Ol' Green '70 GMC C2500 Father/Son

[clay68c10]

I like your aux gearbox idea, definitely unique.
Have you ever seen a Ranger unit available used? Probably rare but it would be worth keeping an eye out for one.

A 400 with a mellow cam and Vortec heads would be a great choice for what you're doing.
Or an 880 roller block based 350/383.

[connorm]

Originally Posted by clay68c10

I like your aux gearbox idea, definitely unique.
Have you ever seen a Ranger unit available used? Probably rare but it would be worth keeping an eye out for one.

A 400 with a mellow cam and Vortec heads would be a great choice for what you're doing.
Or an 880 roller block based 350/383.

The Ranger's seems fairly hard to find. The aux gearboxes are also somewhat hard to find. I think most of it seems to be that people don't really know what they are and there's not much value to them for most people. I also live in the midwest and we have more 2 speed axles in the medium duty trucks, rather than aux gearboxes. I did find a 6041 4 speed Spicer unit on Ebay. It's about 1k but its in Montana so shipping is around $500-600. I am going to keep looking locally.

A 400 with an rv cam, decent heads, knock off ZL1 intake and quadrajet and HEI is what I'm leaning towards now, but that's a ways off. The 307 just keeps chugging along. And doesn't have enough power to hurt anything. I am planning on doing "supporting mods" before I do an engine swap. I'm just trying to keep that in the back of my head.

[connorm]

Well, I'm overdue on an update on this. I ended up buying a new daily driver so that has taken up some of my time.

https://67-72chevytrucks.com/vboard/...=1#post9368842

I do have Ridetech shocks on this truck now. These are not the shocks that you would get if you called and ordered shocks for a coil sprung 2500. These are threaded bodies, aka coil overs or shock waves, with no spring/air bag. Typically smooth bodies, aka shock replacements, would be used. There is no functional difference between the two, although the valving is different.

On the front I really needed a 4.1" travel but I couldn't find one laying around so I put a 3.6" travel with a longer eyelet to bring it back to the right travel range. As you can see with the rubber bumper I am running out of travel so I really need to buy a smooth body that has the right travel. This will get me the better valving and the correct travel.

On the back I have a 6.9" travel with a 3.7" eyelet. This is a fairly common set up and I have no reason to upgrade.

These are single adjustable and it is amazing how a single rebound adjustment can affect the ride quality of a rusty old 2500 truck. I have messed with the tuning and a little bit and will continue to. When I really settle on a set up. The link below is to the coil overs and replacement shocks. Let me know if anyone has questions on any of this.

https://ridetech.com/product/coilove...le-adjustable/
https://ridetech.com/product-categor...ch-1-5-shocks/