Nate..... ..Bryan told you correctly, gitta real 12v roundcan coil (NAPA IC14-SB recommended) and use NO RESISTOR ever. Use the same points (gap = 0.015), use the same condenser, use the same sparkplugs (gap = 0.025). You just gett HOTTER sparkies when compared to the OEM squarecan 6v coil. Why? 'cuz function of coil design. What you seem to not understand is this; someone has "farmerized" yer frontmount 4-nipple distributor squarecan ignition coil to use a 6v-roundcan ignition coil plus a 12-to-6v converting resistor. Change the 6v-roundcan coil to a real 12v-roundcan coil and use NO RESISTOR. Understand? Face-it; the OEM 6v-squarecan ignition coil is barely adequate at best, and so someone more clever than you, decided to "fixxitt" with a roundcan coil. Well as clever as someone might have been, they still tried to do it on the cheap by using a 6v roundcan coil plus a 12-too-6v converting resistor. Electrically that works but not as good as using a real 12v roundcan IC14-SB ($15, cheap). Your call. As to yer question..... ."Would that be normal for the 12v coil to give me a noticable amount of power more?"..... ..well iff'n yer 6v roundcan coil was NOT matched with a correct 12-to-6v converting resistor; (there are many 12-to-6v converting resistors)..... then YES yer 12v coil could give you more power by NOT missing every firing stroke. Usually weak sparkies are more noticeable with HIGH-RPM engines; tractor engines are NOT high-rpm engines..... ....HTH, Dell, yer self-appointed sparkie-meister
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