Spark plug gap with MSD
10-28-2015, 06:09 PM
#3
Platinum Member
Platinum Member
iTrader: (6)
The same as a any Cheby back in the day, funny how things stay the same as things change........035 is a universal gap, Chevy, Brigs&Straton lol
10-28-2015, 06:32 PM
#6
Registered
iTrader: (1)
Everyone is correct (IMHO and experience) above.
Save bigger gaps for the beach. Hah !
Save bigger gaps for the beach. Hah !
10-28-2015, 07:31 PM
#8
Registered
iTrader: (3)
Back in the day, if you had the "High energy ignition", you gapped the plugs at .060. If you didn't have the HEI, with a conventional ignition, you gapped them at .035 on most GM V8's.
I had several pontiacs, with factory HEI's. .060 was the recommended gap, never had an issue.
.035-.045 imo, is just fine for what you're doing. I've ran my plugs at both of those gaps, never seen an issue, or a difference either way, in my boat engines.
I had several pontiacs, with factory HEI's. .060 was the recommended gap, never had an issue.
.035-.045 imo, is just fine for what you're doing. I've ran my plugs at both of those gaps, never seen an issue, or a difference either way, in my boat engines.
10-28-2015, 08:27 PM
#9
Back in the day, if you had the "High energy ignition", you gapped the plugs at .060. If you didn't have the HEI, with a conventional ignition, you gapped them at .035 on most GM V8's.
I had several pontiacs, with factory HEI's. .060 was the recommended gap, never had an issue.
.035-.045 imo, is just fine for what you're doing. I've ran my plugs at both of those gaps, never seen an issue, or a difference either way, in my boat engines.
I had several pontiacs, with factory HEI's. .060 was the recommended gap, never had an issue.
.035-.045 imo, is just fine for what you're doing. I've ran my plugs at both of those gaps, never seen an issue, or a difference either way, in my boat engines.
