spark plug gap

[louis liming]

what is the proper spark plug gap for a vac case with autolite 295 plugs and electronic ignition and stock 6volt coil

 

[Dan-IA]

.025 i think
Tune Up Specifications Case

 

[Anonymous-0]

I tuned up a 4010 JD using a dynamometer. I lost HP after the tuneup. The old plugs were burned out to 50 thousands, so I started opening up the new plugs .005 at a time from .025. For every .005 I opened the plugs, I gained about 1 HP. I now set all new plugs @ .040, even tho .025 is called for.