CLASS RACER FORUM - View Single Post - 96-99 Chevy/GMC 3500 ?'s

Ed Wright · 10-30-2011, 10:57 AM

As far as I know they are all the same. The 4L80E is a good transmission. There are some good gains in the tuning. My '99 Suburban gets about ten MPG pulling my 6700 lb trailer. I would look for one with 3.73 gears, 4.10 is more common with dual wheels, but the 3.73s get better mileage. Mine sure doesn't need 4.10s.

10-30-2011, 10:57 AM	#2
Ed Wright Veteran Member Join Date: Mar 2005 Location: Sand Springs, OK Posts: 8,132 Likes: 896 Liked 390 Times in 170 Posts	Re: 96-99 Chevy/GMC 3500 ?'s As far as I know they are all the same. The 4L80E is a good transmission. There are some good gains in the tuning. My '99 Suburban gets about ten MPG pulling my 6700 lb trailer. I would look for one with 3.73 gears, 4.10 is more common with dual wheels, but the 3.73s get better mileage. Mine sure doesn't need 4.10s. __________________ Ed Wright 4156 SS/JA