Hydro attic 425

[Larry Davick]

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

 

[RJW]

> 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.