Source for Temperature Sending Unit
Thread Starter
Racer
Joined: Nov 2009
Posts: 267
Likes: 1
From: Menlo Park California
Source for Temperature Sending Unit
I want to install a new temperature sending unit; the current one works fine at 180 degrees but progressively overstates the actual temperature (as measured with an IR gun) as the coolant temperature rises above 180. I understand that some don't work well while others do. The units sold by Zip, DeWitt and Corvette Clocks by Roger claim to be in the latter category. Any recommendations? Thank you!
Last edited by C2Dan; Oct 12, 2010 at 12:11 AM.
Race Director
Joined: Mar 2009
Posts: 19,777
Likes: 4,592
From: Canada's capital
2020 Corvette of the Year Finalist (appearance mods)
C1 of Year Finalist (appearance mods) 2019
Before you do that, get a cheap aftermarket or used gauge that works correctly and hook it up to your current sender. The old gauges do some weird things quite often. K
Melting Slicks
Joined: Jul 2004
Posts: 2,867
Likes: 195
From: Maryland
You can contact Mary Jo (vettegal.com) to see if she still has old Delco senders from the 60s. I think she was selling them for $40. Another source could be the junkyards if you have them in your area. Look for any 70s GM vehicle that was gauge equipped. ( Cold- Hot indicator not idiot light)
Race Director
Joined: Mar 2001
Posts: 14,634
Likes: 4,684
From: Mustang OK
2026 Corvette of the Year Finalist - Modified
2025 c1 of the Year - Modified Winner
2024 C1 of the Year Finalist - Modified
2023 C1 of the Year Finalist - Modified
2015 C1 of the Year Finalist
On my boat engine (420SB), I have installed mechanical temp gauges directly into the water passage of the intake manifold. If an unused threaded hole is available in a manifold, this may be a viable option for monitoring temps.
Tom Parsons
Tom Parsons
Thread Starter
Racer
Joined: Nov 2009
Posts: 267
Likes: 1
From: Menlo Park California
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Thread Starter
Racer
Joined: Nov 2009
Posts: 267
Likes: 1
From: Menlo Park California
Thread Starter
Racer
Joined: Nov 2009
Posts: 267
Likes: 1
From: Menlo Park California
I want to install a new temperature sending unit; the current one works fine at 180 degrees but progressively overstates the actual temperature (as measured with an IR gun) as the coolant temperature rises above 180. I understand that some don't work well while others do. The units sold by Zip, DeWitt and Corvette Clocks by Roger claim to be in the latter category. Any recommendations? Thank you!
Le Mans Master
Joined: Dec 2007
Posts: 8,000
Likes: 659
From: Puget Sound
Mine from them does the same. I tried a couple of the TU-5 units and got wildly different readings from both of them. I ended up using the one from DeWitts only because I couldn't handle the gauge reading too hot even though I know it's not overheating.
