Help with 70 cpp front suspension on a 71

[BlueyC10]

Recently purchased cpp tubular an arms, drop springs, shocks and 2 inch drop spindles for my 71 from a friend who used them only for a mock-up. What I just found out is 67-70 trucks are different from 71/72 trucks, what problems will I run into installing these parts?

I’m considering buying the cpp front linkage kit to make everything fresh, but what kit should I buy 67-70 or 71/72?

I also need upper ball joints for the arms, and have no idea what ball joints to buy.

I plan to call cpp to bother them with these questions, but figured I’d drop in here to see if anyone can help me
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[lolife99]

Balljoints and steering component need to match the year spindle you are going to use.

[BlueyC10]

Originally Posted by lolife99

Balljoints and steering component need to match the year spindle you are going to use.

Ok. So if I’ll have to order the 67-70 cpp linkage setup, and I should have no issues with fitment ?

ball joints I’ll have to match those 63-80 spindles.

How about my existing hub and rotor, will they work on the new spindles I have ?
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[lolife99]

Originally Posted by BlueyC10

Ok. So if I’ll have to order the 67-70 cpp linkage setup, and I should have no issues with fitment ?

ball joints I’ll have to match those 63-80 spindles.

How about my existing hub and rotor, will they work on the new spindles I have ?
Posted via Mobile Device

Existing rotors will work fine.
Balljoints need to match the year of spindle.
If the spindle is a 63-70 conversion spindle you need 63-70 balljoints.

The outer tie Rod needs to match the year spindle also.
The problem is the 63-70 outer tie rod is 5/8 left hand thread.
The 71-72 outer tie rod is 11/16 right hand thread. The taper in the spindle is also different.
You can with buy all new steering for a 63-70 truck or use aftermarket tie rod adapters that are threaded 5/8” on one end and 11/16 on the other.
The 63-70 trucks use a different center link than the 71-72 trucks.



Look at the link in my signature.
Lots of info there.

[lolife99]

FOR YOUR SPECIFIC PROBKEM,… ie 71-72 truck trying to run 63-70 spindles,…
You need either:
1) 63-70 centerlink and 63-70 inner and outer tie rod to go with your 63-70 spindles.

OR

2) use your existing 71-72 center link and run your 71-72 OUTER tie rods at the inner location and connect them to a 63-70 outer tie rod (with the above mention conversion tie rod sleeve) to connect to your 63-70 spindle.

OR BETTER YET


3) Buy 71-72 drop spindles.
This will allow you to use all your original steering by swapping the balljoints in the CPP control arms to 71-72 balljoints.

[BlueyC10]

Wow keith thanks for that knowledge. The way I look at it is I’ll buy a complete 67-70 steering kit, as cpp sells the kit (part #6770DSLK-CP-C10) for $329, and 71/72 spindles are the same price, but I’ll still be stuck with my old steering linkage. So this way I’ll be all new linkage and everything.