The 1947 - Present Chevrolet & GMC Truck Message Board Network - View Single Post - Gear ratio, tire size, and lift? 72 Suburban

1 MPG · 11-12-2013, 10:13 PM

I'm planning to install 35x12.50x15, 4 inch or six inch lift, and possibly 4:10 gears. I would still like good RPMs at highway speeds.

What's the factory tire size that came with 1972 4x4 Suburbans.
My current gear ratio is stock 3:08, 350 turbo transmission, and 350.

Let me know what works for you?

11-12-2013, 10:13 PM	#1
1 MPG Registered User Join Date: Apr 2013 Location: Indianapolis Indiana Posts: 11	Gear ratio, tire size, and lift? 72 Suburban I'm planning to install 35x12.50x15, 4 inch or six inch lift, and possibly 4:10 gears. I would still like good RPMs at highway speeds. What's the factory tire size that came with 1972 4x4 Suburbans. My current gear ratio is stock 3:08, 350 turbo transmission, and 350. Let me know what works for you?