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FORD RACING GT-40 "X" XTRA PERFORMANCE "TURBO-SWIRL" ALUMINUM CYLINDER HEADS (58cc Chamber) -- M-6049-X307


FORD RACING GT-40 "X" XTRA PERFORMANCE "TURBO-SWIRL" ALUMINUM CYLINDER HEADS (58cc Chamber) -- M-6049-X307
Sold In Units of 1 each (2 Required)


 
List Price:$775.00
Our Price:$700.00
You save $75.00!

Part Number: M-6049-X307
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Description
 
    THE FAST, EASY WAY TO BOLT ON 65 HORSEPOWER! TRUE BOLT-ON PERFORMANCE

  • For use on 289/302/351 Windsor-style engines
  • Improved air flow over original GT-40 aluminum heads
  • Intake flows approximately 240 cfm at .550" lift (at 28" of H20)
  • Exhaust flows approximately 170 cfm at .500" lift (at 28" of H20)
  • Machined for 1.94" Intake and 1.54" exhaust valve diameters
  • Ford racing "X" heads use either GT-40 or aftermarket performance: intake manifolds
  • Intake port volume 178cc, exhaust port volume 62cc
  • High temperature exhaust valve seats. Thick deck for improved sealing, increased section thickness in critical areas for porting, and webbed rocker bosses for improved strength. Designed for bolt-on rocker arms, machined for tapered seat spark plug or gasketed. Compatible with Ford Racing intakes, headers, and valve train components. Can be machined for diagonal exhaust header flange mounting
  • High quality original equipment style 356-T6 aluminum castings, machining and components
  • Each aluminum head weighs approximately 22 lbs. - approximately 25 lbs. lighter than each cast iron GT-40 head
  • These GT-40 style heads use AGSF-32C spark plugs
  • Each GT-40X head is leak tested prior to assembly
  • Assembled with M-6507-J302 intake valves, M-6505-G302 exhaust valves, M-6513-A50 valve springs The valve springs are compatible with all Ford Racing roller camshafts
  • Designed to be used on Ford Racing Boss blocks M-6010-BOSS302 or M-6010-B302BB block with head gasket M-6051-CP331 INSTALLATION NOTES
  • Will not fit 1986 5.0L with flat-top pistons unless pistons are notched for valve relief
  • Must use head bolt kit M-6065-D289 to install cylinder heads on 289/302 blocks or head bolt and head gasket kit M-6051-A50 and intake gasket M-9439-A50/A51
  • Check rocker arm clearance to valve springs with production rocker arms
  • Check your intake manifold for port match; not all intakes are compatible due to the tall high-flow ports
  • Must use M-9439-A50 intake gasket
  • Designed for bolt-down rocker arms M-6564-B351 with head gasket M-6564-A50

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