COMP Cams Hi-Tech Pushrod Length Checker 6.800 in to 7.800 in

In this review the COMP Cams Hi-Tech Pushrod Length Checker is assessed as a practical, affordable tool for builders and tuners who need a quick way to determine correct pushrod length. The bottom line: it is a straightforward, well-built gauge that measures from 6.800 in to 7.800 in in.050 in increments and removes guesswork when setting rocker arm geometry. For anyone who wants consistent valve train geometry without hauling out calipers or micrometers, this tool delivers reliable, repeatable measurements and simple operation.

Key Features

• Precision construction: Made from steel alloy with a black oxide finish for durability and resistance to wear during repeated use.
• Adjustable range: Measures from 6.800 in to 7.800 in in.050 in increments so it covers common pushrod lengths for many engines.
• Ball-ball ends: Ball-seat ends provide realistic geometry when checking rocker arm position, helping simulate actual valve train contact points.
• Easy to read: The marked increments eliminate the need for expensive calipers and speed up the trial-and-error process when setting pushrod length.
• Performance impact: Used properly it helps achieve correct rocker arm geometry so users can realize improved valve motion and engine performance.

Who It's For

The tool is aimed at home engine builders, machine shop techs, and performance enthusiasts who regularly set up valve train geometry and want a low-cost, repeatable way to measure pushrod length. It is especially useful when working on overhead valve small block and big block V8s where small changes in pushrod length affect rocker geometry.

It is less appropriate for someone needing sub-thousandth adjustments or digital measurement records; machinists requiring micrometer-level precision or a tool with fine rotation adjustments may prefer dedicated precision measuring instruments.

Pros & Cons

Pros

• Good build quality from steel alloy with a protective black oxide finish for long service life.
• Clear, usable range from 6.800 in to 7.800 in in.050 in steps that fits many common engine builds.
• Ball-ball ends and marked increments make it easy to simulate rocker contact and choose the right pushrod length quickly.
• Offers excellent value compared to specialty measuring tools and speeds up setup.

Cons

• Some users report the adjusting ability is limited if the unit does not rotate freely, so occasional binding can prevent smooth fine-tuning.
• Not a replacement for precision micrometers when machine-shop-level accuracy is required.

Specifications

Our Verdict

The COMP Cams Hi-Tech Pushrod Length Checker is a practical, cost-effective tool for most engine builders who need reliable, repeatable pushrod length checks without specialized measuring gear. It is well made, easy to use, and covers a useful length range, though those needing ultra-fine adjustments should pair it with precision instruments. Overall it represents good value for routine valve train setup work.

Frequently Asked Questions

What length range does it cover?
The checker measures from 6.800 in to 7.800 in in.050 in increments.

Are the ends realistic for rocker contact?
Yes, it features ball-ball ends to simulate contact and help determine correct rocker geometry.

Is it a substitute for a micrometer?
No, it speeds up pushrod selection and geometry checks but is not a replacement for micrometers when machine-shop precision is required.