383 'The Numbers'
1967 383
325 HP @ 4800 RPM
425 Ft/Lbs of Torque @ 2800 RPM
10.0 -1 Compression
Piston @ .014 Below Deck
Camshaft
.425/.437 Lift ~ 256*/260* Duration ~ 32* Overlap
Valve Springs = #134 lbs. Valve Closed / #208 lbs. Valve Open
Cylinder Heads
#2406516
2.08" Intake / 1.60" Exhaust
Combustion Chamber (Closed) = 73.5 CC's
Intake Manifold
#2205968
Low-Riser Dual-Plane
Bore Holes = 1 7/16" Primary / 1 9/16" Secondary
Carburetor
Carter AFB
1 7/16" Primary ~ 1 9/16" Secondary
575 CFM
Exhaust Manifolds
2.25" Header Outlet Opening
Style - Down-Angle w/Short Header
Exhaust Piping = 2.25" Primary/ 1.88" Secondary
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1968 '383' Road Runner
335 HP @ 5200 RPM
425 Ft/Lbs of Torque @ 3200 RPM
10.0-1 Compression
Piston @ .021 Above Deck
Camshaft
.450/.458 Lift ~ 268*/284" Duration ~ 46* Overlap
Valve Springs = #129 lbs. Valve Closed /#280 lbs. Valve Open
Cylinder Heads
#2843906
2.08" Intake / 1.74" Exhaust
Combustion Chamber (Open) 79.5 CC's
Intake Manifold
#280631
Low-Medium Riser Dual-Plane
Bore Holes = 1 11/16" Square-Bore Carburetor Base
Carburetor
Carter AVS
1 7/16" Primary / 1 11/16" Secondary
625 CFM
Exhaust Manifolds
2.25" Header Outlet Opening
Style - Wind-Swept w/Extended Header-type Passages
Exhaust Piping = 2.25" Primary / 2.25" Secondary
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Note; According to Chrysler, the 1968 383/335 HP Road Runner Engine put out only +10 Horsepower over
the 1967 383/325 HP Engine.
