I am installing my comp engineering coil over shock kit and the instructions have no mention of what the eye to eye length should be when installed. Called Moroso and they said probably somewhere around 13" or 14". What kind of answer is that? Do even want to get into what the tech guy from summmit said. Should the shock be setup to where it will travel equal distances up and down? This is the shock. Competition Engineering 2051
Competition Engineering 2051 $225.95
Estimated Ship Date: Today




Brand: Competition Engineering
Product Line: Competition Engineering Rear Coil-Over Shock Kits
Part Type: Coil Over Kits
Part Number: CEE-2051
Suspension Height Adjustment: Stock
Coil-Over Kit Position: Rear
Shocks Included: Yes
Adjustable Valving: Yes
Internal Design: Twin-tube
Gas Charged: No
Number of Valving Selections: 3
Extended Length (in): 16.410 in.
Collapsed Length (in): 10.440 in.
Upper Mount: Eyelet
Lower Mount: Eyelet
Shock Body Material: Steel
Shock Body Finish: Painted silver
Bushing Material: Hard durometer rubber
Bushing Color: Black
Coil-Over Springs Included: No
Crossmember Included: No
Adjustable Mounting Bracket Included: Yes
Hardware Included: Yes
Welding Required: Yes
Quantity: Sold as a kit.
Notes: 12.00 in. x 2.50 in. ID coil over springs sold separately. Choosing the correct spring rate based on specific rear-end weight is critical to weight transfer and improved traction.

Coil-Over Shock Kit, Twin-Tube Shock, Universal, Drag Race, Rear, Kit

Check to make sure this part fits your application Customize your rear suspension.
These universal kits from Competition Engineering come with 3-way adjustable shocks, upper mounts, and adjustable lower mounts. They work with a variety of applications, including drag race, Pro Street, street rods, and kit cars. The upper mounts are finished in black oxide for welding. The lower mounts have 6 in. of adjustability. The spring perches are finished with a zinc and yellow chromate plating for corrosion resistance. They're designed for use with Competition Engineering rear coil-over springs; replacement shocks are sold separately.

Instructions

Call comp and get the number from the manufacturer

Did that. They are the ones that gave me the 13" or 14" guess.

Rule of thumb is shock should be setup where the shock has 60% of its stroke for extension and 40% for compression.....so, in your shocks it would be this:

16.4-10.4 = 6" of stroke

60% of 6" is 3.6" - approx extension

So, at ride height, your shock eyelets should be a little less than 13"

I think i purchased the same kit. My problem was that it used 12" springs and the shocks extended to 14". Every time the car was jacked up i had to hand fit the spring back into the spring seats. Comp.eng. was no help. I bought 14" springs to solve that problem .Spring rating will set your shock ride height. Best way to find that out is weight the back of your car before ordering your springs.I think summit has a chart for ordering.