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Manley 42137 Small Block Chevy Pushrod Length Checker, 3/8 Stud

Specs
Material Type:
Plastic
Sold in Quantity:
Each
Hole Diameter:
.38
MFG. Part #:
42137
Manley 42137 Small Block Chevy Pushrod Length Checker, 3/8 Stud

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Details

Reviews

Q & A

What's in the Box

For Small Block Chevy. Just slip it over a 3/8" rocker arm stud to instantly tell how much longer or shorter the push rods need to be.

  • Long valves, milled heads, cut blocks, small base circle camshafts all move rocker geometry far from optimum
  • Correct length pushrods keep rockers centered on the valve tip and reduce stem and guide wear
  • Checker tells the engine builder instantly what length pushrod is required

Notes

This is a very simple toll to use:

  1. Rotate lifter to cam base circle and slide the tool over the rocker stud.
  2. One of the ears on either side of the tool will rest on either the valve tip or the pushrod.
  3. If the tool rests on the valve tip, you will measure the gap left between the pushrod and the end of the tool. This distance will be added to the existing pushrod length for the new length needed for correct geometry.
  4. If the tool rests on the pushrod, and there is a gap between the tool and the valve tip, you will subtract the distance from the existing pushrod length for correct geometry.
  5. Works great with a pushrod length checking tool.

Customer Reviews

Rated 3 out of 5 by 2 reviewers.
RATING BREAKDOWN
2 reviews
5 Stars
1
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
1
RECOMMEND THIS PRODUCT:

Dave29
Verified Purchaser
Ohio, USA
Product Rating

No instructions came with the item.

August 16, 2014
The packaged item had no instructions. Manley website was no help. Disappointed. I would not recommend this.
No, I would not recommend this product.
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oldtimeydave
Verified Purchaser
Omaha, NE
Product Rating

Simple and easy.

May 14, 2012
A simple tool for measuring required changes in pushrod length for optimum geometry between the rocker arm and valve stem. To use this tool, set the cam lobes for one cylinder at no lift, so that you are measuring from the base circle. Install your standard length or old pushrods. Slide the tool over the rocker arm stud to demonstrate 1 of 3 conditions: 1. Perfect length: the tool contacts the valve stem tip and the pushrod coincidentally (no change in pushrod length) 2. Too short: the tool contacts the valve stem tip before the pushrod (measure the gap with feeler gauges and add to your old pushrod length) 3. Too long: the tool contacts the pushrod before the valve stem tip (measure gap to valve stem for length to subtract from standard pushrods). Easy to use, and cheaper than adjustable length pushrod checkers. Specify 3/8 or 5/16" rocker arm studs. Mine were 3/8" and the part was still VERY SNUG so I ran a drill bit through it to help things along.
Pros:
  • Easy To Use
  • Straight-forward
Yes, I recommend this product.
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  • Correct length pushrods keep rockers centered on the valve tip and reduce stem and guide wear
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