[Paul Ceasrine]

'Did We Miss Something At The '1967' Dodge Rebellion, And Did We Now Catch '1968 Dodge Fever'

Part 3

It is obvious that there is a significant difference in the 'driver-side' Exhaust Manifold unit..

The 1967 Charger 383 utilized a standard unit (Casting #2532626) which is the same manifold found on the
'intermediate' 383 2-Barrel 'non-performance' engines. These are somewhat restrictve units, that do effect exhaust flow
from the left side engine bank.

The 1968 Charger 383 now has a 'new design' High-Perfomance exhaust manifold (Casting # 2843992) with extended
header-type passages that have a wind-swept flow design which deliver an improvement in exhaust flow, which unleashes
an increase in horsepower gain from the left side engine bank.

Both exhaust manifolds have a 2.25" flange exit opening, but the 'new' 1968 unit has a more efficient header exit passage,
with a less restrictive bend, resulting in an increase of nearly 40% more exhaust flow.
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Both the 1967 Charger 383 and 1968 Charger 383 utilize the 'same' Passenger-side exhaust manifold (Casting #2532464).

The Exhaust System piping is the same size for both Models. The primary piping carries a 2.25" diameter to each
'low-restriction flow muffler'. The tail-pipe leaves the muffler with a 2.25" size, but is tapered down to a 2.00" diameter
as it crosses over the rear-axle, and then ends with a 1.88" tail-opening.

But, in the 1968 Charger 383, if you order the 'Exterior Decor Package', the tail-pipe leaves the muffler with a 2.25" size,
and is also tapered down to 2.00" diameter as it crosses over the rear-axle. But the 2.25" diameter is returned to the
pipe as it exits to the end with a 2.25" opening for the Chrome-Tipped extension.