Spent time with family over the holidays and got more work done on the truck. First order of business was un-mucking up the front suspension.
The new upper mounts appear to be much more appropriate. I have a full range of camber adjustment available to me now. With that completed, we stabbed the engine and transmission back into it. My goal was to get the bottom of the truck oil pan just above the bottom of the suspension cross member. I had two reasons for this- I didn't want to buy a different oil pan, and I figured that the higher the motor sits, the easier it will be to have a straight run from the steering column to the rack. Most people with these trucks and LS engines end up with three joints and a rod end support, which just seems like too much complexity and potential for weird steering issues.
I used a plasma cutter and spent a lot of time trimming away bit by bit until the engine was close to level, about a half inch from the firewalll and at the height i wanted. These trucks have a flat floor with with a huge access panel originally, so i just had to trim away at the lower firewall and the floor pan area under the seat. In the photo below you can see the amount I had to trim compared to a photo of the stock replacement pans. (Photo from a Lowrider mag tech article).
At this point we played with a couple of styles of manifolds and the location of the steering column (photo above is after we set the column location). I had the stock Vortec truck manifolds as well as a set of LS1 Corvette manifolds. The Corvette manifold was supposed to be very similar to a block-hugger center-dump style and clear the steering shaft if you cut it where the downpipe starts and angle it in. I used some wood dowel to mock up the steering shaft and cut the manifold, but it still looked way too close for comfort. i think it could be done, and may be an option in the future, but we ended up mocking everything up with the rear-dump truck manifolds. I had to kick the bottom of the column down and to the driver's side a little bit, too. The slight angle of the steering column isn't noticeable to me while sitting in the truck. I ordered a Trailblazer SS manifold, as they tuck even closer to the block in the rear and should easily the clear the steering shaft, and may allow me to move the colum a bit back toward it's original location.
Once that was set, i trimmed the frame-side of the engine mounts and my talented fabricator brother welded them in. He also welded in a steel shaft between the steering joints.
We built a simple transmission cross member using a stock rear rubber trans mount and some round tube and I mounted the under-floor brake pedal assembly to measure for clearance. I'm not sold on using it yet but I need to do some research. It takes away a lot of room that could be used for routing exhaust and means there's a hole in the floor for the pedal arm.
I also mocked up the rear wheels to measure for spacers, since the Explorer rear end is a little narrow, and i didn't want a shallow backspace on the wheels.
I plan to weld clips to the wheels and try to find some similarly-patina'd stock hubcaps to match the one remaining cap I have from the spare.
Last we put on the front clip to make sure everything cleared the inner fenders and put it away till summer.
The front wheels were connected to the steering wheel for the first time in 10 years as we shoved it into the back of the barn. Now onto planning for the summer visit...