Stock internal LT1 with a NX wet 100-150 shot, what plug and what gap?

 

I'm gonna be using Autolite 104s gapped at .035 in mine, start spraying mine this week.

 

We always use NGK TR6s gaped at 35/36

 

ive tried both of those plugs and i like the ac delco r42lts the best... they last the longest and i have nevre had a problem with them..... i gap them at like 34

 

^^^^^im with fran

 

Same gap if i'm running a digital 6 and msd coil?

 

i have a digital 6 on mine

 

I eventually switched to the Autolite 104's @ .035 once I got tired of the NGK screw on caps sometimes loosening up. Never noticed a difference in performance between the two and the Autolites were significantly cheaper.

 

I run the Autolite 103's or 104's @ .040

 

With a 150 shot, would I run autolite 103s or 104s?

 

I run a 150 on autolite 104's gapped at 38

 

I ran the 104's with the 150 shot without any issues. When I went up to the 175 shot I switched to the 103's. Ran my best NA pass so far with the 103's in also. So I don't see it hurting NA performance with that cold of a plug. In my case at least.

 

I also use the AC Delco's @ a .040 gap with an MSD 6AL and a hot coil. Haven't had any problems.

Ken R.

 

I used to use the Autolite 103's gapped at .035. Now I'm trying the Autolite Race plugs AR-473 (I think) and it seems to run a lot better especially at WOT

Jody J.

 

Autolite 104's @ .035.

A side benefit of the 104's is that they are shorty
style and give better header clearance.

Emil:93Z,Vortech,NOS,water/methanol