obviously the guys selling the tool and making the video are clueless

Grumpy

The Grumpy Grease Monkey mechanical engineer.
Staff member
I think they posted this video simply to cause a couple hundred knowledgeable guys to start screaming and cause enough commotion to provide free advertising

" listen closely to what this gal says"


http://www.jegs.com/i/Proform/778/68902/10002/-1
Cam Lobe Checking Fixture - This tool allows you to accurately measure cam lift without fumbling with a magnetic base and a dial indicator. The fixture bolts to deck surface of block with the supplied 1/2'' and 7/16'' adapters, holds and maintains location of the dial indicator with 5'' extension at the precise angle over the lifters, assuring proper geometry.

Cam Lobe Checking Tools - These easy to use tools simply slide down into the lifter bore and sits atop the camshaft for accurate measurement of lobe lift and base circle run out. The universal version features an expanding collar to securely fit into any lifter bore measuring .750'' to 1.050''. The GM/Ford version is reversible with O-rings for secure positioning in either GM .842'' diameter or Ford .875'' diameter lifter bores. Both tools include two followers: one for flat tappet and one for roller cams.

''Heads-On'' Cam Checking Fixture w/ Dial Indicator - No more fumbling with a magnetic base and a dial indicator to measure cam lift. This fixture attaches to a 1/4'' - 20 thread valve cover bolt hole and holds the dial indicator in the precisely correct position over the rocker arm or valve retainer, assuring proper geometry. Includes 0-1.000'' dial indicator.

http://www.jegs.com/c/Engine-Building-Tools/10783/10002/-1

http://proformparts.specialtyauto.c...exec/category_id/146/nm/Engine_Builders_Tools

Features:
  • Easy to use - no need to fumble with a magnetic base and separate dial indicator
  • Checks for wear and solves ''mystery'' cam issues
  • Designed to work with cylinder head removed from block
  • All include a 0 - 1.000'' Dial Indicator that measures in 0.001'' increments
 
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