1.) What is the coding to find out if you have a 3.73 rear end? When I type GT4 into the RPO decoder it says 3.73 but on the tech info it says Man. Option, Auto Option G92.

2.)What diameter is the intermediate tube on an L69?

3.)What are the cam specs? I'm looking at getting a Crane PowerMax cam with 270/276 duration and .440/.454 lift and wanted to know how much of a jump that is over the stock cam on the L69.

Thanks

 

1. ?
2. 2.5(?)
3. 202 intake 206 exhaust duration
.403 intake .414 exhaust lift

 

MY first question should read: What code are you looking for to know if you have 3.73 gears?