Hey Tim, Sorry didn't look at this thread for a while!!
lets see..
1- fuel tank / system, I like the idea of using the p30 tank
Our 93 blazers have a 30 gallon and the p30 tank was a 40 gallon (I ended up buying one for a 94 diesel blazer -30 gallon..no emission crap on it) 40 was too big.. but used the fuel pick up/sender out of the 40 gallon.. same depth?! got lucky!!
2- 4bt to transmission / starter, if I got it right, you used the 4l60e torque converter mated to a turbo 400 flex plate. Is that right? Which starter did you use?
I used the auto chevy adapter that came with the van (t475 [straight cut geared t400]) and got a low stall converter made for the gas 4l60e.. the bolt pattern on the 4l60e(10.5") and t475/t400(11.5") is different. I got a ring that had 12 holes in it to bolt up to the cummins wave ring (6 bolts at 10.5 and 6 bolts at 11.5) all grade 8/12.9 hardware. The guy that made the ring is Daryl (he has a 700r4 in a Durango).
3- motor mounts, can you buy the parts that are bolted to the block ( shown in pictures 3 and 4 in your album). Are they what you said came from a 4bt in a Ford application?
Yes.. but easier to find them used! The actual metal brackets you can get if you buy a ford stepvan or find on ebay. I have found theM here: 262-522-6644 (some company cummins tech people told me to call to find them..they had them.. I want to say they wanted 300 per side

the part numbers are: 3915651 3915655
4- the hydro boost for brakes, Can you buy one for a chevy diesel that will bolt on or is it better to use the one off of the p30?
Better to get the one meant for a 94 diesel blazer or suburban around those years. 88-94
5- the oil pan / height issue, I prefer not lifting the Blazer. Can you buy an oil pan that is already fabbed to fit "around " the front differential? What are the best options to keep it as close to stock height as possible. Could I get by with a 1 or 2 inch body lift>
I don't know of ANY place that has a modded pan laying around.. people would probably pay good money for it though

Check out B1jetmechanic's pics.. he decided to go that route and I believe he yanked it back out to mod it again to the perfect clearance on it? You have to go the suspension lift route or mod the pan to clear the front diff.
Thanks for your info. By the way. Is there a difference in a 4l60e and a 4l60?
e just means its electronically shifted/controlled. I heard a rumor that gm/dodge/ford switch the names of the same trans to avoid huge lawsuits (ie. e4od aka 4r100 - 700r3 aka 4l60 [not e though] and the dodge guys know more about the 47 46 518 deal..!
I thought 93s had the 4l60 that was a stand alone tranny and would not need a remote sensor. Am I wrong? What do I need for this tranny to shift right with the 4bt?
The stand alone might work IF you got one from a 93 diesel suburban...BUT the shift points will still have to be lower then the 6.2 or 6.5 because the 4bt makes its power at a LOT lower RPM (meaning you'd have to pull the chip and get a electronics degree just to figure what to change and re-flash the gm chip. I went the TCI controller route because I can get it going on the fly and make changes instantly. Didn't want to have to invest in a prom flasher, uv eraser, software, experience, and mostly TIME...blah blah blah.. life is too short!
my email is
[email protected] if you want to get a hold of me.
I'll chat with anybody who is into 4bts. Chris