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Ships within 48 hours · Estimated delivery Aug 1 - Aug 6
All settings are easily controlled with two buttons
One Measures 0 to 1 Inch Range In
On-Head Rocker Arm Mount Style
Plastic Carrying Case Included
Wedge-Locking Header Bolts Hex Head M8 X .984 Inch Chevy LS Nickel Plt 12 Pcs Proform Engine Valve Cover Hold Down Tab All settings are easily controlledEach PROFORM Grade 8 Header Bolt is permanently assembled with a pair of special washers. When the bolt is torqued to 28+ ft lbs, the washers super hardened external teeth bite into and grip the bottom of the bolt head and the top surface of the header. After being self locked in this manner, any bolt loosening rotation is blocked by a wedge locking action created by the washers interfacing, matching cams. Its an uphill climb: vibration that might
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