4 link ?
 

i have a 1970 lwb gmc with leaf i puttin a 4 link in it the lower bars gonna be mounted in place of the leaf spring http://i261.photobucket.com/albums/i.../IMAGE_127.jpg

the space from mount to the axle is about 24 inchs would it be better if i moved it up 2 say like 32 inch's

Re: 4 link ?
 

24" should be fine,...

Re: 4 link ?
 

24" will work but longer bars should offer a better ride.

Re: 4 link ?
 

I am getting ready to set up my 4-bar as well. I had a question on the fabrication side of it though. Do I need to pull my axles before welding on the axle tubes? or is it common practice to burn in brackets with the axle and fluids still in the housing?

Re: 4 link ?
 

This is one of those things where if you ask 6 different people, you'll get 6 different answers (opinions). You can definitely weld w/the axles in place & the housing full off lube.

I would make sure to minimize heat soak & change the fluid when your done for sure.

Re: 4 link ?
 

Thanks,
If it's reccomended to change the fluid after welding any ways, then I'll probably drain it first, and if I'm that far might as well pull the c-clips and pull out the axle. (need to look into c-clip eliminators as the BB like to rip stuff up with stupid amounts of torque)

Re: 4 link ?
 

A few spot welds where the axle tubes seat into the center section doesn't hurt either as long as the heat isn't excessive.

Re: 4 link ?
 

I was looking ahead at my 4-bar some more and curious about a few angles that the coil overs need to be set up at.

1. What angle in reference to the frame rail is ideal?

2. What angle in reference to the tail gate is ideal?

As of now I am trying to sort out the truck so that it is running about 35* anti-squat for cruising and road races, and 100* anti-squat out on the strip (maybe more or less if any one has a better suggestion). I am not spring savy enough to know the exact angles. I understand that a stock truck runs about a 30-45* angle with the shocks relative to the tailgate, but the shocks are vertical, I am not sure how a coil over effects the sum of the forces involved. Thanks for the help.