March crank pulleys 351w

N

no_3

Founding Member

Oct 21, 2002

73

0

0

Feb 25, 2010

#1

• Feb 25, 2010

• #1

Hi guys, I have the March 'Style Track' serpentine kit (part 30420).

The crank pulley (part 2281) has four holes but my damper has 3 holes.

Can anyone shed any light.

Could it be a GM Damper? I don't know if they fit.

Could it be an FE Damper?

It's defiantly aftermarket but can't track down the engine builder.

Any help appreciated so I can start tracking down the right pulley.

 

2

2+2GT

10 Year Member

Apr 25, 2009

3,333

10

79

Southeastern Pennsylvania

Feb 25, 2010

#2

• Feb 25, 2010

• #2

64-69 Mustang (and Ford) pulleys used a system with 3 bolt crank pulleys. In 1970, Ford totally changed the entire system, even using a different offset scheme. Only the little alternator pulleys stayed the same, but the alternators required different brackets to line up with the new system, which, incidentally, had a 4-bolt crank pulleys.

You obviously have a 69 351 damper. If you have a 69 car, this is fine, and you have the wrong March pulleys.

 

N

no_3

Founding Member

Oct 21, 2002

73

0

0

Feb 25, 2010

#3

• Feb 25, 2010

• #3

Thanks Buddy

Very good information. Well it would seem I have the '69 block, crank and dampener.

Now the next question if you don't mind.

Does the Dampener on the pre '69 sit out further that on the later model?

I ask this as I could simply mill a spacer from billet alloy to bring it back inline with the other pulleys.

 

68stang351

Founding Member

May 16, 2002

850

9

39

Savoy TX

Feb 25, 2010

#4

• Feb 25, 2010

• #4

I'm not sure if this would work with the rest of your accesory setup, but on my 69 351w I'm running a 94 351w balancer, late model Mustang/truck timing cover and water pump, original replacement alternator with a serp. pully, with 5.0 Mustang underdrives. Everything works great together on my particular combo.

Maybe that will give you some clues to interchangeability that might help you.

 

2

2+2GT

10 Year Member

Apr 25, 2009

3,333

10

79

Southeastern Pennsylvania

Feb 25, 2010

#5

• Feb 25, 2010

• #5

no_3 said:

Does the Dampener on the pre '69 sit out further that on the later model?

I ask this as I could simply mill a spacer from billet alloy to bring it back inline with the other pulleys.

Click to expand...

I'm pretty sure it's the other way around, the 4-bolt damper sticks out significantly farther than the 3-bolt.

 

N

no_3

Founding Member

Oct 21, 2002

73

0

0

Feb 25, 2010

#6

• Feb 25, 2010

• #6

Thanks guys.
Perhaps the change to a later model balancer could solve my problems?
I guess I really need to get some measurements happening.