GMCforum
For enthusiast of the Classic GMC Motorhome built from 1973 to 1978. A web-based mirror of the GMCnet mailing list.

Home » Public Forums » GMCnet » Hydro attic 425
Hydro attic 425 [message #368909] Sat, 26 February 2022 18:11 Go to next message
ljdavick is currently offline  ljdavick   United States
Messages: 3548
Registered: March 2007
Location: Fremont, CA
Karma: -3
Senior Member
https://youtu.be/WMhV8Eoe8rA
https://youtu.be/WMhV8Eoe8rA

I really like this guy’s YouTube channel. It’s not flashy, it’s more like talking to a neighbor about cars. In this episode he talks about the THM425.


Larry Davick
A Mystery Machine
1976(ish) Palm Beach
Fremont, Ca
Howell EFI + EBL + Electronic Dizzy
Re: Hydro attic 425 [message #368924 is a reply to message #368909] Mon, 28 February 2022 15:30 Go to previous messageGo to next message
rjw   United States
Messages: 697
Registered: September 2005
Karma: 4
Senior Member
ljdavick wrote on Sat, 26 February 2022 19:11
https://youtu.be/WMhV8Eoe8rA
https://youtu.be/WMhV8Eoe8rA

I really like this guy’s YouTube channel. It’s not flashy, it’s more like talking to a neighbor about cars. In this episode he talks about the THM425.
Thanks for the link. Interesting discussion on THM 400/425. He likes GMC motorhomes.

He also has a new video on "Worst Automotive Parts / Components of All Time: GM HEI Ignition Module" where he explains why they are problematic and why you should carry a spare, which I do.
https://www.youtube.com/watch?v=raT49BIi_h0

I carry several modules (7-pin as I have EFI) and a module tester. I've only had one fail in over 120,000 miles and that was caused by other issues.


Richard
76 Palm Beach
SE Michigan
www.PalmBeachGMC.com

Roller Cam 455, TBI+EBL, 3.42 FD, 4 Bag, Macerator, Lenzi (brakes, vacuum system, front end stuff), Manny Tranny, vacuum step, Tankless + OEM water heaters.
Re: Hydro attic 425 [message #368925 is a reply to message #368909] Mon, 28 February 2022 18:18 Go to previous message
Silvernort is currently offline  Silvernort   United States
Messages: 95
Registered: June 2019
Location: Rock Springs, WI
Karma: 0
Member
He just dropped this one on the motorhome in general today:

https://www.youtube.com/watch?v=d9TMNvpNwu8&ab_channel=RareClassicCars

pretty good synopsis.
Cheers


Shane Harvey 1973 26' "Packer Backer", 1976 Palm Beach, 1965 Dart
Previous Topic: Strange Onan problem
Next Topic: [GMCnet] Rare Classic Cars
Goto Forum:
  


Current Time: Wed May 15 18:12:48 CDT 2024

Total time taken to generate the page: 0.00569 seconds