The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post

**LockDoc** · 03-20-2018, 11:43 AM

-
davepl is correct. A 2004r and a 3.08 rear gear do not play well together. The ideal gear for the 2004r is the one you already have. A 3.73

I tried the 2004r and 3.08 in my 69 Suburban and it put too much stress on the trans when it was locked up in OD. It overheated and blew trans fluid out the front seal..... If you left it in 3rd gear it worked OK but that defeated the purpose of the OD trans. Put a 3.73 in it and no more problems.

LockDoc

03-20-2018, 11:43 AM	#4
LockDoc The Older Generation Join Date: Aug 2006 Location: Montezuma, Iowa Posts: 25,332	Re: 3:07 Rear End - davepl is correct. A 2004r and a 3.08 rear gear do not play well together. The ideal gear for the 2004r is the one you already have. A 3.73 I tried the 2004r and 3.08 in my 69 Suburban and it put too much stress on the trans when it was locked up in OD. It overheated and blew trans fluid out the front seal..... If you left it in 3rd gear it worked OK but that defeated the purpose of the OD trans. Put a 3.73 in it and no more problems. LockDoc __________________ Leon Locksmith, Specializing In Antique Trucks, Automobiles, & Motorcycles (My Dually Pickup Project Thread) http://67-72chevytrucks.com/vboard/s...d.php?t=829820 -