⚙️ Measure with Mastery, Build with Confidence!
The Proform 66788 Rod Bolt Stretch Gauge is a precision tool featuring a 0.001 inch dial indicator designed to measure rod bolt stretch accurately. Adjustable for bolts up to 2.75 inches, it ensures proper torque pre-load using manufacturer stretch factors. Lightweight aluminum construction makes it durable yet portable, making it a trusted choice for professional and hobbyist engine builders alike.
| ASIN | B000CCG1E0 |
| Best Sellers Rank | #211,454 in Automotive ( See Top 100 in Automotive ) #3 in Automotive Performance Gauge Sets #774 in Automotive Replacement Instrument Panel Gauges |
| Brand | ProForm |
| Customer Reviews | 4.4 4.4 out of 5 stars (89) |
| Date First Available | September 14, 2004 |
| Exterior | Smooth |
| Global Trade Identification Number | 00037995667888 |
| Is Discontinued By Manufacturer | No |
| Item Weight | 7.2 ounces |
| Item dimensions L x W x H | 144 x 72 x 24 inches |
| Item model number | 66788 |
| Manufacturer | Proform |
| Manufacturer Part Number | 66788 |
| Material | Aluminum |
| Model | Rod Bolt Stretch Gauge |
| OEM Part Number | 66788 |
| Product Dimensions | 144 x 72 x 24 inches |
| UPC | 037995667888 |
A**R
Accurate and Affordable
Great tool for occasional builds. Measures rod bolt stretch precisely and fits bolts up to 2.75”. A bit flimsy on longer bolts, but solid value for the price.
A**V
As ordered
A good tool to do build engines the right way
B**W
Good
Good mine was missing the bottom pin.. so couldn't really use it. Had to borrow one.
J**.
Needs a little more spring pressure
The tool works if you have the room to hang it upside down letting it have from the bolt, but if you add a small spring it works great.
J**T
Fits in tight spaces, worked awesome on my V-ROD engine
Well made
A**R
Inaccurate measurements due poor craftsmanship 👎.
Inaccurate measurements due to oversized I.D of housing hole for dial indicator gauge. 👎
T**E
You get what you pay for
Kind of a piece of crap but you get what you pay for, the C shaped part was visibly warped when it arrived, and not from any physical trauma, just bad QC. It work, is accurate enough, and it was cheap so I can't complain too much.
H**R
Cheap but it works.
The spring is very weak. The plunger doesn't move very smoothly and needs "help" to extend. You get what you pay for.
P**B
In a high volume shop where your building many engines a month you may want a better quality. But for infrequent use it does the job, it is accurate. I don’t have any trouble with it. If you’re not patient taking measurements even the best quality will not work for you.
J**N
I was a little worried with some of the reviews on here, but it works brilliantly for half the price of others. I would strongly recommend it.
K**Y
Inaccurate after comparing with my arp one
Trustpilot
1 month ago
1 month ago
