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Hooker 6375HKR Super Competition Headers, 1966-70 Ford/Mercury 390-428
Hooker 6375HKR Super Competition Headers, 1966-70 Ford/Mercury 390-428

Hooker 6375HKR Super Competition Headers, 1966-70 Ford/Mercury 390-428

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Discontinued
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Hooker 6375HKR Super Competition Headers, 1966-70 Ford/Mercury 390-428
Hooker 6375HKR Super Competition Headers, 1966-70 Ford/Mercury 390-428
Hooker 6375HKR Super Competition Headers, 1966-70 Ford/Mercury 390-428
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Hooker 6375HKR Super Competition Headers, 1966-70 Ford/Mercury 390-428
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Part # 4256375HKR
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Details

MFG. Part #:
6375HKR
Collector Length:
12"
Hardware Included:
Yes
Gasket(s) Included:
Yes
Sold in Quantity:
Pair
GTIN Code:
700414010977

Info

Hooker Adjustable race headers allow you to change your header primary tube lengths, collector lengths and diameters and collector types (Classic 4 into 1, Merged and Split-Flow). By altering the relationship between the primary length and collector diameter and length it is possible to increase or decrease the torque and horsepower output at any specific R.P.M. level. For a slick track the header primaries or collectors can be shortened to decrease the low end torque for better traction. Larger diameter collectors will also reduce low end torque. On a good track with lots of bite, extending the primaries or collectors will pick up bottom end power for a harder launch and awesome e.t.'s. Smaller collector diameters will also increase low end torque. Hooker adjustable headers have taken more Pro Stock drivers to the championship than any other brand.

  • Long Tube Lengths
  • Long Transition Collectors
  • Monstrous Low-Mid Range Torque
  • Keep Top End Horsepower
  • Provides Finest Fit
  • Most Durable Available

Installation Instructions (PDF)

Important Messages:

  • This product is discontinued.
  • Get FREE shipping when your order includes this item and exceeds $99! Ground shipping only in the contiguous US.
Some parts are not legal for use in California or other states with similar laws/regulations

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Videos & Articles
  • Maintaining your headers is an important part of any hot rod. Pat gives some tips and demonstrates how well Purple Metal Polish works for keeping your headers looking great.
  • Watch our video on the ceramic coating process for Armor Hot Coating. Headers coated with Armor Hot Coating protect your car without sacrificing looks.
  • Jeremy explains the different options of headers that Speedway Motors offers for Demolition Derby cars. Watch this video to see a variety of options and the benefits of certain headers.
  • Hooker headers are installed in a 1967 Pontiac Firebird for increased power and a boost in performance. See how to work through fitment of the steering box, clutch Z bar and starter.

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