[Paul Ceasrine]

Dan,

A couple right off the bat,,,

The 1968 Ford Cobra-Jet 428/335 HP
NHRA re-factored it to 360 HP immediately, which sounds about right on..

The 1968 340/275 HP, if the Horsepower remained at what the factory
stated, the 1968 Barracuda or Dart GTS would have been classed in
G/Stock instead of E/Stock in 1968.

The NHRA re-factored the 340 to 310 HP even before the 1968
Winternationals. Again a fair HP rating.

1964/1965 Mopar 426/365 HP 'S' Street-Wedge.
Completely over-rated Horsepower,
10.0 - 1 Compression Ratio
Mild hydraulic camshaft,,,.(431/.431 Lift, w/268* duration)
Standard cylinder heads (#2406516 castings) (2.08" intake / 1.60" exhaust) (Small-port exhaust)
These cylinder heads were the same found on the 361/265 HP 2-Barrel engines
Weak valve springs
Horrible flowing cast iron intake manifold
Carter AFB rated at 575 CFM

Horsepower for the 426/365 HP 'S' Street-Wedge, rating probaby closer to 300 to 310 HP.


Scary fact;
In 1964 and 1965, the 64' Plymouth 426 'S' Belvedere and/or 'Sport Fury' ran in A/S or A/SA.
In 1966, it was classed in B/S or B/SA, versus the 66' 427/425 HP Biscaynes and 66' Galaxie 500's 427/425 HP cars.
In 1967, back into A/S or A/SA, versus the 67' Chevelle S396 396/375 HP cars.
In 1968, C/S or C/SA, against the 68' 428 Cobra-Jet Mustangs.

Talk about a 'tough challenge', they didn't stand a chance.