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Recessed Base
Mazda 6 2009-2013
Complete Small Block Ford Windsor 289-351 185cc CNC Ported Aluminium Cylinder Heads with 58cc Chamber (Pair)
Part Number : IFR6T11
AF4820-8223
Proflow Cylinder Heads, LS3 SuperMax 276 CNC, Bare, Holden, Chev Aluminium, (6-B BBC Recessed BasePart Number : Proflow does not sacrifice quality for a low price you get both with our aluminium cylinder heads. Our LS3 cylinder heads are designed for street race performance engines to give the ultimate in flow at a competitive price. Cast from A356 aluminium, these 15 LS3 rectangle port heads are designed to fit LS series engines with a 4. 00" or larger bore. These bare 275cc heads accept 2. 165" diameter intake valves and 1. 60" exhaust valves
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