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5 cylinder GM ATLAS 3700 build with 4L60e transmission
A to Z replied to A to Z's topic in Other Engines
10-17-2026 More ATLAS 5 banger work today. I went ahead and installed the new starter, and water pump. Cleaned up the bolts to make it look nice when assembled, water pump pulley on and then I got the crank pulley cleaned up and painted. I got the new alternator mounted on a handmade bracket using 1/4" aluminum plate.....doesn't look real good right now, as my Angle grinder died, so I will go back and clean up the bracket so it looks better but real progress on it today. The nuts used as spacers will be filed up and made to look better also. PICS: -
10-11-2026 ATLAS Z UPDATE. CLUTCH AND BRAKE BLEEDING. So, I drug out my Motive Power Bleeder, and hooked it all up and filled it with DOT 5 fluid to "charge" the new brake system, which is all dry. I started with the clutch, which went VERY fast, and It's crazy how stiff the clutch pressure plate is! Then I went to the brakes. It's pretty involved when everything is new, and compeltely dry. So, after playing around for quite a while with it, I then settled on doing it all one step at a time......a bled the master cylinder out with it's drains, both cylinders, then started the process....using the 15 psi, I was able to get the rear brakes bled out, and the passenger front wheel.....but then found the driver's front wouldnt drain unless I pumped the brake pedal AND used the pressure, so something is wrong. I can push the pedal to the floor. not completely dead, pedaled but still...... After getting chat GPT to help me, I went through the line from the brake caliper back step by step and found that no fluid was coming out of the factory port. So, I will have to get a T fitting and go off the port for the passenger front wheel and then it will be like the rear brakes are, both off the rear brake port. VERY close, but challenging. Dot 5, I love the stuff.....it doesn't eat paint, doesn't hold water like dot 3 or 4 does, and for regular street driving will work fine. PICS:
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5 cylinder GM ATLAS 3700 build with 4L60e transmission
A to Z replied to A to Z's topic in Other Engines
10-10-2026. I finished cleaning the block and then painted it silver with engine enamel. Then I pulled the valvecover off, and did an initial cleaning on it. PICS: -
Added an Atlas Z badge to the cover plate on the passenger foot plate. Funny....it looks crooked in the pic, and but straight in person. (shrug). You can tell the foot plate needs to be cleaned.
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5 cylinder GM ATLAS 3700 build with 4L60e transmission
A to Z replied to A to Z's topic in Other Engines
10-08-2026. I got the driver's side cleaned tonight. The oil pan and valve cover will be cleaned off the engine. One step closer to paint! -
5 cylinder GM ATLAS 3700 build with 4L60e transmission
A to Z replied to A to Z's topic in Other Engines
10-07-2026. I had a few moments today, So I took some measurements to get started on the DMZ intake DIY kit. Because of the intake, the original alternator location won't work, So I will make my own bracket and move it down to about the halfway mark. Plate steel or plate aluminum, M10X1.5 all thread screwed in to the threaded holes there, and start drilling holes and get it on there, and then slot holes as necessary to get belt alignment just right. PICS: -
5 cylinder GM ATLAS 3700 build with 4L60e transmission
A to Z replied to A to Z's topic in Other Engines
10-04-2026. I took some time today, and went ahead and removed the wiring harness, the intake manifold and some other parts bolted to the block. The stuff still attached, all the bolts are now broken loose and will be easy to deal with as we go. The parts I removed either got tossed, or put into a pile.....I then cleaned them up and took a couple quick pics. Engine looks a lot smaller once you get all the "junk" off! PICS -
10-04-2026 ATLAS Z UPDATE: Well, I found out the hard way that my water methanol container had a crack in it. I ended up having to get a replacement container and a new braided line from it to the pump. I smothered the thread in pipe dope and assembled it. Then I got the whole deal back together. After that I began the install of a gas vapor filter, I went with the 8 inch long version. Just need some hose and that will be done. I spent the rest of the day on other projects. PICS.
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5 cylinder GM ATLAS 3700 build with 4L60e transmission
A to Z replied to A to Z's topic in Other Engines
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5 cylinder GM ATLAS 3700 build with 4L60e transmission
A to Z replied to A to Z's topic in Other Engines
I went ahead and worked on the 3700 today. I removed the balance shafts, and used the Badlands Industries delete kit. I then cleaned up and re-sealed the rear plate, installed the flex plate with a few bolts in case I want to do a compression test later, and then got it on the engine stand. Int he pics you will see the 4 speed automatic trans for it, a lockup unit GM "4L60e", that I will rebuild with all the tough parts and probably a 3000 RPM stall, unsure at this point. PICS: -
A week or two ago, I began an engine and transmission project, thinking there may yet be another rip snorter in my future. Maybe a B210 or maybe a Roadster? I bought a ATLAS 5 cylinder engine, it's a 3.7, or 3700 cc inline 5. lengthwise about the same as a 2000 roadster engine, but yes it is taller. Like my 4200 it is all aluminum, 4 valves per cylinder, dohc, with VVTi on the exhaust cam. I additionally got a 4 speed automatic for it, a GM "4L60e", that is a lock up setup, where there isn't a lot of slush and stuff. I have already gotten some parts for the 3700, and I will post updates on here.
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09-27-2026 ATLAS Z UPDATE: Another day of catching up on small items. I went ahead and set up the front end for to do the alignment maybe next week....then I went to the back of the car, tightened down the bolts for the differential, checked the rear brake adjustment, and then finished wiring in the engine sensors to the gauges. I installed a couple emblems on the hood corner and on the decklid above the lock area. I cut a plate and painted it and fit it over the spot on the passenger floor plate to hide the mounting bolts, I will put an atlas Z emblem on there later. I mounted the fire extinguisher to the driver's side foot plate and set it in there for now, I installed the rubber strips I got to cover the window slot at the top of each door, and as you can se from the pics, they need a bit more work on them to finish that but got the ball rolling. I filled the water methanol tank only to find it has a crack and needs to be replaced, so that is added to the list. I spent yesterday on my 240Z, so today was a day to try and get more little nagging things done. PICS:
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09-20-2026 ATLAS Z UPDATE: I spent most of the day going around fixing connections and getting lights that weren't working.....working. I managed to get it about 99% done. I then cut up and modified the 16X16X4" deep aluminum cake pan I bought to work as a cover for the electrical, and once fitted, I painted it gloss black and added some clear coats. In the pics the wires behind it can be seen....because I have to zip tie them back up after doing my splice repairs, but it fits well. Lastly I started on the 3 gauge sensors in the engine compartment that need to be lengthened to work. I also tried to start the engine.....have plenty of fuel there, so more tracing of wires to find out what is keeping it from starting. PICS
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09-19-2026 ATLAS Z UPDATE: I had to replace the O ring around the thermostat, so I got that fixed and got the antifreeze poured back in. Then I did some preliminary electrical checks. a few little things not quite working, so I have to work my way through connections, but 90% is working!! Charging the battery back up to 100% and will try for a start tomorrow hopefully. Then I worked on installing my rear polycarbonate wear "window". I had to trim here and there, and then by trial and error had to keep playing with it and modding here and there but got in finished. in the pics, you can see the small pieces of rubber I installed as a cushion for the window. I got the rubber from Amazon....I can provide a link if you want, jsut ask. God willing I can get out there tomorrow and do some more. PICS
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Fast Floridian's 240Z Track Build
A to Z replied to FastFloridian's topic in S30 Series - 240z, 260z, 280z
What's the cubes on your windsor V8? Manual trans? I hope this car hits the street as well as the track!
