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northerngmc · 03-21-2014, 11:05 AM

Most originals were 3.90 and a few were 3.38. You can buy the 3.38 as an kit to install.

I am not sure how strong the 55T rearend is, it seems to hold the 135 HP of my 235 just fine!

03-21-2014, 11:05 AM	#3
northerngmc Registered User Join Date: Jan 2004 Location: Whitehorse YK Canada Posts: 2,651	Re: 1959 Apache rear end Most originals were 3.90 and a few were 3.38. You can buy the 3.38 as an kit to install. I am not sure how strong the 55T rearend is, it seems to hold the 135 HP of my 235 just fine! __________________ Blaine 59 GMC 9314 a.k.a. Whoopee 68 C20 50th Anniversary a.k.a. The Rat http://www.flickr.com/photos/northerngmc/ http://www.members.tripod.com/P-wee/index_032.htm 1.61803 is one H of a lot better than 3.14159, no really it is!