68's), metering plate has been drilled two sizes over. Vacuum reading is steady 18, I have adjusted the idle mixture on the primary side to achieve the vacuum reading. I do not believe I have a vacuum leak, the car runs strong, idles beautifully. I do not detect any detonation.
I installed a AutoMeter wideband Air/Fuel ratio gauge and before I installed the #70 jets was giving me a 16 A/F reading. Idon't have it installed at the moment.
Why is the car running so lean? Could it be too much static timing, I believe I may be at 16 BTDC. What should I check? I have some 72 jets but gosh I am already 8 sizes over stock (stock were 622).
Ideas, thoughts suggestions???
Thanks
George