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Tech: Budget 302/351 Serpentine Drive

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Old 02-19-2014, 10:22 PM
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Tech: Budget 302/351 Serpentine Drive

Since I've been lately playing around with my engine accessories, I figured I could do a little write up on serpentine pulleys used on 302 and 351 engines. Some of us don't want to spend the $$$ on billet stuff.

Thank goodness Ford standardized their serpentine pulleys for the most part. Pretty much everyone knows that the factory V belt setups are a complete mess if your going to mix and match.

I'm going to concentrate mostly on the 1979-93 Mustang and 1987-96 F-Series/E-Series because they have automatic tensioners and you can mix and match them. There are some Cougars and Mark VII that also share the Mustang setup. The Crown Vic, Grand Marquis and Continental is sort of an odd ball setup with dual belts and manual adjustment.

I'll start with pulleys first. This isn't a complete list of all the pulleys offered. Ford liked to update part numbers even though the pulley is the same. These are most likely what your going to come across.

Alternators
Click the image to open in full size.
Click the image to open in full size.
Left: 1979-93 Mustang 2G Alt– D9ZF-10A352-AA – 2 1/8”
Right: 90's F-150 3G Alt – F0VU-A2A – 2 1/2”

The 2G and 3G alternator pulleys aren't interchangeable. There are a whole bunch of various sizes of pulleys out there to choose from.

Water pump
Click the image to open in full size.
Left: 1989-96 F/E-Series – E9TA-8A528-AA – 5”
Middle: 1987-88 F/E-Series – E7SE-8A528-BA – 5”
Right: 1979-93 Mustang – E1ZE-8509-AA – 4.75”

These require a reverse rotation water pump. The bolt pattern is different from a standard rotation pump. The 1979-93 Mustangs used a standard rotation timing cover while the 87-96 trucks/van got a proper reverse rotation timing cover. Typically replacement Mustang water pumps just have a round whole on the back plate so they can bolt to either style timing cover. Truck/Van pumps do not. Crown Vic/Grand Marquis/Continental have a ribbed pulley for standard rotation water pumps.

Crankshaft
Click the image to open in full size.
Left: 1979-93 Mustang – E4ZE-6312-A7A – 6 1/8”
Right: 1987-96 F/E-Series – F2UA-6312-CA – 6 3/4”

This is where you have to watch out for. Ford started using a 4 bolt harmonic dampner in 1970 and have made them in different thicknesses over the years. You may require a spacer on your harmonic dampner depending on what year it is.

Power Steering
Click the image to open in full size.
Left: 1987-96 E-Series Saginaw pump – E7UA-3D673-FB – 5 7/8” - Steel
Right: 1979-93 Mustang Ford pump – D9ZC-3D673A-A7A – 5 3/8” - Steel
Click the image to open in full size.
Top: 1987-96 F-Series Ford pump - E57C-3D673-BA – 5 3/4” - Plastic
Bottom: 1987-96 F/E-Series 300 I6 Ford pump - E8TA-3D673-AA – 5 3/8” - Steel

This is pretty simple. Ford pumps require a Ford pump pulley. There are a bunch out there since the pump didn't change much between 1978-2007. Don't really know why they used a plastic pulley on the trucks and cars (except mustang). The E-Series Saginaw pumps require the Saginaw pulley as the center hole is bigger.

Air Pump
Click the image to open in full size.
Top: 1979-93 Mustang – E4ZE-9C480-A7A – 4 3/4”
Middle: Cars/1987-96 F/E-Series 300 I6 – E5AE-9C480-AA – 5 1/8”
Bottom: 1987-96 F/E-Series – E7TA-9C480-BA – 5 3/4”

I'm including these pulleys for those that might be required to have them or those going to run a vacuum pump and don't want spend money on a billet pulley.

Tensioners
Click the image to open in full size.
Left: 1979-84 Mustang
Right: 1985-93 Mustang/1987-92 F/E-Series
Not shown: 1993-96 F/E-Series

The newer style tensioners will fit the older Mustangs but will require a nut for the bolt. Cars used a 76mm pulley and the trucks used a 90mm pulley. Otherwise they are identical. The 1993+ truck tensioner is its own design.

Accessory Brackets

Passenger side – Alternator and Air pump
1979-84 Mustang
1985-93 Mustang/1987-92 F/E-Series
1993-96 F/E-Series

Both styles of the Mustang brackets are essentially the same. The 1985 and up brackets just added a threaded boss for the tensioner and sliding metal sleeves on the accessory holes to account for any slack. The 1993+ changed the alternator mount to a three bolt and tensioner. It also requires an idler pulley if the air pump is removed. The older style is much better looking. All mounting brackets bolt directly to the head so they work for a 302 and 351W.

Drivers side – Power steering/Power steering and Air conditioning
1979-84 Mustang – Power Steering
1979-84 Mustang – Power Steering and Air conditioning
1985-93 Mustang – Power Steering
1985-93 Mustang – Power Steering and Air conditioning
1987 F-Series - Power Steering and Air conditioning
1987 E-Series - Power Steering and Air conditioning
1988-96 F-Series – Power Steering and Air conditioning
1988-96 E-Series – Power Steering and Air conditioning

The Mustang brackets WILL NOT work on a 351W as they have separate brackets that bolt to the head and water pump. The truck and van brackets are designed to bolt to both engines. Its probably best to stick with the truck/van brackets as they are self contained. The Mustang ones have several pieces and get confusing if it has factory or dealer installed air conditioning.

Here is my engine mocked up with 1984 Mustang brackets:
Click the image to open in full size.

Here is my engine mocked up with the 1988+ E-Series passenger bracket: (F-Series similar)
Click the image to open in full size.

Hopefully this might help someone out.
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Old 02-19-2014, 11:14 PM
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Looks like very useful info. Any chance you would have similar info for big blocks?
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Old 02-20-2014, 08:04 AM
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The 460 uses a two belt system. One side is manual tension and the other has the automatic tensioner. 460 EFI heads are different than carbed ones so they could have also changed the mounting holes on the brackets. I haven't really seen or messed with them at all.
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Old 02-23-2014, 06:13 PM
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Turns out there is a 1987 302 truck only bracket that is designed for the older style A/C compressor.
Click the image to open in full size.
I have the factory A/C bypass pulley for this one. Dorman makes a new bypass pulley for the 1988+ brackets.

I also updated the first post with a picture of the other power steering pulleys.
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Old 02-23-2014, 06:24 PM
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awesome info.

I was going to use the factory style ford brackets, but opted for this set I purchased on ebay for $90 including hardware for both.

Required a little modification, but I like the look.

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Old 12-30-2014, 06:37 PM
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Nice write-up...reps
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Old 12-30-2014, 08:08 PM
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Quote:
Originally Posted by ryans88gt View Post
awesome info.

I was going to use the factory style ford brackets, but opted for this set I purchased on ebay for $90 including hardware for both.

Required a little modification, but I like the look.

I was looking at this setup as well.What modifications did you have to do?

Thanks
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Old 12-30-2014, 08:59 PM
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Great thread. Thanks for the info.
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Old 12-30-2014, 09:02 PM
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Quote:
Originally Posted by ryans88gt View Post
awesome info.

I was going to use the factory style ford brackets, but opted for this set I purchased on ebay for $90 including hardware for both.

Required a little modification, but I like the look.

Have you actually run this engine with this belt setup? I would be a little leary about the water pump pulley...not much belt making contact with the pulley and the ribs are on the wrong side for this routing unless that waater pump pulley is smooth which will really exacerbate the friction issue.
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