Wanted Stock rear end - Page 2 - The 1947 - Present Chevrolet & GMC Truck Message Board Network

northerngmc · 12-28-2017, 01:39 AM

Using an online calculator swapping the 3.90 to 3.38 in my 59 should drop the rpm at 60 mph from 2838 to 2460.

nail pounder · 12-28-2017, 02:58 AM

Quote:

Originally Posted by northerngmc

Looks like the stock 55T rear end to me.

I swapped the 3.90 to 3.38 using a new pinion and ring gear in my 59.

https://www.yukongear.com/productdet...spx?ProdID=823

My 59 has the stock 235 and 3 speed column manual trans. The rear end swap made 60 mph a lot more comfortable.

Yes, also known as the 55T (truck) as opposed to 55P (passenger car). And a link to the gears as well. Nice!

2001convertable · 12-28-2017, 04:43 PM

The search is back on for a rear. I guess the guy doesn't want to sell it. If anyone has one to sell please contact me.

2001convertable · 12-28-2017, 08:30 PM

Daveny and I spoke. Im going upstate on Saturday.

nail pounder · 12-28-2017, 08:55 PM

Cool, I was going to say that they were used in 1/2 tons from 55-62. I'm sure there are others out there, Craigslist etc. I have seen them for free, maybe on the 55-59 or 60-66 Facebook page I think.

2001convertable · 12-29-2017, 07:31 PM

I decided to wait to change out the rear.The guy who is the local person who rebuilds the rears said its not a good idea. His price to rebuild it was over 1600. to rebuild and change out the ring and pinion with me installing it.

nail pounder · 12-29-2017, 09:32 PM

If your not worried about keeping it stock and just want to enjoy driving it, why not check into a different rear end? Or a different transmission? I have a five speed in my 66 and a 700r4 in my 58. A T5 (manual) would be perfect with the 235, a lot of guys are running that set up.

2001convertable · 02-28-2018, 01:51 PM

Does anyone know if the dana 45 rear and the 55t rear use the same size u joint flange?

Kevin_C · 02-28-2018, 11:51 PM

If you decide you want a stock rear end with 390's I may part with mine. Looks like I'm about 4hrs away from ya. PO did a full chassis restoration on the truck but I'm going a different direction so pretty much everything will be removed. PM me if u want pics as I currently have the bed off.

2001convertable · 03-01-2018, 08:06 AM

I already bought one in New Jersey last week.But Thank you If anyone knows if the flange is the same or different? I'm hoping it would bolt up to my drive shaft with no mods.

12-28-2017, 01:39 AM	#26
northerngmc Registered User Join Date: Jan 2004 Location: Whitehorse YK Canada Posts: 2,651	Re: Wanted Stock rear end Using an online calculator swapping the 3.90 to 3.38 in my 59 should drop the rpm at 60 mph from 2838 to 2460. __________________ 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!

12-28-2017, 04:43 PM	#28
2001convertable Registered User Join Date: Dec 2017 Location: wantagh new york Posts: 203	Re: Wanted Stock rear end The search is back on for a rear. I guess the guy doesn't want to sell it. If anyone has one to sell please contact me.

12-28-2017, 08:30 PM	#29
2001convertable Registered User Join Date: Dec 2017 Location: wantagh new york Posts: 203	Re: Wanted Stock rear end Daveny and I spoke. Im going upstate on Saturday.

12-28-2017, 08:55 PM	#30
nail pounder Registered User Join Date: Aug 2014 Location: Fallbrook CA Posts: 453	Re: Wanted Stock rear end Cool, I was going to say that they were used in 1/2 tons from 55-62. I'm sure there are others out there, Craigslist etc. I have seen them for free, maybe on the 55-59 or 60-66 Facebook page I think.

12-29-2017, 07:31 PM	#31
2001convertable Registered User Join Date: Dec 2017 Location: wantagh new york Posts: 203	Re: Wanted Stock rear end I decided to wait to change out the rear.The guy who is the local person who rebuilds the rears said its not a good idea. His price to rebuild it was over 1600. to rebuild and change out the ring and pinion with me installing it.

12-29-2017, 09:32 PM	#32
nail pounder Registered User Join Date: Aug 2014 Location: Fallbrook CA Posts: 453	Re: Wanted Stock rear end If your not worried about keeping it stock and just want to enjoy driving it, why not check into a different rear end? Or a different transmission? I have a five speed in my 66 and a 700r4 in my 58. A T5 (manual) would be perfect with the 235, a lot of guys are running that set up.

02-28-2018, 01:51 PM	#33
2001convertable Registered User Join Date: Dec 2017 Location: wantagh new york Posts: 203	Re: Wanted Stock rear end Does anyone know if the dana 45 rear and the 55t rear use the same size u joint flange?

02-28-2018, 11:51 PM	#34
Kevin_C Registered User Join Date: Aug 2017 Location: Danville Nh Posts: 231	Re: Wanted Stock rear end If you decide you want a stock rear end with 390's I may part with mine. Looks like I'm about 4hrs away from ya. PO did a full chassis restoration on the truck but I'm going a different direction so pretty much everything will be removed. PM me if u want pics as I currently have the bed off. __________________ 1955 chevy longbed shortened, C4 vette suspension front and rear with flatout kit. Gen V LT1/8L90 http://67-72chevytrucks.com/vboard/s...d.php?t=746958

03-01-2018, 08:06 AM	#35
2001convertable Registered User Join Date: Dec 2017 Location: wantagh new york Posts: 203	Re: Wanted Stock rear end I already bought one in New Jersey last week.But Thank you If anyone knows if the flange is the same or different? I'm hoping it would bolt up to my drive shaft with no mods.



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