GM8 ✓ Factory-verified

Chevrolet · Regular Production Option

Rear axle - 2.56 ratio (Economy)

Years 1963–79, 2006–09, 2014 Models 5 Factory citations 6

Query this via API →

Also described as 2.56:1 rear axle2.56 axle ratioAxle, rear, 2.56 ratioRear axle, 2.56 ratio

Also documented for BuickCadillac

Documented applications

Camaro →

• 1970s ● Confirmed

Impala / Full-Size →

• 1963–70s (varies) ● Confirmed

Nova / Chevy II →

• 1975 ● Confirmed

Corvette — C6 (2005–2013) →

• 2006–2009 ✓ Factory-verified
  ⛭ GM factory document — 2006 chevrolet corvette rpo code list, p.1.

  ⛭ GM factory document — 2007 chevrolet corvette rpo code list, p.1.

  ⛭ GM factory document — 2008 chevrolet corvette rpo code list, p.1.

  ⛭ GM factory document — 2009 chevrolet corvette rpo code list, p.1.

  ⛭ GM Heritage factory kit — 2006 Chevrolet Corvette, p.25.

Corvette — C7 (2014–2019) →

• 2014 ✓ Factory-verified

  only in: Stingray without Z51; all trims: O

  ⛭ GM factory document — 2014 chevrolet corvette stingray fleet order guide wayback, p.1.

Related codes · mentioned in these notes

Z51

This page aggregates every documented appearance of GM8 in the Chevrolet reference. Confidence and citations are shown per application — the same code can be better documented in one year than another.