Part profile
transmission · Muncie
The Muncie M21 is the close-ratio manual-transmission reference for GM performance pages when sources support M21 equipment.
31 linked car pages.
SS396 sport coupe or convertible
1966 SS396 sport coupes and convertibles are listed as 13817 and 13867 SS396 models.
Nova Super Sport 2-door hardtop coupe
1966 Nova Super Sport was available only as a two-door hardtop coupe.
factory W-30 two-door coupe/hardtop configurations; convertible excluded by sourced W-30 records
54 cars documented by body-style breakdown
1967 Camaro sport coupe donor context; Nickey 427 identity requires Nickey paperwork or registry/authentication evidence rather than 427 badges or stinger hood appearance alone
Dealer-built Nickey Chevrolet 427 Camaro conversion
2-door sport coupe
Factory RPO Z28 Special Performance Package on Camaro coupe
SS396 sport coupe or convertible
1967 SS396 is identified by 13817 sport coupe and 13867 convertible series references.
Two-door 4-4-2 coupe, hardtop, or convertible; verify the individual body style from the VIN and body tag
350 hp at 5,400 rpm and 435 lb-ft at 3,600 rpm
V8 sport coupe or convertible
Factory Chevrolet Camaro Super Sport
2-door sport coupe
Factory Chevrolet RPO Z28 package
SS396 series: sport coupe, convertible, or El Camino pickup
Factory Chevrolet SS396 series
1969 Camaro coupe; Baldwin-Motion Phase III identity requires Baldwin/Motion documentation rather than stripes or hood evidence alone
Dealer-built Baldwin Chevrolet / Motion Performance Phase III Camaro
2-door coupe
Chevrolet Central Office Production Order (COPO) 9560
2-door sport coupe
Factory special-order COPO, not a regular retail trim
V8 sport coupe or convertible
1969 Camaro Super Sport with the L78 396/375 hp big-block option
Factory Z25 SS 396 package; eligible 1969 Chevelle body style not fixed by target
RPO Z25 SS 396 Chevelle with optional RPO L78 engine
2-door Nova body; exact coupe/sedan trim-tag configuration not asserted
1969
2-door Nova body; Yenko identity requires paperwork, not body or stripe evidence alone
Dealer-converted Nova SS 396 path with Yenko-installed L72 427
2-door coupe / hardtop
Regular Firebird 400 Ram Air IV path; separate from the WS4 Trans Am package.
2-door coupe / hardtop
Pontiac factory Firebird Trans Am package with optional Ram Air IV engine.
GS455 two-door Sport Coupe or Convertible Coupe
Factory Buick GS455 Stage 1 performance configuration
2-door hardtop
Factory Buick GS 455-based GSX hardtop package
2-door Hardtop
400 Stage 1 units (of 678 total GSX units)
2-door Nova hardtop/sedan body; Yenko Deuce identity requires COPO/Yenko documentation rather than stripes alone
COPO/Yenko dealer-program Nova using the LT-1 350 small-block
2-door hardtop or convertible
Oldsmobile 4-4-2 with W-30 performance package
2-door coupe
Formula 400 with optional Ram Air 400, commonly called Ram Air III; not a Trans Am Ram Air IV.
2-door coupe
Factory Pontiac Firebird Trans Am
Two-door sport coupe hardtop; convertible also documented
Factory Stage 1 option on 1971 Buick GS/GS 455 records
2-door hardtop / sport coupe
GSX package on 1971 Buick GS, with Stage 1 455 selected.
2-door hardtop or convertible (GS series)
Factory GS Stage 1 performance configuration
two-door Colonnade hardtop coupe, including Sun Coupe
XS-code 455 CID Stage 1 V8
2-door hardtop coupe
1976