I already posted a chart that I made of the final drive ratios in another thread. As stated, the 3.42 ratio is part of an entire driveline package with a wider gearspread. It’s not like they added 4 overdrives and then also dropped the rear gearing. . . . . . .
2012 CCLB 3500HD Z71 Appearance Package Dmax/Alli
275/70-18 Cooper ST Maxx - Air Lift Bags - Viair Onboard Air - B&W Turnover Ball
Wishing it sounded like my old LB7 with Banks exhaust. . . . . . .
MY FUELLY PAGE LINK
1984 C20 6.2 J Code TH400