OK guys here we go.First off let me say I haven't done a compression test in about 30 years,so had a issue or two,no biggy.ran the right bank,turning motor over about 2 revs on each cyl.came up with some #'s the low 140's to 155.then moved to the left bank,thinking that my batt. might be getting low I put the charger on it and the spin increased noticeably,now I got readings from 155-164.so I went back and tried a new approach.spune the motor over about 4-5 revs,looking for highest reading,here's what I came up with.#1-161,#3-164,#5-155,#7-161 back to the right bank using same procedure #2-156,#4-170,#6-161'#8-155.I did go back and ck #4 a second time with same result.fixing to go back out and reinstall plugs,would appreciate recommendations on plug gap.I had set at .035,but there seems to be a lot of argument in the GM world about this when using different ignition than stock.the 1971 Plymouth scamp-for george jets,has a msd box,which I know absolutely nothing about,an electronice ign. dist.and a exterior coil.do you think .035 is all right to start with.running autolite 65 plugs.:realcrazy:
