Towing differential

NovaMan · 04-13-2008, 01:21 AM

I missed your thread - been absent for a while. I have an '87 Chevy 3/4 ton 4x4 with a warmed-over 350. It came from the factory with 4.10 gears, but my calculations indicate it has been changed to 4.88s. That equates to 3000rpm at 55mph, which I think is a bit much for the highway. I figure if I change gears, that'd be the time to change differential(s) too. I'd be hauling my Nova on an open trailer and some tools and a pit bike or two in the bed. Honestly, I don't know what's in the rear diff right now; it could be a posi, a gov-lok, or an open differential. If I had unlimited funds, I'd run an Ox Locker or an Eaton E-locker, but I can't bear to spend that much money, so my options are a clutch-type Eaton posi, something like a Detroit locker, or a guv-bom-- er, I mean Gov-Lok.

TIA.

04-13-2008, 01:21 AM	#3
NovaMan Member Join Date: Sep 2004 Location: Kalamazoo, MI Posts: 117 Likes: 0 Liked 0 Times in 0 Posts	Re: Towing differential I missed your thread - been absent for a while. I have an '87 Chevy 3/4 ton 4x4 with a warmed-over 350. It came from the factory with 4.10 gears, but my calculations indicate it has been changed to 4.88s. That equates to 3000rpm at 55mph, which I think is a bit much for the highway. I figure if I change gears, that'd be the time to change differential(s) too. I'd be hauling my Nova on an open trailer and some tools and a pit bike or two in the bed. Honestly, I don't know what's in the rear diff right now; it could be a posi, a gov-lok, or an open differential. If I had unlimited funds, I'd run an Ox Locker or an Eaton E-locker, but I can't bear to spend that much money, so my options are a clutch-type Eaton posi, something like a Detroit locker, or a guv-bom-- er, I mean Gov-Lok. TIA. __________________ ~Pete 1970 Nova