View Single Post
Old 11-10-2015, 02:12 AM   #250
BLE 'BURBAN
In the Forgotten far North.
 
BLE 'BURBAN's Avatar
 
Join Date: Jul 2007
Location: Anchorage, Alaska
Posts: 2,627
Re: My 89 CC Dually: Double Wide

Quote:
Originally Posted by SCOTI View Post
Thank you sir.

Been driving it around town tonight. I have a systolic vibration that needs to be eliminated. I'm going to rotate the u-joints 90° & see if it helps. If not..... a double Cardan joint appears to be in my future. Also going to do more research on OD choices. 2200rpm @ ~50mph is not looking good for highway drives.....
What's your gear ratio?
My 87 had 4:10's in it and 215/85R16 tires.
I had the rear end gears swapped out to 3:54's from DANA/SPICER & also installed a GEARVENDORS O/D unit in it. Final drive in O.D. is now equal to 2:77 rear end gears.
mileage almost doubled on the highway.
And I still have plenty of towing ability.
__________________
1987 R3500 CREW CAB DUALLY (BIG RED)Acquired 06/12/2015
1990 chevy suburban V2500 5.7L
My cluster Mods-Nov 2007
overhead console Stereo install Round 2 Aug 2009
Heated/turn signal mirror upgrade
BLE 'BURBAN is offline   Reply With Quote