SKU: 74745474706
Ships within 48 hours · Estimated delivery Sep 16 - Sep 21
Not Designed To Work On Engines With A Knock Sensor
to under the hood
Fits 1965 to 1990 396-454 Big Block Chevy Engines
9 Inch Handle with Rubber Grip
For PROFORM Mini Starters
Wedge-Locking Header Bolts Hex Head 3/8 Diameter X 3/4 Inch Blk Oxide 16 Pcs Proform 000LB Capacity 1 Not Designed To Work OnEach 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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