67' Barracuda 273 (Camshaft Results at the Track)

The Cylinder Head Specifications;

Casting # 2658920

* The heads were milled, to achieve a 57.3 CC 'combusuon chamber volume'.

* Martin-Wells (Well-Tite) 'hardened seats' were installed.

* Bronze Valve Guides

* The intake and exhaust ports were 'gasket/port' matched, and the high-spots 'casting flashes' were removed.

* No porting, other than 'only' going a 1/4" depth into the port for 'smooth-transition' blending.

* Minor 'rounding/blending' at the 'valve guide boss' inside the 'bowl area'.

* Intake Ports were equally matched to a 131 CC 'volume'. (4 CC's over 'stock' measurement)

* Exhaust Ports were equally matched to a 64 CC 'volume'. (4 CC's over 'stock' measurement).

* Intake 'Valve Seats' were cut '5-Angles' == 70* - 60* - 45* - 37* - 20*

* Exhaust 'Valve Seats' were cut '5-Angles' = 70* - 60* - 45* - 30* - 15*

*Seat Width = .040" Intake ~ .060" Exhaust

* All 'sharp edges' were radiused, and smooth-sanded with 400 Grit Wet-Dry Sandpaper,
while using a light film of Marvel Mystery Oil as a lubricant.

* Valves are Ferrea #5000 Series 'stainless steel'. 'High Performance Street/Strip Series' with 'swirl polish finish'.

* Intakes = 1.78" with 3/8" Stem
* Exhaust = 1.50" with 3/8" Stem

* Valve Angles = 45* with a 30* back-cut (.025" wide) on the Intake Valve
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Note; We didn't want to perform a 'full blown' Port & Polish Job on the Cylinder Heads, as we wanted to see what
we could get performance-wise out these heads.

Note; A 'gasket/port' match was neccessary, and 'rounding/blending' of the valve guide boss was required, to
promote a smooth flow and to increase the port velocity on these relatively stock port cylinder heads.