Posted by Bill Wincapaw on Thursday, September 05, 2002 at 6:10PM :
In Reply to: how to tell the difference from a non syncro np420 and a syn posted by dave on Wednesday, September 04, 2002 at 11:27PM :
Dave
Unless I've misunderstood your post, all NP 420's are syncro'ed (3rd & 4th gear ). If your trying to find out if the tranny you have is a NP 420 then the easiest way I know is to look at the boltup flanges that connect the tranny to the bell housing. On early non syncro'ed ( Spurgear ) NP's the holes on one side of the tranny were closer together then the holes on the other side ( angled ). Civilian NP 420's had the holes evenly spaced on both sides ( parallel ). 1957 and later FF's came with np420's.
Regards
Bill Wincapaw