1968 Plymouth Road Runner

[Paul Ceasrine]

Dave,

Some of the specifications you asked for.

Car Weights:
Coupe: #3424 lbs. (10.22 wt/hp)
Hardtop: #3450 lbs. (10.30 wt/hp)

Both cars were classed in E/S or E/SA in 1968.
In Super Stock, SS/F or SS/FA.

383 Engine (Code H)
10.0 - 1 Compression ratio (Flat-Top Pistons)
.450 / .465 lift Hydraulic camshaft (276*/292* duration) (54* overlap)
#2843906 Cylinder heads (2.08 Intake / 1.74 exhaust) (85cc Open Chamber)
#2806301 Cast Iron Intake Manifold (Dual-Plane)
Carter 625 CFM AVS Carburetor (1 7/16" x 1 11/16")

The 383 Road Runner and Super Bee utilized the oil-pan windage tray, camshaft, cylinder heads, valve springs and exhaust manifolds from the 440 engine.

In 1968, that 383 was rated at 335 Horsepower,,,,,,now considered a 'stretch'.
Today, NHRA rates that engine at 300 HP.