Engine Summary
- Manufacturer
- American Motors
- Family
- AMC Gen 2/Gen 3 V8
- Displacement
- 304 cubic inches
Also Known As
1973 AMX V8 range1973 Javelin AMX engine family1973 AMX standard 304 and optional 360/4011973 AMX Go 360/401 range
Engine profile
1973 Javelin AMX 304/360/401 V8 range
AMC Gen 2/Gen 3 V8 · 304 cubic inches · American Motors
Identification reference
Engine Details
Source-backed component numbers, codes, stampings, and application notes.
Model 4300 four-barrel application codes
- Value
- Factory 360/401 Model 4300 table lists code 3TM4 for manual transmission and 3TA4 for automatic transmission
- Application
- 1973 AMC 360/401 four-barrel service boundary; a carburetor code must be reconciled with engine tag, transmission, build records, date evidence, and calibration details for an individual AMX
- Type
- carburetor / carburetor list
- Car pages
- 1973 AMC Javelin AMX
Sources: 1973 AMC Technical Service Manual, page 4-4-10: Model 4300 calibrations , 1973 AMC Technical Service Manual, page 4-4-9: Model 4300 applications
304 factory service geometry
- Value
- 3.7502-3.7534-inch bore x 3.44-inch stroke; 8.3:1 two-barrel compression; 150 net hp at 4,200 rpm and 245 lb-ft at 2,500 rpm
- Application
- 1973 AMC 304 V8; use the H engine code, complete VIN, and car-specific records to establish original Javelin AMX installation
- Type
- engine assembly / specification
- Car pages
- 1973 AMC Javelin AMX
Sources: 1973 AMC Technical Service Manual, page 1-B-21: V8 engine specifications
360 factory service geometry and output range
- Value
- 4.0799-4.0831-inch bore x 3.44-inch stroke; 8.3:1 compression; two-barrel output 175 net hp/285 lb-ft; four-barrel output 195 hp/295 lb-ft with single exhaust or 220 hp/315 lb-ft with dual exhaust
- Application
- 1973 AMC 360 V8; distinguish N two-barrel and P four-barrel engine paths plus exhaust and transmission configuration before applying a rating to an individual AMX
- Type
- engine assembly / specification
- Car pages
- 1973 AMC Javelin AMX
Sources: 1973 AMC Technical Service Manual, page 1-B-21: V8 engine specifications , 1973 AMC Technical Service Manual: V8 Engine Identification
401 factory service geometry
- Value
- 4.165-4.167-inch bore x 3.68-inch stroke; 8.5:1 four-barrel compression; 255 net hp at 4,600 rpm and 345 lb-ft at 3,300 rpm
- Application
- 1973 AMC 401 V8; use the Z engine code, complete VIN, and car-specific records to establish original Javelin AMX installation
- Type
- engine assembly / specification
- Car pages
- 1973 AMC Javelin AMX
Sources: 1973 AMC Technical Service Manual, page 1-B-21: V8 engine specifications
Optional 360 four-barrel
- Value
- 220 net hp and 315 lb-ft
- Application
- 1973 Javelin AMX; available with four-speed or automatic and eligible for Go Package
- Type
- engine assembly / specification
- Car pages
- 1973 AMC Javelin AMX
Sources: 1973 AMC full-line sales brochure , 1973 Javelin AMX specifications, options, and colors , 1973-74 AMC Javelin AMX buyer's guide
Optional 360 two-barrel
- Value
- 175 net hp and 285 lb-ft
- Application
- 1973 Javelin AMX with Torque-Command automatic
- Type
- engine assembly / specification
- Car pages
- 1973 AMC Javelin AMX
Sources: 1973 AMC full-line sales brochure , 1973 Javelin AMX specifications, options, and colors , 1973-74 AMC Javelin AMX buyer's guide
Optional 401 four-barrel
- Value
- 255 net hp and 345 lb-ft
- Application
- 1973 Javelin AMX; available with four-speed or automatic and eligible for Go Package
- Type
- engine assembly / specification
- Car pages
- 1973 AMC Javelin AMX
Sources: 1973 AMC full-line sales brochure , 1973 Javelin AMX specifications, options, and colors , 1973-74 AMC Javelin AMX buyer's guide
Standard engine
- Value
- 304 two-barrel; 150 net hp and 245 lb-ft
- Application
- 1973 Javelin AMX base power team
- Type
- engine assembly / specification
- Car pages
- 1973 AMC Javelin AMX
Sources: 1973 AMC full-line sales brochure , 1973 Javelin AMX specifications, options, and colors , 1973-74 AMC Javelin AMX buyer's guide
Cars Using This Engine
1 linked car page.
two-door hardtop
1973 AMC Javelin AMX
Four-seat Javelin AMX hardtop on a 110-inch wheelbase