Posted 15 August 2003 - 11:23 AM
I have a 304 in my c;j and aslo have the MSD ignition. If I remember correctly I am running champion spark plugs that are gapped at .055 or .060 with no problems. I love the MSD.
1978 Jeep CJ7 4.0HO w/ Headmann Headers, MSD ignition, front dana 30 with Warn axle shafts, Warn premium locking hubs, custom drive shafts front and rear, NP 435 Transmission (6.69 to 1 first), dana 300 transfercase, model 20 rear differential with superior axles, Ox lockers front and rear, 4.10 gears, Currie twin stick, Warn premium front locking hubs, BDS 4" spring under suspension, Rancho RS 5000 shocks, revolver front shackles, warn XD9000I winch, 35" General Grabber M/T, Rubicon Express hand throttle and sway bar disconnects, dual optima batteries(red and yellow top) w/incab switch, and a on board hot water shower.