Progress! I took a day off from working on the house, I needed a real break from it, so I went in the garage and put most of the L31 short block together. I started by spending most of the morning cleaning up the block, it had been sitting in the garage for a while, and was pretty dirty. I ran compressed air through all the oil galleries, and bolt holes, and coolant passages, then I ran a tap down every single main and head bolt hole to chase the threads. it took me several hours to get it done. then I polished up the journals and rear main seal of the crank and dropped it in.
please excuse the mess, one day I'll build a proper shop with a clean room for stuff like this...
then, I rammed the pistons in, put the cam in, and hit my first SNAFU... Ages ago, I ordered a timing set for this engine, when it arrived, I put it with the timing cover, but for some reason, I removed it from the box and tossed the box, I put the lower sprocket on the crank, and went to install the cam sprocket when I realized something was terribly wrong... looking back at the order I had placed with Summit, I ordered a step up from a stock replacement timing set for the L31, what I had in my hands was for an earlier smallblock with a flat tappet cam and not a roller cam like the L31 has... $#!+ I had no idea where I put the original gear, or if it would even work with my new timing chain and lower sprocket... I looked all over, didn't see it, then I remembered some of the parts were on the cart my Ultrasonic sink was on, I looked, and there it was! I compared it to the gear that came with my kit, if there are cut different, it's well beyond what cam be seen with the naked eye, but it had the right bolt pattern and offset for the roller cam's thrust plate to clear.
some crappy pictures of the two sprokets
I thoroughly cleaned the original gear, and put the timing set together, then I slipped my EFI Connection 24x wheel on, I'm setting this up with a DBW P59 PCM, because I'm some kind of masochist. I already have most of the parts, and it will make the 4L80E upgrade a little more streamlined.
tomorrow, I want to get the rear main seal and timing cover, oil pump, and oil pan installed, then the short block will be complete. I would be surprised if this wasn't double the power of the stock L05 TBI engine when I'm done, not that I'm looking for massive power, but I do want to be able to safely pass someone in traffic, or merge onto the interstate without having to floor it.
"I am not what you so glibly call to be a civilized man. I have broken with society for reasons which I alone am able to appreciate. I am therefore not subject to it's stupid laws, and I ask you to never allude to them in my presence again."