No Short !!! I even took a closer look be for I took pic, @ first look thought it was a Medium, There are 3 length Short Med Long
This is definitely a long water pump, this setup was used all through the 70s on most Chevy small blocks. The short uses a driver side alternator or generator mount. There's no way to fit an alternator in front of the head, and have it work with a short pump. This is the short pump, the generator or alternator hangs off the driver side manifold. I've never heard of a medium length water pump. What was it used on? or is it some aftermarket thing?
Its wright against the timing cover , It just did not come with deep water pump pulley , truck motor, i pulled out of a original c10 about 90 except for aluminum intake , I will check again but not a Long , about 1/8 inch gap between propeller backing plate and timing cover, but I will check Again Do not want to post miss information
it does not have flat crank pullings or real deep water pump, that why alt is in location it is , its a 400 71 out of c10 There were several different short water pump set ups, There where mediums used in some trucks, some off topic mid 70s big Gms cars and Industrial, But again I will take another look !!!
Yup when they move the alt to the front of the head, they used a long water pump. On the short pump the back of the pump almost touches the timing cover
The only short pump setup I've seen is the one in my picture of the early engine. The long one had a few different setups into the 1990s, the one you pictured is the 69-76ish setup. After that they changed the power steering pump mount, but the alternator bracket and pulleys were the same, through the mid 80s. Later they went to serpentine belts, reverse rotation pumps, and cast aluminum brackets. The big giveaway is that the short pump uses a deep water pump pulley, and a shallow crank pulley, with the alternator/fan/water pump using the rear groove. The long pump uses a shallow water pump pulley, and a deep crank pulley, with the water pump/fan/alt using the front groove.
Off topic Have any seen a real long tail 350-400 transmissions out of station wagons Chevy Buick Pontiac OldsMobile much longer then what most call a long tail ?
Sorry """MUD ON MY FACE!!!"" My intentions are not to mislead, Greasy timing cover & mug goober across back of propeller plate, thats why little gap , knock debris out , my pinky barely fits between pump and timing cover, Now Im wondering If this is what typically is called a long water pump, I am sure I have seen in my hands small block Chevy water pump with more then a 1 inch space between cover & pump , Like most here, Worked @ auto parts store ,me 84-90 , I know I seen 3 different SBC water pumps , because the customer (85-86)was upset that he received the wrong water pump and it was a lot longer than what we normally sold , & V belt set up . We where able to get correct pump had to order ,,, So now I wondering is it like the Transmission that were real long and rarely I seen, can you help with that Squirrel ??? What Im asking is my terminology wrong? Water pumps That a Medium to me ,to Others is a long?
I don't know of any medium length water pump. Short was used on all of them through 68, and trucks through 72, and vettes all years. Long was used starting in 69 on most cars, 73 on trucks.
I Do not think I have seen / knew what a True Cadillac bell locks like. I cleared out a small junk yard @ a gas station in 86 We grabbed all was there in Motors & transmissions , and other parts , Over 60 transmissions & 3-4 speeds most gms brands About 10 ish fords , 30 ish sbc , about 7 bbc ,8 ish chevy straight 6 ,& 10 ish Fords sb & bb 1 was a cobrajet 429
Ebay has these available...https://www.ebay.com/itm/254533540459?hash=item3b43619a6b:g:Bp4AAOSwiI1eYxVs
A large drive pulley with small driven pulleys will make the water pump spin faster and the alternator will charge more at any given rpm. When I remove pulleys, I make sure to check straightness and the insides are clean. I run them over my wire brush / grinder.
@SDS try INDY auto parts rt1 Lynnfield, Ma. They usually have the pulleys in stock. If you can wait, the swap meet at NED in 2 weeks will likely have what you need
Excellent - I think those are most likely the same ones that Speedway and Summit sell for more $ - thanks!
Here is a set with alternator brackets for a great price i think....https://www.ebay.com/itm/264761250315?hash=item3da500120b:g:eNcAAOSwHQVfWaDc&_trksid=p5731.m3795
Take the time to check pulleys for run out side to side and hop. Originals usually get thrown in a box for years, new ones are likely made off shore.
Something I haven't seen mentioned here about the high right side alternator mount in a single belt application is the fact that there is very little belt wrap at the fan pulley. With this same setup, every time I started the car the belt would squeal for a second until it got the water moving. Couldn't get the belt tight enough to stop it. I solved the squealing when I added power steering and a second belt and incorporating the fan pulley into the power steering belt. I know that doesn't help your situation. Just be aware there can be a problem'
Report: Thanks to choptop40 for the recommendation - the chinese ebay pulleys came and they are great, nice powder coat & spin true at an impossible to beat price. I haven't run the engine yet, but there's nothing left to desire...
Yeah, that is certainly a concern, I'll pull the alternator all the way over to the right side, so it puts as much of the belt around the pump pulley as possible. Now, I get the fun of dealing with the brain-dead at the part store to try and find a belt by length... "What year, make and model?" Me: Uh, that's irrelevant "my computer won't allow me to look it up by length" Can't wait
I have had two sets of Transdapt short pulleys that were so out of round they would hit each other when turning.
As far as belts go, how far do I want the about to sit down in the v groove on the pulley? If I measure across the lips at the very top of the v-groove, it's 3/8 of an inch. If I put a piece of string all the way around everything, I get 48 in but that's all the way at the bottom of the v. I've always had some sort of belt to start out with for reference, but this time I'm starting from scratch. Any rule of thumb here?
Watching......tried the top version, and well, wasn't aesthetically pleasing. This is with a NO bolt hole 461/462 head. Came up with my own, and works just fine...... Experiment a lil. Disregard the colors. And- that's why I hunted for pulleys way back when.... and have a few sets for SWP.
Belts are made by size. If you have an old one that’s too long, fit it, cut it and measure the length. Google belt sizes. Then ask for an A30, etc. what you will notice in belt size charts The number after the letter does not match the length. Just went through this recently on my tractor, couldn’t read any writing on it and didn’t have time to look and wait for parts for a 60+ year old model. So I measured it, compared to an online chart and NAPA had an A-whatever in stock. Beats buying several different sizes and returning what you don’t use
The single groove pulleys I have are typical for a 66-67 Camaro/Corvette, etc. 327. I looked up belts for those cars and found that it should take a 7/16 belt - not so. Sits way to high i the pullet groove on my new pulleys and the alternator pulley. I then tried a 13/32 belt, still sits up too high, to is proud of the pulley lips (see photo). Seems to want a 3/8' belt - those don't seem to exist. Anyone have insight?
7/16" belts usually work on the original pulleys, but that alternator pulley is like most rebuilt alternators these days, it's not an original pulley, it's a replacement. you can tell because it's machined, the originals were stamped. I dont know about the reproduction crank/fan pulleys.... I'll get some pics of a belt on original pulleys in a few minutes.
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