Re: 400 motor swap, dipstick position change, help!
I swapped a 400 block into my 92 4X4 a couple years ago. I used the 350 heads and stock manifolds with all the original accessories. The 400 dip stick cleared just fine. I would try a test fit before the engine is installed into the truck. If by chance it doesn't fit, you can fab a dipstick by brazing a bung into the oil pan, insert a 45 or 90 degree angle fitting for a flare tub. buy a length of line, and form it to fit where you want it. Leave some extra length on the tube. Once the motor has been started and run, insert the dipstick in the tube, and measure how far the oil level is from the full mark. measure this length on your tube and cut it off. Instant calibrated stick! Good Luck!