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Message: <blockquote data-quote="Zwolaver21" data-source="post: 488344" data-attributes="member: 10024">some info on the headsFeatures & Improvements?240 CFM @ 0.550? lift out of the box, Fast as cast intake ports?185cc intake port, 93cc exhaust port?38cc or 44cc patented Twisted Wedge? combustion chamber design, 38cc provides approx. 10:1 compression on OE PI short blocks, 44cc provides approx 10:1 compression on OE NON-PI short blocks.?Intake Valve moved to opposite side of camshaft for improved mid-lift air flow, valve de-shrouding, and improved PTV clearance.?Stainless Steel 1.840?/1.450? valves, lite-weight chrome-moly retainers and locks?Drastic increase in PTV clearance, bolts onto OE Ford short blocks with no modifications to OE bore size or notching pistons with long duration camshafts up to 0.600 lift with OE type dish pistons. Flat top pistons may require additional clearance depending on camshaft?Polished 205lb/inch rate valve springs for up to 0.600? lift camshafts, 90lbs seat pressure, 205lbs open pressure @ 1.020??Uses standard OE style 2V camshafts, followers, lash adjusters, chain tensioners?Brand new castings Made in USA, Bullet proof 3/4? thick deck, Precision machined on modern CNC equipment. ?Aluminum Trick-alloy 4-bolt replaceable cam bearing journals?Universal Romeo and Windsor valve cover bolt hole pattern, 8mm front cover bolt holes?Trick-alloy powder metal valve guides, Ductile iron valve seats?Viton? fluroelastomer valve stem seals with integral spring locator?Full 3/4? reach spark plug bores, NO MORE INSERTS OR BLOW-OUTS?Bolts onto Romeo and Windsor blocks without any oil hole modifications?Provision for driver side back of head coolant mod?Made in USA! Covered under U.S. Patent 5,873,341 and other patents pending</blockquote>