Unknown front diff

Bungy

LawnSite Member
Location
MN
How can I tell the difference between a GM 10 bolt front diff and a Dana 44? I have a 78 Chevy K-20. It has heavy duty everything. The rear diff is a GM 14 bolt with 10.5" ring gear. Also how difficult is it to change a np203 to part-time? Any input would be appreciated. Thanx, Bungy
 

Alan

Member
Look on the casting where the housing attaches to the axle tubes, next to the cover. I can't remember which side of the housing it's on but Dana will ahve the model number cast in there somewhere. I think it's on the upper right side, facing the cover, in the web that reinforces teh housing at that point. It's clearly visible at any rate.
 

fran

LawnSite Member
Location
iowa
Originally posted by Bungy
How can I tell the difference between a GM 10 bolt front diff and a Dana 44? I have a 78 Chevy K-20. It has heavy duty everything. The rear diff is a GM 14 bolt with 10.5" ring gear. Also how difficult is it to change a np203 to part-time? Any input would be appreciated. Thanx, Bungy
I BOUGHT A CONVERSION KIT FROM JC WHITNEY, MADE BY MILE MARKER, IT COST $115 I THINK IT ALSO COMES WITH NEW LOCKOUTS, VERY EASY TO INSTALL, YOU DON'T EVEN HAVE TO REMOVE THE CASE JUST THE TAILHOUSING.
 

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