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73-87 Chevy _ GMC Trucks => Engine/Drivetrain => Rear Drivelines, Drive Axles and Gearing => Topic started by: Var on November 25, 2018, 06:14:07 PM

Title: Gears
Post by: Var on November 25, 2018, 06:14:07 PM
Peace be unto all
I recently had 3.73 gears on my truck and had them removed because they were pushing to many rpmís into the engine on the highway, so I went back to the original gears that came on the truck which is 2.73 and I lost sum horsepower such as a fast take off from stop sign to stop sign, but the truck drives a lot better with 2.73. By the way Iím on a th350 transmission.
So how can I use my 3.73 gears as everyday gears on highway and etc?


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Title: Re: Gears
Post by: Ronno6 on November 25, 2018, 09:09:16 PM
Probably the best bet would be to install an over drive tranny.
Back in the day that would have been something like a 700R4.
That would give you a .70:1 OD gear, in effect turning your 3.73 to a 2.61
Not sure about the modern stuff.
Good luck!
Title: Re: Gears
Post by: Var on November 26, 2018, 08:54:39 PM
Thanks Ronno6
Title: Re: Gears
Post by: Ronno6 on November 27, 2018, 08:24:49 AM
Thanks Ronno6

You are welcome.
I hope it helped.
Title: Re: Gears
Post by: Irish_Alley on December 05, 2018, 05:24:26 PM
two options one being like Ronno said or you can try and find a 'gear vendors overdrive unit'. if your 2wd it wont be had to have it working but a 4wd is a little funner. you might be able to find a used one, and you dont want to use a gear vendor on a OD trans