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ron667 Sep 5th, 01, 4:20 PM just tuning up my 67 chevelle small block i put in new plugs wires and so on decided to check the dwell and it was at 15 got my dwell meter and set it at 30 darn car seem like it doesnt even want to run at 30, 25 , no better >??? is isnt 30 about right for the dwell reading should i unhook vacum line when i set dwell (I DIDNT) NEED SOME HELP could timing be a factor in this i need a expert thanxs as always RON BillK Sep 5th, 01, 6:16 PM Ron, This post would probably get a lot more answers if it was in the proper forum. Probably engines and drivetrain. My thought is that you have the dwell meter on the 4 cyl scale instead of 8 ?? ------------------ Bill Koustenis Advanced Automotive Machine Waldorf Md 1971 Heavy Chevy - original owner Team Chevelle #100 rusty66 Sep 5th, 01, 11:18 PM Ron. Points are to be closed in average some 0.6 of the timecycle. In dwell this means for an 8 cylinder car : 360/8 * 0.6 = 27 degrees. You should unhook your vacuum! Rob ------------------ www.si.hhs.nl/~rob (http://www.si.hhs.nl/~rob) | ||