toms57
04-23-2014, 07:56 PM
I am putting a ls1 in my 57 with a 4l60E.
I currently have 2 options of rear gears to install. I need to make the decision soon so I can get the computer set up.
I currently have a 3.08 standard gear that is good and also have a 3.33 Posi available.
My concern is if the 3.08 is too tall a gear to be putting against an overdrive transmission. It is strictly a cruiser, no street or strip racer. I drive the car lots on road trips so mileage is a vital concern. But I am also concerned that a 3.08 may tend to lug the engine at cruising speed.
The alternative is the 3.33 which would be a little higher rpm at highway speed, but possibly will allow the engine to pull it a little better.
Am I overthinking this too much?
Tire size is 225-70-15.
Any thoughts?
Tom
I currently have 2 options of rear gears to install. I need to make the decision soon so I can get the computer set up.
I currently have a 3.08 standard gear that is good and also have a 3.33 Posi available.
My concern is if the 3.08 is too tall a gear to be putting against an overdrive transmission. It is strictly a cruiser, no street or strip racer. I drive the car lots on road trips so mileage is a vital concern. But I am also concerned that a 3.08 may tend to lug the engine at cruising speed.
The alternative is the 3.33 which would be a little higher rpm at highway speed, but possibly will allow the engine to pull it a little better.
Am I overthinking this too much?
Tire size is 225-70-15.
Any thoughts?
Tom