Another can of worms - The 1947 - Present Chevrolet & GMC Truck Message Board Network

LSGarage · 03-16-2008, 05:13 PM

While everything was out of the drivetrain I decided to change the fluids in my differentials. Just to make sure I had 4.10's like the PO said I counted the ring & pinons. I have a 3.40 in the back and 4.10 in the front. This may have contributed to the original problem I had with the TC not wanting to stay in 4Hi. Everytime I open up something else its another can of worms. The 4.10 up front looks in better shape than the 3.40 out back but I would rather go with the lower ratio. Had to get this off my chest, no one around my house wants to hear another said story about my truck.

Ace in the hole · 03-16-2008, 05:27 PM

so the PO wanted better gas millage but didn't want to or didn't know he had to change the front axle too. Sorry to hear. Hope you get it corrected.

My 3/4t came with 4.56 gears, I have a 4.11 rear but not a matching front yet. That will be a future project for me.

Chevy1980 · 03-17-2008, 05:56 PM

I currently have 4.10 gears. My buddy had an old shortbox Chevy like mine only it was a manual, his would haul butt, the top speed on my old truck is 65. Of course on 38.5's you shouldn't be going 80 anyway I guess. LOL

msgross · 03-17-2008, 07:35 PM

that sucks, nice to see another guy form PA though... I live about 35 min from you...

Americanrider · 03-17-2008, 09:54 PM

The bright side is that a 4.10 rear is cheaper than finding a good front axle. Hope you didn't damage the TC while driving like that.

While your under there make sure the diff vents are open and clear. I had a wasp make a nest in mine and blew the oil through the axle seals because it could not vent the gasses, ruined a $80 set of brake shoes.

*FormerMember* · 03-18-2008, 12:21 AM

Quote:

Originally Posted by LSGarage

While everything was out of the drivetrain I decided to change the fluids in my differentials. Just to make sure I had 4.10's like the PO said I counted the ring & pinons. I have a 3.40 in the back and 4.10 in the front. This may have contributed to the original problem I had with the TC not wanting to stay in 4Hi. Everytime I open up something else its another can of worms. The 4.10 up front looks in better shape than the 3.40 out back but I would rather go with the lower ratio. Had to get this off my chest, no one around my house wants to hear another said story about my truck.

5, 6 or 8 lug?

I assume you want 4.10s?

03-16-2008, 05:13 PM	#1
LSGarage Registered User Join Date: Aug 2005 Location: Mechanicsburg, PA Posts: 86	Another can of worms While everything was out of the drivetrain I decided to change the fluids in my differentials. Just to make sure I had 4.10's like the PO said I counted the ring & pinons. I have a 3.40 in the back and 4.10 in the front. This may have contributed to the original problem I had with the TC not wanting to stay in 4Hi. Everytime I open up something else its another can of worms. The 4.10 up front looks in better shape than the 3.40 out back but I would rather go with the lower ratio. Had to get this off my chest, no one around my house wants to hear another said story about my truck. __________________ 67 GMC 4x4, 305 V-6, 4-spd 86 S-10, 2.8 2WD LWB 01 Suburban (family hauler) 13 Honda CRV (wife's wheels) 03 Malibu (daughter’s car)

03-16-2008, 05:27 PM	#2
Ace in the hole Registered User Join Date: Apr 2007 Location: Kalamazoo, Michigan, USA Posts: 538	Re: Another can of worms so the PO wanted better gas millage but didn't want to or didn't know he had to change the front axle too. Sorry to hear. Hope you get it corrected. My 3/4t came with 4.56 gears, I have a 4.11 rear but not a matching front yet. That will be a future project for me. __________________ 1970 K20, 350--- SOLD 05 silverado extended cab short box- duramax Jeep wrangler unlimited Last edited by Ace in the hole; 03-16-2008 at 05:28 PM.

03-17-2008, 05:56 PM	#3
Chevy1980 Registered User Join Date: Mar 2008 Location: Florida Posts: 6	Re: Another can of worms I currently have 4.10 gears. My buddy had an old shortbox Chevy like mine only it was a manual, his would haul butt, the top speed on my old truck is 65. Of course on 38.5's you shouldn't be going 80 anyway I guess. LOL

03-17-2008, 07:35 PM	#4
msgross Registered User Join Date: Jul 2006 Location: Central PA Posts: 12,201	Re: Another can of worms that sucks, nice to see another guy form PA though... I live about 35 min from you... __________________ The Garage: 1968 K-10 SWB - "Project Money Pit" 1996 Z-71 - "huntin rig" 1969 C-10 LWB (SOLD) "Project flip that truck or else" 1993 Passport, F@rd 1-ton (SOLD)"Project Cousin Eddie" My Garage Build "The 1,000 footer"

03-17-2008, 09:54 PM	#5
Americanrider Registered User Join Date: Dec 2004 Location: NW, WA. Posts: 1,421	Re: Another can of worms The bright side is that a 4.10 rear is cheaper than finding a good front axle. Hope you didn't damage the TC while driving like that. While your under there make sure the diff vents are open and clear. I had a wasp make a nest in mine and blew the oil through the axle seals because it could not vent the gasses, ruined a $80 set of brake shoes. Last edited by Americanrider; 03-17-2008 at 09:57 PM.



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