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Matt B · 02-05-2023

You might try an Optima Red Top 4.2. It's not quite AGM but their spiral cell stuff seals tight as a drum and has loads of starting power.
Only it HARDLY fits in our cars. You need to modify the battery tray to accommodate the larger footprint and ideally chop the positive pole off with a jigsaw. Otherwise in a crash it might get in touch with the piece of metal that runs over the battery.
All in all not the best option in terms of fit but a very good and safe battery that comes with GM correct connectors.

02-05-2023	#2
Matt B Join Date: Jan 2021 Location: Beautiful Bavaria Posts: 520	Re: AGM Battery recomendations You might try an Optima Red Top 4.2. It's not quite AGM but their spiral cell stuff seals tight as a drum and has loads of starting power. Only it HARDLY fits in our cars. You need to modify the battery tray to accommodate the larger footprint and ideally chop the positive pole off with a jigsaw. Otherwise in a crash it might get in touch with the piece of metal that runs over the battery. All in all not the best option in terms of fit but a very good and safe battery that comes with GM correct connectors. __________________ ZR-1 #638/1991