This turned up at a place local to me, and I don't know if it's available to buy or not, but I guess I never saw one "in the wild" before. Is this supercharger something desirable for hot rodding? I know there are certain cases that are very desirable and others that look similar but are basically useless, curious to know what this one is. If it's something good, I'll inquire about it and if it's available and reasonable, I'll buy it, just because it's neat. Just want to educate myself before I do.
Simple math. 71 series Detroit Diesel engine, 4 Cylinders - Must be a 4-71 Blower. Depending on the injectors, that set up is probably good for a 150 hp of screaming Jimmy two-stroke fun all in a tidy 1200+ lb package.
There's more to it than just bolting one down on a manifold, isn't there? I don't know details but I thought some of the internal seals, etc. had to be replaced to make them suitable for use on a car.
Lots of mods starting with the case, end plates, usually bearings. If it's free, it's maybe. It depends on whether the rotors are straight and not gouged.
Good info, I was able to read up a bit on 4-71 blowers and also look up what random used ones sell for. If it's available, and if the price is right, and if it's not frozen up or*****housed inside are the questions to get answered from here. If it's cheap enough I'll get it either way.
When it come to Converting do your research if you're not able to do yourself maybe it's cheaper just to buy New / converted 4:71 $1,800 ish No drive Nor Pulleys, intake etc. If you have tools or access to you can mount a blower on your lawnmower tractor if you wanted to.!
The very first thing to do to that blower is get rid of that GODAWFUL orange paint, then if it's junk it will be ready to be a wallhanger, and no, that is not Chevrolet orange.
Convert it yourself. Its not hard to do. If you are on a budget, a 4/71 is easily adapted to a 4 barrel intake. Get some pullys and a snout at a swapmeet and go for it. I have many cars with superchargers on them. Every one of my cars are done this way.
Hopefully the case and rotors are in good condition and can be used as is. You ought to be able to get it for core price, like $300 I'd say.
Looks like a 4-71 industrial engine. The 4-71 blower makes a nice mid-performance piece on a SBC or SBF. But as mentioned, not cheap if you pay to get it all done. But it's not rocket science and well within a DYI project with the right info. Lots of info on here. https://www.jalopyjournal.com/forum/threads/4-71-score-school-me-on-blowers.1338637/#post-15650871
Hello, When my brother and I went to our local diesel motor showroom in Wilmington, near our Westside of Long Beach House, there were plenty of complete motors to see. We were in the market for a 671 supercharger. PCH ran through Wilmington and the cross streets all led to the nearby Long Beach/Los Angeles Harbor where it was diesel truck heaven. All trucks used to haul freight from the huge boats to inland sources. The shops on PCH were the go to place for all motors, repairs and new parts. We were shown all of the showroom motors from small to large. We stopped looking at smaller motors they had out in the back yard. Those were similar to the one in the photo. They had 471 superchargers attached and were smaller 4 cylinder motors. Jnaki We knew we had to have the paint removed, via paint stripper or sandblasted to get to the silver finish of the superchargers. Then we also knew we had to get the supercharger inspected and rebuilt for race specs and at the time, no other place was like Reath Automotive. Luckily, we chose a painted one, but the salesman wanted to show us a natural surface 671 on a showroom motor. It was the showroom display motor, among other painted versions. The silver surface stood out among the painted motors. That was the point. But, the salesman said we could buy the silver one off of the display. Technically, it was new, but he could not sell it as new. So, he said if he took it off, he could give us a great price for a “used” 671 supercharger. The price fit our budget and we were happy to take it with us, as soon as his mechanic took the supercharger off of the painted motor. He was going to replace it with a new polished version that was at the detailing/buffing workshop in the back room. We were happy, but knew we had to have a professional shop go through the whole blower. The Reath Automotive shop did just that and we ended up with a brand new 671, now fully race spec built version for our new 292 c.i. SBC motor, with new blower spec parts we put together. We had the #2 Isky-Gilmer Belt Drive kit that came out to the general public in the spring of 1960. Note: If the 471 supercharger is to be used, one needs to take it/send it to the local supercharger shops. So Cal has two great shops that have been in business since the early days of drag racing. (Don Hampton blowers and Mert Littlefield superchargers.) But, there is Dyer’s Blowers in Illinois, closer to your house. YRMV
The Jalopy Journal
