BB plugs.
Thread Starter
Safety Car
Joined: Sep 2005
Posts: 4,226
Likes: 643
From: Orange County Ca
BB plugs.
I pulled a few plugs and they are getting a little worn. So, what to get?
Car is a '69 427 390 hp with '71 low compression heads. I think it is about 9-1 compression ratio. Everything else is basically stock.
The plugs I've been running are AC R43ts. They seem to work fine.
I'm wondering if this is the correct heat range? Some friends tell me I should run 44 or 45 heat range.
Any thoughts?
Car is a '69 427 390 hp with '71 low compression heads. I think it is about 9-1 compression ratio. Everything else is basically stock.
The plugs I've been running are AC R43ts. They seem to work fine.
I'm wondering if this is the correct heat range? Some friends tell me I should run 44 or 45 heat range.
Any thoughts?
Le Mans Master
Joined: Oct 2006
Posts: 7,123
Likes: 433
From: Gladstone MO
C3 of Year Finalist (appearance mods) 2019
If the insulator is white-- too hot. Black, too cold. Tan or gray- just right. 44's wouldn't hurt, that number was pretty standard to about everything.
