Stock 96 ram air with a NOS dry 150 shot. What heat range plugs and gap are you running? If you have a part number please pass it on.

Thanks,

Brent

 

NGK TR6 .035 gap

 

The alternative would be Autolite 104 at 0.035"

 

How many steps colder are those?

 

One step colder than stock. The next step on the Autolites... 2 steps colder.... would be the 103. I run those NA. They will carbon up if you spend too much time putzing around in stop-n-go traffic,

 

Do you guys think that gapping too large would cause detonation?

I have 104s gapped at .040", with an Accel 300+ ignition, coil and wires, and I get spark retard even with a 75-shot. It's not fuel flow, as I have a FP meter and monitor the O2 sensor values.

Should I try gapping smaller or do I have another problem?

 

I'm running Autolite 103's @ .040 with a 150-175 shot NX.

 

IMO, i wouldn't run a 150 shot on a stock ignition. Get a aftermarket and u can gap the plugs at 0.038 or so(i'd reccomend ngk tr6's), and I'd pull some timing, if u have a stock setup and just blast in a 150 shot blind your gonna possibly break something without proper precautions.