Plug gap?

[92Frankenstein]

I have a 306 with 87 heads, 600CFM carb, RPM airgap manifold, Flowtech headers, stock fuel pump, etc...

What should I gap em to?

One person told me .054, and another person told me .034 because it is carbed?

Help please.


Thanks...

 

[Ronstang]

What type of ignition.....that is what determines what gap you need to run.

 

[jesserose17]

.035 for points type ignition and .045-.050 for duraspark ignition

 

[HistoricMustang]

This is one of those areas where there is no real correct answer. Start at .032 to .035 and work your way up until the performance drops off.

With my MSD set up I run a .050 using Bosch plugs.

HistoricMustang
www.historicmustang.com