4 bolt V-belt pulley?

3

3spd on floor

Founding Member

Aug 13, 2002

1,099

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Acworth, GA

Mar 25, 2006

#1

• Mar 25, 2006

• #1

hey guys,

the engine is a late model roller 5.0 with a 66 timing cover and waterpump. the balancer is a 4 bolt for a late 5.0. so i need a 4 bolt crank pulley for a V-belt setup. did ford ever make something like this and what kinda car would it have come on? also, would it be a terrible idea to just drill new holes in the old 3 bolt pulley? i have access to a machine shop and could do this very accurately.

thanks,

TJ

 

latamud

Founding Member

Oct 22, 2002

791

2

19

Tampa, FL

Mar 25, 2006

#2

• Mar 25, 2006

• #2

As long as its centered you can drill it. There are 4 bolt V-belt pulleys out there.

 

M

mustangman1974

Member

Jan 17, 2004

463

0

16

Mar 25, 2006

#3

• Mar 25, 2006

• #3

go buy another balancer. Ford actually makes a balancer with both 3 and 4 bolt drilled and balanced for later model 5.0. There is very little modification to get everything to line up then. all I needed was a 1/16 in the water pump pulley for dead nuts.

 

5

5.0ina66

Member

Jun 6, 2003

664

0

16

Ohio

Mar 25, 2006

#4

• Mar 25, 2006

• #4

3 and 4 bolt conversion balancer $70 http://store.summitracing.com/partd...4294871851+4294871826+4294864619&autoview=sku

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

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south louisiana

Mar 26, 2006

#5

• Mar 26, 2006

• #5

The 70-up Fords had 4 bolt pulleys. I've got a couple from 351W's and Clevelands layin around.

 

D

D.Hearne

New Member

Sep 29, 2000

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south louisiana

Mar 26, 2006

#6

• Mar 26, 2006

• #6

I'd be just as easy to drill your 3 bolt pulley though. I've done one on my own without a machine shop.

 

F

fastback brian

Founding Member

Jul 15, 2002

540

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So Cal , I.E.

Mar 26, 2006

#7

• Mar 26, 2006

• #7

I was gonna redrill my 3 bolt to fit a 4 bolt but the pulleys have a differnt backspace. I ended up with a 4 bolt from a 70 cleavland and had the two outer pulleys machined off to make in a single groove. March now has single and double groove underdrive pullyies that will fit just about any combo. For a late model v-belt I think you would need a 79-85 mustang lower crank pulley.

 

D

D.Hearne

New Member

Sep 29, 2000

11,730

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south louisiana

Mar 26, 2006

#8

• Mar 26, 2006

• #8

Yea, the back spacing complicates things when mixing components. There's at least two different spacings for small block crank pulleys that I've seen.

 

3

3spd on floor

Founding Member

Aug 13, 2002

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Acworth, GA

Mar 26, 2006

#9

• Mar 26, 2006

• #9

Ok, after looking at the damper i have and the ones on the summit site, it looks like there are two different styles of dampers for the 5.0. one of them has a shim/spacer built in to the front of it, and the other is flat like my old 289 damper. i have the style with the spacer built in, and i think going to the damper 5.0ina66 posted would solve both the spacing issue and the bolt pattern issue.


D.Hearne - would you possibly be willing to part with any of the pulleys you have laying around if i cant make what i've got fit? I really dont want to shell out 75-100 bucks for an aluminum underdrive pulley that will probably just cause my car to overheat anyway.

 

D

D.Hearne

New Member

Sep 29, 2000

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south louisiana

Mar 27, 2006

#10

• Mar 27, 2006

• #10

Yea, you're welcome to them. tried to sell em a couple years ago but found no takers.