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7 Port Alloy Cylinder Head Crossflow



 Top quality new cast alloy head made by Pierce in USA
Designed to use 40, 42 or 45DCOE Webers directly
Can use jenvey or weber fuel injection, or bike carbs
Exhaust will take all standard cast manifolds or LCB manifolds
Will fit all A series and A plus engines from 1959 to 2001... 848 to 1480cc
Take all standard type parts
Drilled for 11 studs (not quite all the way through on 2 end ones)

23 cc chambers
Bronze valve guides
Valves 33  29.2  with hardened valve seats suitable for unleaded
Can be opened out to take 36.6 mm 31 valves

Weigh only 15lb (about 10 lb less than standard)
Come complete with manifold studs and 2 spacers for the exhaust side (to replace the inlet manifold)
Will fit under a round nosed mini bonnet using short rampipes on webers...
The power potential on these heads is massive 150 hp is regular and 170 bhp has been seen with some port work and 36mm valves, obviously in a fully prepared high spec engine with a very good cam.


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  • Manufactured by: Pierce USA

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