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ProMAXX Performance Products CNC ported big valve heads available for the Ford big six.
The heads are based on a new designed thicker EFI style casting.
The combustion chambers are unshrouded to 73 cc using CNC machining.
Both the intake and exhaust have hard valve seats installed.
The valves are stainless steel 4.910" long 1.94" intake and 1.60" exhaust.
The head comes assembled with PAC valves springs good to .575 lift.
If you need a different spring for a different application it can be substituted for the difference in spring cost.
The rocker towers are machined, drilled and tapped for 7/16" rocker studs (studs included).
The intake flows
218 cfm @ .500"
225 cfm @ .600"
ProMAXX Performance Products CNC ported big valve heads available for the Ford big six.
The heads are based on a new designed thicker EFI style casting.
The combustion chambers are unshrouded to 73 cc using CNC machining.
Both the intake and exhaust have hard valve seats installed.
The valves are stainless steel 4.910" long 1.94" intake and 1.60" exhaust.
The head comes assembled with PAC valves springs good to .575 lift.
If you need a different spring for a different application it can be substituted for the difference in spring cost.
The rocker towers are machined, drilled and tapped for 7/16" rocker studs (studs included).
The intake flows
218 cfm @ .500"
225 cfm @ .600"
- Regular price
- $1,850.00
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Product Description
ProMAXX Performance Products CNC ported big valve heads available for the Ford big six.
The heads are based on a new designed thicker EFI style casting.
The combustion chambers are unshrouded to 73 cc using CNC machining.
Both the intake and exhaust have hard valve seats installed.
The valves are stainless steel 4.910" long 1.94" intake and 1.60" exhaust.
The head comes assembled with PAC valves springs good to .575 lift.
If you need a different spring for a different application it can be substituted for the difference in spring cost.
The rocker towers are machined, drilled and tapped for 7/16" rocker studs (studs included).
The intake flows
218 cfm @ .500"
225 cfm @ .600"
Customer Reviews
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