Decided to get the 8" pulley

Ok I said forget about the cam swap for now. I need to see if the gasket is bad anyway on the timing chain cover before I do anything else. I have some X-Mas money laying around and decided to go with the 8" crank pulley to see what kind of boost I can see with it up here. I know I need a Cobra waterpump pulley. I am guessing I can get it from any 5.0 Cobra? Anyone have one for sale?? And my powersteering pump pulley, do I need a bigger one? I have the A/C delete kit, so my pump sits higher than stock. If I need a bigger pulley, where can I get one from? I did the search on here, but couldn't find anything. One last thing. Anybody selling their 8" crank pulley? If not, is ASP the place to get it, and what are they charging for them?

Thanks guys,
Chris

Well lets start with the facts: Your NOT going to find a Junked-out 93 Cobra anywhere, so you'll have to buy the waterpump pulley new from Ford. its about $25.oo
Some say that your P/S and Crank should turn the same speed (1 to 1) But I've been running a stock P/S pulley and a 8" crank pulley for a while now with no problems yet.
I bought my 8" ASP pulley directly from them (custom made to order)
Aluminum is less-expensive that steel ($40.oo less)
A 8" aluminum pulley anadized silver was $160.oo(also red,blue & black/same price)
Do you have 1 belt or 2 ? This all applies for a single belt NOVI only.
If you have a seperate drive belt, you'll have to ask someone else: but I think you can buy a Vortech pulley for those.(also with 2 belts you might not need a COBRA water pump pulley for clearance (i'm not sure though)

Sorry, forgot to mention that I have the older single bet set-up. I have been checking Corral for Cobra parts to see if somebody has a pulley, but they have all been 94-95 Cobra's which is why I was checking to see if their's would work. Guess I'll have to call ASP on Monday to order a pulley.

Chris

Chris H: You need a 93 Cobra water pump pulley as mentioned for the single belt version. They are not that expensive brand new from the dealer if memory serves correctly.

Maybe someone on the board has one they could give or sell to you. Post a WTB (wanting to buy) post in the general classifieds section to see if anyone might have one to give or sell.


You will love the 8" crank pulley! :D


-Chris

Well I got the Cobra waterpump pulley bought. Couldn;t find it for less than $25. Then I get 2 things of bad news today: 1.) ASP is closed until Jan 5th. This completely sucks. 2.) It is for a fact my timing chain cover gasket that is bad. There is coolant seeping out from where that gasket USED to stick up between the block and the cover until I broke it on accident. This completely sucks too. :mad:
Since I was going to be in there, I was going to do the cam, but I don;t have the money to swap out the cam and get the pulley. I already have the cam, but with 80,000 miles on the rebuilt engine, I would want new valve springs and a new double roller timing chain, and some rocker arms. Don't have the money for it. I have about $200-300 to do this. If you guys know of a way to do the pulley and the cam with the money I have, please let me know. If not, I will stick with the pulley because I feel I will get quiet a bit more power from that than just the cam.

Chris

Don't think you can do both with your budget and do it right.

I'd run with just the pulley for now, as you stated you will get alot more outta that then swapping the cam.

Well if all goes well, I will be able to let everybody know how much boost you can make at 4,100' with an 8" pulley and a 2.75" blower pulley. Just to make sure, I won't be spinning this thing too fast right?

Chris

That'll be too much, Paxton recommends a max speed of 55k RPM's.

Here's a link where I broke down crank pulley sizes with the use of a 2.75" blower pulley. My post is a few down from the original post.

http://www.superchargerhelp.com/show...&highlight=rpm

Hmmmm interesting. I read the break down you supplied, and changed a few things. As of right now, I don't go beyond 6000 rpm at the track. I just don't feel the power up top to do it. So with that said, I could go with the 7.5" crank, 3" blower and spin it up to 6000 rpm and have an impellar speed of 548700 or I could do the 8" with the 3" @ 6000 rpm and have an impellar speed of 56640. Either way the blower is 2yrs old and the warranty is gone, but it doesn't mean I want to rebuild it. So what pulley combination are people running to see 12-15psi out of these old 1000's? You think the extra 1000 rpm would make a difference on the impellars? I like the 2.75" blower pulley because it allows me to have boost at a lower rpm which definately helps with the altitude. As always, I am open to suggestions. Thanks for the help so far 5150!

Chris

Goliath (8" pulley member #1, lol) reported a solid 15#'s with just the 8" crank pulley and stock 3" blower pulley, can't recall if he had a powerpipe or not. Either way the boost will come on at a lower RPM, I noticed a nice change with just the addition of the F-150 pulley, boost came on alot sooner. FWIW, the track I raced on in the past is infamaous for crappy air, density was usually 3500-4000+. So there is hope :D

Ok, well it looks like I will order the 8" pulley then on Monday next week when ASP opens back up. I will throw my 3" pulley back on the blower, which means I have a 2.75" for sale if somebody wants to make an offer on it. Knowing me I should probably keep it because as soon as I get rid of it, I'll need it. But if somebody wants it, shoot me an email with an offer. Keep in mind, it'll be a week or 2 before I ship it out. I am leaving in the morning for Chicago for a week.

