Zip Corvette: Offset and Backspacing (Link in Body)

During my research on new wheel/tire packages for my 76 Corvette, I came across some good info regarding offset and backspacing.

Zip Corvette

“Wheel back Spacing is very simple and is often confused with the offset. To determine a wheel’s offset you must first find the wheels back space. The back space can be measured in inches but should be converted to millimeters before proceeding to find the offset. To find the back space place a straight edge across the rear of the wheel and measure to the mount pad. The distance equals the wheels back space, which in this case is 6.75”. Multiply the back space by 25.4 to convert the back space to mm (6.75″ x 25.4mm = 171mm).

COPO Camaro

Before the marketing department created a COPO model it was the “Central Office Purchase Order” by which a few dealerships, notably Yenko and Gibb, ordered options not normally available for the Camaro. The Camaro of the 60s could not exceed a 400ci engine unless the COPO loophole was exploited.

Anyone that tells you that no COPO Camaro ever had a VIN nor were they street legal doesn’t know the history.

“Unlike the model built in 1969, the later versions of the COPO are not street legal.”
https://www.gmpartscenter.net/blog/brief-history-of-copo-camaro

LS3 Conversion (76 Corvette)

Anything, used, more than $3500, it’s time to go new.

Leaning toward the Hot Cam LS3 built engine. 480HP, 473lb.-ft.
Chevrolet Performance LS376/480 495HP Hot Cammed LS3
https://www.gmperformancemotor.com/parts/19369333.html

Powerplants I will consider, depending on price:
LS1 Aluminum 346ci 5.7L 1998-2002 Camaro, 305-315hp 1997-2004 Corvette, 2004-2005 GTO 345-350hp
LS2 Aluminum 368ci 6.0L 2005-2007 Corvette/ 2005-2006 GTO 400hp
LS3 Aluminum 381ci 6.2L 2008-2009 Corvette 435hp
LS6 Aluminum 346ci 5.7L 2001-2004 Z06 Corvette 405hp
L92 Aluminum 381ci 6.2L 2008-2009 Silverado Maxx, Denali, Escalade 403hp. This engine shares the same block as the LS3.

2016 RAM 1500 Buildsheet

Equipment Listing
VIN 1C6RR7GT1GS279700
Vehicle Description 2016 RAM 1500 SLT 4X4

Monotone Paint
730 Amp Maintenance Free Battery
Electronic Stability Control
Anti-Lock 4-Wheel Disc Brakes
Prem Vinyl Door Trim w/Map Pocket
Front Height Adjust Shoulder Belts
Supplemental Side Air Bags
Advanced Multistage Front Air Bags
Supplemental Frt Seat Side Air Bags
Carpet Floor Covering
Front & Rear Floor Mats
Driver/Passenger Assist Handles
Rear Underseat Compartment Storage
Overhead Console
215MM Front Axle
3.21 Rear Axle Ratio
235MM REAR AXLE
Conventional Differential Frt Axle
Conventional Differential Rear Axle
Tinted Glass Windows
Tinted Windshield Glass
Rear Power Sliding Window
Passenger Side Sun Visor w/Mirror

1994 Wrangler New Brakes

Ordered brake stuff for the Wrangler. Below is the info on the rear axle so I don’t forget (again).

VIN: 1FMYU24E0XUB76957
Car manufacture date: 1999
Mark of the vehicle: Ford
Auto model: Explorer
Car type: SPORT UTILITY 2-DR
Vehicle motor: 4.0L V6 SOHC 16V
Made in: UNITED STATES
Trim of car: Sport 4WD
Number of identification: B76957
Shift type: 5-Speed Automatic | 5-Speed Manual