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BBC pulleys- need a quick lesson
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af2
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Location: grassvalley, ca
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1933 Willys Coupe

PostPosted: Fri Aug 20, 2010 12:26 am    Post subject: Reply with quote

If the center is tight I would drill the holes and not worry about being perfect.
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10sec.et
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1969 Oldsmobile Cutlass

PostPosted: Fri Aug 20, 2010 1:06 am    Post subject: Reply with quote

af2 wrote:
If the center is tight I would drill the holes and not worry about being perfect.


X2. if it is centered, dont worry about elongating the holes.

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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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clay
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1972 Chevrolet Nova

PostPosted: Fri Aug 20, 2010 10:04 pm    Post subject: Reply with quote

You know, really for what you pay for an ATI balancer, I think it should fit the pulleys you have and shouldn't require you to dig up other stuff. I agree with everybody else on the hole fitment. I would prefer to file them into the necessary slot instead of drill them larger, but either will work fine using the washers you mentioned. I'm glad people do build stuff that's not mainstream - it makes it intersting. Thanks to you and all the people that choose to do it. Clay
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Big Dave
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PostPosted: Fri Aug 20, 2010 10:12 pm    Post subject: Reply with quote

Bolts on a Chevy balancer are supposed to be fine thread (3/8-24) not coarse thread. If you are going to redrill the holes turn the balancer to put the new hole between the other two. Do not try and redrill the other holes.

Big Dave
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MufflerBearings69
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1968 Ford Galaxy

PostPosted: Fri Aug 20, 2010 11:12 pm    Post subject: Reply with quote

Yeah, I cant sort out what their entire "BBC Pulley" note is about. I think its a scapegoat for when nothing fits! Laughing

A slight amount of filing on the pulley holes will let the bolts go in, so I am going that route. File to fit, blast, powdercoat, and move forward...

In another 2 decades I might get to drive this thing.

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William Jones
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1971 Ford Mustang

PostPosted: Fri Aug 20, 2010 11:27 pm    Post subject: Reply with quote

I had this same issue I used the old 3 bolt sbf march pulley set and openend the holes alittle I still have that pulley if you want it I don't run a alternator anymore its a single groove pulley. It was in the fire but it only damaged the coating I bead blasted it so it will need to be painted or you could leave it silver. Ihad to use the Morroso SBF Alt bracket it is very versitile. LMK

Bam

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af2
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1933 Willys Coupe

PostPosted: Fri Aug 20, 2010 11:58 pm    Post subject: Reply with quote

clay wrote:
You know, really for what you pay for an ATI balancer, I think it should fit the pulleys you have and shouldn't require you to dig up other stuff


FE motor Clay! Shocked
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10sec.et
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1969 Oldsmobile Cutlass

PostPosted: Sat Aug 21, 2010 1:45 am    Post subject: Reply with quote

the ATI balancer for the Olds has a Chevy bolt pattern. i think the Chevy pattern is their "failsafe" when its an oddball. dont screw with the balancer. if you have to, make the pulleys fit the balancer.
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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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MufflerBearings69
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PostPosted: Sat Aug 21, 2010 12:40 pm    Post subject: Reply with quote

Oh no definitely modifying the pulleys- Balancer is 400 bucks, I can get another crank pulley for 5 bucks. lol
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clay
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PostPosted: Sat Aug 21, 2010 1:27 pm    Post subject: Reply with quote

Quote:
FE motor Clay!

I don't care if it's a Ford FE, Pontiac 301 turbo, Buick Nailhead, etc. - for what they cost, it should fit the factory accessory drive system. Now if we were talking about a $50 Chinese damper setup that uses castings, then fine, I would understand them trying to save money any way they can. The ATI dampers are a 100% machined piece (and are VERY nice looking by the way), so why should it cost any more to drill a different bolt pattern, have a different bore, seal diameter, etc. This is of course just my opinion and we all know what those are like Very Happy . Clay

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MufflerBearings69
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PostPosted: Sat Aug 21, 2010 1:35 pm    Post subject: Reply with quote

Fortunately for me the seal rides on a spacer that is behind the damper so there is no chance for them to mess that up...

I agree 100% they should make things right the first time but I came to the conclusion a while back that I will either deal with it, or have to find a new hobby. Sucks, but its how it goes...

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clay
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1972 Chevrolet Nova

PostPosted: Sat Aug 21, 2010 8:50 pm    Post subject: Reply with quote

Quote:
I will either deal with it, or have to find a new hobby.

While I don't like having to do this all the time, you are absolutely right. Clay

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10sec.et
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1969 Oldsmobile Cutlass

PostPosted: Sun Aug 22, 2010 3:47 am    Post subject: Reply with quote

now days, unless youre buying your parts from the dealer for your brand new car/truck, its pretty much a bend/grind to fit and paint to match kind of deal. nothing fits anymore. it cracks me up how the young guys at work are surprised when the "kit" doesnt even come close to fitting. i tell them "a KIT just means that the parts arrive on the same UPS delivery" Laughing .
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af2 wrote:
It seems we can look at our magical Balls and come up with a fix?

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William Jones
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1971 Ford Mustang

PostPosted: Mon Aug 23, 2010 9:41 pm    Post subject: Reply with quote

Mufflerbearings I have the pulley if you want it just send me your address your not that far from me. I will ship it over to you.

The man is always trying to get us to put more and more Chevy parts on our Fords LOL.

Bam

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Take the horse out off the barn and let her RUN BABY RUN!!!!!

92 LX 454ci Clevor 9.24@142.53 N/A
71 Mach1 454ci Clevor 10.16@134 N/A 3850lbs race weight "Lost in fire"
03 Cobra Bone stock 12.42
68 Falcon 363ci 10.55@126 N/A
95 GT 363ci 11.08@118 N/A
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SMOKEmUP
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Joined: 30 May 2002
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1979 Chevrolet Camaro

PostPosted: Tue Aug 24, 2010 11:45 am    Post subject: Reply with quote

William Jones wrote:
The man is always trying to get us to put more and more Chevy parts on our Fords LOL.

Resistance is futile you will be assimilated.

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