Chris

I'll take dibs on the blower pulley if the price is right :D

E-mail me at searly@camalott.com and let me know what ya want for it shipped to 79602

figure i can chime in here, it's been a long time since i posted. i have 8 inches (wow, what a statement) and the guys on this board will vouch for me :p
with the stock blower pulley and a powerpipe i saw a solid 15lbs of boost on the dyno. too bad the damn clutch on my car went out , i never got to reap the benefits of 488rwhp and 461 rwtq. so how you guys all been? i have been supa busy with everything. never post anymore.

Welcome back Neil!!! I'm finally getting around to actually assembling my 331.

Sweet deal Neil! Thanks for the input. I am dying to get this pulley, it just sucks having to wait another week to order it. Ordered the Cobra waterpump pulley last night, so that should show up this week while I am out of town. Then I can get that stupid timing chain cover gasket fixed while I am waiting for the big 8" to show up. By that time, it will be close to the end of Jan and it should be in the 60's here again ;) Perfect weather to take the car out and beat on it with! BTW the 2.75 pulley is gone already for those who may have been interested. Sorry.

Chris

I don't know if you've checked neil but i'm putting together a 351 this year.

when you get your cobra pulley, i would take it to a machine shop/machinist and have him grind the outer ring down a little bit. you will find the pulley isn't perfectly rounded and needs to be trued up a little. the fit with the 8 incher is tight as hell and any little out of roundness will make the pulleys rub. not a pretty thing....

I will definately keep that in mind when it comes in. I am trying to get this blower pulley off right now. Anybody have any suggestions?? I don't have any air tools, so this will have to be done by hand. Does the nut come off in reverse like all other nuts do? We used air tools to change it out at a friends last time. Any help with this in the next hour or 2 is greatly appreciated. trying to get this shipped out today before I leave.

Chris

i didn't know you were going 351 . good for you man. i have been away from the site for some time. need to catch up on things

I can partially bring you up to speed:

Ian's doing a dart block 428
Chuck sold his Novi 1000 and is stepping up to something different
Brent's doing a 351
Steve (468LC) got a new set of heads
Brandon (UNTCHBL) has been thru more mustangs than I can count :D
Troy (ssj50driver ) got a bunch of new parts and is now broke
Dan (Whistler) is enjoying his winter lay-off
and......

Mine still doesn't run:D

damn, that's a nutshell. thanks bro. i am still in the process of finding a coupe. i am going to look at a 92 4cyl on saturday. i have been focusing on work and family and the car has kinda been on the shelf for a while. but the enthusiasm is back(along with a healthy christmas bonus from work) so hopefully i will have my own tales to tell soon enough.

Awesome! I think I'm gonna try the 3" blower and 8" crank pulley combo by mid summer. i know i'm gonna get a N2k before the snow flies next year though.

Quote:

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Originally Posted by regattacoupe

Awesome! I think I'm gonna try the 3" blower and 8" crank pulley combo by mid summer. i know i'm gonna get a N2k before the snow flies next year though.

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Wish that a Novi 2k was in my future but I just flat out can't forsee me being able to afford one anytime soon....

"got a bunch of new parts and is now broke"

doesnt this suck? (being broke) :)

the Cobra waterpump pulley?

Unless you have a bunch of dumba**es working at your local Ford dealer, you should be able to just order/ask for a w/p pulley for a 93 Cobra. Would be the easiest and quickest route to get one, unless you live in Abilene Texas :D

Have an update on the 8" pulley. Called ASP today, they want $225 for a custom made 6-rid 8" crank pulley. No thanks. They have an 8-rib 8" pulley in stock for $199. Still more than I planned on spending. How did everybody seem to get their pulley so cheap, and did you get it through ASP? Anybody know how to get one cheaper through them, or anybody else?? I really have my mind set on getting one, but things are tight enough as it is, and really can't afford to throw down another $60 more than I had hoped to spend.

Chris

i heard its worth it so i just bought mine :)

If I didn't have a 3 month old at the house, it would probably be pretty easy to come up with the extra $60. Guess I will just have to put away what I have, and wait till I have enough to get the pulley. Anybody see the 8-rib causing me any problems?

Chris

lol Chris, try having 3 kid's. I'm was a happy camper when we were down to just one in diapers, I swear we were spending close to $40 a week for diapers alone.

Just curious, did the person you spoke with at ASP understand that it was for a single drive belt and not the duel set-up??? That $200 plus seems quite steep and I swear that a couple others here just recently got the 8" 'er for closer to $150....

Quote:

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Originally Posted by 5150 LX

Unless you have a bunch of dumba**es working at your local Ford dealer, you should be able to just order/ask for a w/p pulley for a 93 Cobra. Would be the easiest and quickest route to get one, unless you live in Abilene Texas :D

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worse. I live in Guam. You think your Ford dealer sucks? Eminem wrote a song about this one here. Max at Five Star Ford in Arizona is getting me one. They do a great mail order buisiness. Great guys.

Sean, not too sure if she knew it was a single belt drive or not. I just asked her how much an 8" pulley would be for my Mustang because I had a blower for it. I will try to call them back this week and see if I get somebody else, or if I can make more sense to her. Glad you brought that up, thanks.

Chris

Ok, just bought the pulley today from ASP. Talked to some dude there, and got the 6-rib for $175 for a blue aluminum one shipped. He says it will take about 4 weeks to get it to me as they are behind. Guess that gives me time to get the timing chain cover gasket fixed! So count me in as the proud owner of 8"!!

Chris

Cool deal, $175 is not too bad better than what you were quoted before. I think you'll like the 8", everyone of the single belt users were very pleased.