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ATK Engines Remanufactured Cylinder Head for 1972-1979 Pontiac & Oldsmobile with 400ci/6.6L & 350ci/5.7L Pontiac V8

059-2P11

made in usa

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ATK Engines 2P11
$325.99
Core Charge: $50.00
Remanufactured Cylinder Head
  • 1972-1979 Pontiac Bonneville,Catalina, Firebird, LeMans, Grand Prix
  • 1975 Oldsmobile 98, Delta 88
  • Check "Vehicle Fitment" Tab for Applications
  • No SMOG
  • V8 Pontiac 400ci/6.6L & 350ci/5.7L
  • Free Shipping - Estimated to ship directly from the manufacturer on 04/12/21
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    Does ATK Engines 2P11 fit your vehicle?

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    1973 PONTIAC CATALINA

    • Liter: 5.7
    • SubModel: SAFARI
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 350
    • Engine Type: V8 ( 5.7L / 350 )
    • Engine Vin: N

    1977 PONTIAC BONNEVILLE

    • Liter: 5.7
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 350
    • Engine Type: V8 ( 5.7L / 350 )
    • Engine Vin: P

    1974 PONTIAC CATALINA

    • Liter: 6.6
    • SubModel: SAFARI
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 400
    • Engine Type: V8 ( 6.6L / 400 )
    • Engine Vin: P

    1973 PONTIAC LEMANS

    • Liter: 7.5
    • SubModel: SPORT
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 455
    • Engine Type: V8 ( 7.5L / 455 )
    • Engine Vin: Y

    1972 PONTIAC CATALINA

    • Liter: 6.6
    • SubModel: BROUGHAM
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 400
    • Engine Type: V8 ( 6.6L / 400 )
    • Engine Vin: T

    1973 PONTIAC LEMANS

    • Liter: 7.5
    • SubModel: SAFARI
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 455
    • Engine Type: V8 ( 7.5L / 455 )
    • Engine Vin: Y

    1978 PONTIAC FIREBIRD

    • Liter: 6.6
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 403
    • Engine Type: V8 ( 6.6L / 403 )
    • Engine Vin: K

    1973 PONTIAC BONNEVILLE

    • Liter: 6.6
    • SubModel: BASE
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 400
    • Engine Type: V8 ( 6.6L / 400 )
    • Engine Vin: S

    1972 PONTIAC CATALINA

    • Liter: 7.5
    • SubModel: SAFARI
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 455
    • Engine Type: V8 ( 7.5L / 455 )
    • Engine Vin: Y

    1973 PONTIAC LEMANS

    • Liter: 4.1
    • SubModel: SPORT
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 250
    • Engine Type: L6 ( 4.1L / 250 )
    • Engine Vin: D

    1974 PONTIAC LEMANS

    • Liter: 7.5
    • SubModel: SAFARI
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 455
    • Engine Type: V8 ( 7.5L / 455 )
    • Engine Vin: W

    1976 PONTIAC LEMANS

    • Liter: 4.1
    • SubModel: SPORT
    • Aspiration: NATURALLY ASPIRATED
    • CUI: 250
    • Engine Type: L6 ( 4.1L / 250 )
    • Engine Vin: D

    For the Pontiac, are these true Pontiac 6X heads? Are the valves Hardened for pump gas without additive? What size is the intake and exhaust valve? And last, are these low compression? 9:1,8:1 or 10:1?

    Asked by: PontiacRob389
    These are remanufactured heads and will have casting numbers of either 4X, 5C, 6H, or 6X. They have valve sizes of 1.96 and 1.66, and do not have hardened seats. The compression ratio is factory for the applications listed.
    Answered by: Ray E
    Date published: 2018-02-24
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