Option reference

M21 Muncie close-ratio 4-speed manual transmission

performance · required

1969 Camaro Z/28 engine bay; representative DZ 302 hardware context. Reused here only as related first-generation Z/28 visual context, not as a 1967-specific identity claim. 1967 Chevrolet Camaro Z/28

Reference Details

Availability: required
Category: performance
Code: M21
Confidence: documented
Notes: CRG Z/28 report states only M21 was available with 1967 Z/28.

Cars With This Option

1 linked car page.

1967 Chevrolet

1967 Chevrolet Camaro Z/28

Factory RPO Z28 Special Performance Package on Camaro coupe

Sources & Documentation

Camaro Research Group CRG Research Report: 1967-1969 Camaro Drivetrain Decoding

Camaro Research Group CRG Research Report: The First-Generation Camaro Z28