Front coil spring swap w/ from 78Z to 68 - Team Camaro Tech
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post #1 of 2 (permalink) Old May 5th, 01, 06:04 AM Thread Starter
Join Date: Oct 2000
Posts: 13

After almost 6 months of looking I finally found and bought the 68 Camaro I wanted. The previous owner lowered the vehicle about 2 inces in the front which has lead to way too many clearance problems and I want to return it to the stock look. Does anyone know how different the springs in a 78Z28 are from the stock ones in a 68 small block?

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post #2 of 2 (permalink) Old May 5th, 01, 09:08 AM
David Pozzi
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Join Date: Nov 1999
Location: Central California, USA
Posts: 10,140

The springs are too soft in rate and probably the wrong height.
The later spring is also a larger diameter.
early was 5" OD, second gen was 5.5" OD.
The best drop-in stock height spring is a Moog first gen Z/28 spring #6308, it's around 390 lbs rate, stock was around 327 lbs.
A 550 would be ideal for good street handling, 600 to 700 for wide tires and agressive driving/track or autocross.
You could also buy a plastic spring seat spacer that would raise the car back up. It would need to be approx half the thickness of the needed height change due to leverage over the spring.
So, for a 2" height change, a 1" spacer would be needed. This is just a guess.
I'd really recomend a stiffer spring than stock if at all possible. Also good shocks and swaybar.

Check my web page for First Gen Camaro suspension info:
David's Motorsports page
First Gen Suspension Page
67 RS 327
69 Camaro Vintage Racer
65 Lola T-70 Chev 350
Can Am Vintage Racer

[This message has been edited by davidpozzi (edited 05-05-2001).]
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