I'd like to change my cast-iron crank pulley with something a little bit lighter, but not showy/blingy. I have a 68 with a small-block, short water pump, no a/c, DSE ps pump/brtacket/pulley. I would rather not order a billet aluminum pulley, too much shine for me. Is there something interchangeable at the junkyard? Hopefully lighter?

i got a march underdrive pullet set. not chrome but aluminum...supposedly they give you better cooling and 20rwhp but i dont know...the kit came with crank 3 groove. water pump 2 groove and the alt pulley with the face plate...these things are really light way lighter than stock...my boss bought the kit at the same time and he painted his black looks sweet and has been on there for 3 years with no problems...the kit isnt that much and they look awesome

What's wrong with the stock, bolt-on, sheetmetal P/S pulley that fits in front of the other stock pulley?

OK, we need a link to the pulley matrix that's here!

pdq67

I don't have a sheetmetal crank pulley, that would be a better alternative. I now have a cast, heavy three-groove pulley on the balancer. There has to be something out there that will cheaply interchange. I don't have AC.

I thought the cast three groove was used only with factory A/C? Yes there should be a number of choices in stamped steel to meet your needs. Check the pulley matrix in the archives (top of the page).

By the way if the only part left on the planet happens to be a billet aluminum pulley; rejoice as I have not heard of any shortage of high gloss black paint in a rattle spray can. Half the parts on my car are either aluminum or fiberglass painted to look stock. I even paint rusty patches onto the fiberglass inner fender panels and aluminum bolts that hold it together (add a bit of talc to the wet paint for texture). Now if I could just get it to sound like a worn out 305!


Larger Dave

'68 A/C cars have a bolt-on third pully for the compressor. All are sheetmetal.

You aren't talking about the damper itself, are you??

pdq67

http://s63.photobucket.com/albums/h125/camaronamedgrace/Engine/th_CamaroSet3048.jpg (http://s63.photobucket.com/albums/h125/camaronamedgrace/Engine/?action=view&current=CamaroSet3048.jpg)

http://i63.photobucket.com/albums/h125/camaronamedgrace/Engine/CamaroSet3048.jpg

Here's a pic. The pulley is now off so I can, if needed, get a better image. It might be a 2-groove. I reported three-groove, because that's what I see. Thanks for the assistance.

Guys,

Is that a stock '68 s/w/p crank pulley??

I have to say that I am thinking that all s/w/p pulleys were sheet-metal???

Please help me out here.......

pdq67

That;s what was on when I bought it.

OK, post back the letters that are at the end of the VIN number string that should be on the small deck pad that is above the pass. side top water pump bolt and we will try to decode your motor IF it is still a virgin??

pdq67

PS., that look's to me like L/W/P stuff?????????????

And I finally picked up on the orange painted water pump block off plates so I don't know what you have???

Thanks for the help, I'm aware the engine is nowhere near original. It has a short water pump, no A/C. I am installing a Detroit Speed and Engineering power steering bracket and pump. I now know this cast pulley is not stock. Will a Z28 Crank pulley work? Do I need the crank extension? Which crank pulley will work with this combination? I like the deep-grooves, and I would rather stay away from underdriving my accessories. Thanks again for the assistance. I have searched for answers, and I must not be doing a thorough enough job. I am still clueless.

Thanks,

Brad

Will these work?

http://www.yearone.com/images/parts/80_83/823n.jpg



Crank pulley-This stamped-steel, single-groove pulley has an o.d. of 6-3/4".
Part #
Description
Price
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http://www.yearone.com/images/page/trans.gif823NNew GM crank shaft extension pulley for 1964-1972 small block and 1965-1972 big block engines that utilized the short water pump. Applications may vary in years as Corvette and truck models extended the year range to 1972 as the conventional car lines stopped in 1969.


http://www.yearone.com/images/parts/84_86/8533n.jpg



Crank pulley-Stamped-steel 2-groove deep-style pulley for use with short water pump and has an o.d. of 6-3/4".
Part #
Description
Price
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http://www.yearone.com/images/page/trans.gif8533NCrank pulley fits 1967-1968 Z/28 with 302 V8 only, new GM.

That pully may be off a truck or just an aftermarket pulley used for add on AC or additional equiptment. The larger trucks with air brakes used these... I dont see anything wrong this those new sheet metal pulleys you posted. I would use the two or 3 grove if the fan will allow .

Squid I see you are also running power steering so you'll want to stay with double groove pulleys. The best scenario for you is to run the 67-8 deep groove pulleys for short water pump from Chevrolet. This is what I use on my short pump motors. I also don't care for the extra chrome or aluminum when it isn't necessary.

3858533 2 groove Deep Groove crank pulley dia 6 5/8"
3770245 2 groove Spec Hi-perf water pump Deep Groove pulley dia 7 1/8"
3720616 spec hi-perf WP pulley reinforcement (have one, but sized to large pilot) make retainer for bushing

You don't need the reinforcement, most people don't use them, I use them.

Try e-bay. Roger's Chevrolet in West Palm Beach was selling the crank pulley brand new for 31.99. That's about half what I paid for the last one. I bought one from them and they had 2 others for sale. Brand new in GM box, nice semi-gloss black. Sounds like just what you are looking for.

SY1 is correct but if you go too large pulley on the crank ,,,6 3/4 vs. 7 1/8th, you may have to do some juggling of the id of the water pump pulley? I ran into this once. Correct me if I am off my bubble.

ZDLD is right they are very close to each other. I've not had a problem using the stock GM pump and a Stewart aluminum pump. My 68SS still had the original water pump and I put these pulley on it this summer. I'm certain like zdld said though that you may find a pump that will allow them to touch each other.

Also none of my short water pump 68 Camaros had/have power steering, some of my 69s did but they are long pumps. The 68 with those pulleys I suggested and power steering may need a third single groove add on pulley to the crank double pulley. I'll have to do some searching for the part number, GM does make one though.

Here are some nice looking non-chrome pulleys I found. I like the fact they're painted semi-gloss black like the factory. Little more cash than the stock pulleys though.

http://cantonracingproducts.com/pu_source/misc_pulleys.html

That pully may be off a truck or just an aftermarket pulley used for add on AC or additional equiptment. The larger trucks with air brakes used these...All medium/heavy duty trucks came with cast iron pulleys.

As suggested, two-belt pulley for alt/w/pump and smog pump, single belt add-on pulley for power steering.

You can find the sheetmetal or aluminum pulleys on ebay cheap, search for SBC PULLEY

Ebay 160053496577
http://img.auctiva.com/imgdata/1/1/3/7/1/5/webimg/26559624_tp.jpg

Ebay 260053172800 $41.99
http://i21.ebayimg.com/05/i/000/78/28/afc6_1_b.JPG

Here are some nice looking non-chrome pulleys I found. I like the fact they're painted semi-gloss black like the factory. Little more cash than the stock pulleys though.

http://cantonracingproducts.com/pu_source/misc_pulleys.html


These look good and hi tech with no bling.

Thanks for all the repsonses. Will the stock pulleys I listed above work with the DSE PS Pump and bracket? I do not have a smog pump, just the alt, water pump, and power steering.

Thanks again.