AMK521

I might have left out a relatively important detail. I got a frame from a 79 620. Well the front half of a frame haha I'm doing a frame off and just using the front portion from the 620 to get the ball joint disc brake front end. So I don't seem to be having any crossmember issues at this point. I thought about flipping that drag link but the taper on the ball joints would be wrong. Don't people have issues with that?

Ok so if there is a thread on this already feel free to just refer me to it but I didn't see one so here goes. I've started a ka24de swap in my 521 and the only mock up issue I have run into that isn't really easily overcome is the steering and the oil pan. Do I have any rear sump options or do I have to make my own pan?

I think the math there is right but here's the thing. I know a big cam can be bad for low end but I'm comparing an 2200 lb truck with an l16 to a ka 24 which has way more torque to begin with and I don't have that big cam so I think I'll be good on torque and I'm not planning on driving around at 50 mph. I'm aiming more for being able to cruise nicely at 70-75. An engine doesn't necessarily get better mileage tho just because the rpm are lower. Cruising at an engines peak power ( or just below) is often times the best so where is the ka's peak power is the good question right? With my tire size and the overdrive behind the ka a set of 3.54's lands me at about 2750 rpm at 70 mph. That's about right isn't it?

Very helpful information, thank you! The ka I'm going to install has a few mods, I pulled it out of my buddies 69 510 and when it was in his car (which had a Subaru lsd with I think 3.70s ) he could burn the tires through 3rd and chirp 4th gear so I was figuring the 3.54's datzenmike mentioned would be sweet in that little pickup. Traffic in Washington moves along at 80-85 all the time so.. Any thoughts?

I have a 72 521 and I'll be swapping a ka24de soon so having a 5 speed will help but I plan on going on quite a few road trips in the near future and would love it if I could find some substantially taller gears. If I'm not mistaken I should have 4.88's at this point. what are my options?