High Compression 390

I would say farm truck is a stretch . But yes it has a np435 in it right now. It doesn’t do work, but it also is not a strip truck either. It’s a driver, it gets driven, whether is to the store or a car show or to my job. so I am back to thinking .038 head gaskets and maybe try to get the heads to 65cc by enlarging the chamber on the edge of the bore. Maybe jump up to a 276 Lunati.

Just play with a dynamic compression calculator on int close for an idea...and hopefully the grinder gets you a cam that captures 180-190 psi dynamic. If you ever dip into sea level... you might stand a chance.