GMC Truck Forum banner

1 - 6 of 6 Posts

·
Registered
Joined
·
270 Posts
Discussion Starter #1
Just bought a '98 k2500 with the 5.7. The dealer said he thought it had a 4.11 gear ratio, but it didn't feel like it. More like a 3.73. Anybody got one of these, or could either one be in it. It has a class 5 receiver on it if that helps. Auto trans. Super cab.
 

·
Registered
Joined
·
199 Posts
He thought? some dealer :nono:

Isn't there a sticker in glove box with the option codes? baring that, put the T case in neutral, Jack up the rear end and spin the wheel once. Count the drive shaft revolutions
 

·
Registered
Joined
·
2,172 Posts
What RPM does it run at 70mph?
2G's 3.73
2350ish 4.10
Just a guess though
 
1 - 6 of 6 Posts
Top