25 May 07, 07:15 am
You should get more than 4" of lift with the shackle flip. Measure the current shackle eye to eye and multiply by two, you should get between 5 and 6 inches of lift. Kev put a homemade shackle flip on his 74 if you'd like to see what it did for him. Ryan (AK20) put the ORD system in his rig as well if you'd rather check that one out.
The 6.2L Diesel only weighs 700 lbs, more, but not tons more than a small block and much lighter than a big block. When I swapped a 350 for a 6.2 in my 85 Burb, I didn't change the springs and the ride height stayed the same. The 91 Burb uses the exact same spring pack from the factory the 85 did and it had a 6.2L stock. You don't need bigger springs up front.
I'd look at Kev's setup on his 74, as it runs 35's and is essentially similar to what you want to run. If you are gonna pull, stick to 35's or smaller. Less tire float while towing that way.
The 6.2L Diesel only weighs 700 lbs, more, but not tons more than a small block and much lighter than a big block. When I swapped a 350 for a 6.2 in my 85 Burb, I didn't change the springs and the ride height stayed the same. The 91 Burb uses the exact same spring pack from the factory the 85 did and it had a 6.2L stock. You don't need bigger springs up front.
I'd look at Kev's setup on his 74, as it runs 35's and is essentially similar to what you want to run. If you are gonna pull, stick to 35's or smaller. Less tire float while towing that way.
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