GMC Truck Forum banner

1 - 4 of 4 Posts

·
My name's not Kevin
Joined
·
308 Posts
Discussion Starter #1
I recall reading somewhere that you can check your cat(s) with a temp gun. But I can't remember what the allowable temp change from front to back is. Does anyone know what the limits are? 10% comes to mind but I'm just not sure.
I have 1 thats 315 front and 325 rear. The other is 311 front and 385 rear.
 
1 - 4 of 4 Posts
Top