I can't find a good reference source for plug applications. I was running an Autolite #24 and was told recently by a reputable shop known on the boards I should be running a #144. I don't know what the difference is?? The 24's were running good but if there is more performance with the 144 I'd like to switch. Is there a good source for reference?? Any info. would be appreciated. Thanks.
Indmar 454 Magnum (375) w/ 34degree advance