rear spring
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Joined: Mar 2008
Posts: 576
Likes: 3
From: Muskegon MI
No, the mounting is different. The C4 is designed to be mounted to the aluminum rear ends (36 or 44). The 78 has a 2 1/2" spring mounted to the cast rear end cover, different bolt pattern altogether.
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Joined: Jan 2010
Posts: 71
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From: Granger Ia.
Thanks, my 78 has a heavy duty 7 leaf spring in it now, it rides very stiff and I want to get something softer. Does anyone now what # rating composite spring I should use for a smooth ride?
Supporting Vendor
Joined: Mar 2008
Posts: 576
Likes: 3
From: Muskegon MI
I recommend a 315# or 340#, both will give you a better ride than what you have. Make sure you check the mount bolt size and current spring width.
