351W pulleys which ones! - FFCars.com : Factory Five Racing Discussion Forum

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post #1 of 8 (permalink) Old 08-23-2006, 01:33 AM Thread Starter
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Almost time to button up my 408 build. Time to think about purchasing some pulleys. All I need is waterpump alternator and crank. I want a serpentine kit. I have looked at march but not sure which one to get (which part #)?

Drop me some hints guys... Part numbers would be a great help.



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post #2 of 8 (permalink) Old 08-23-2006, 01:45 AM
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Here's the part numbers for the stuff I just got for my 302. I would think the part numbers would be the same. Anyhow, you can look these up on Summit's web page.

MCH-1670 PULLEY A Shipped on 08/18/06 $185.88 1 $185.88

MCH-30355 ALT BRACKET A Shipped on 08/18/06 $105.88 1 $105.88



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post #3 of 8 (permalink) Old 08-23-2006, 01:56 AM
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I went with March Pulleys, the number is #30380. I am going with a Ford Racing Crate motor and I needed to get a crank spacer also with it. I ordered the pulleys from Summit.

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post #4 of 8 (permalink) Old 08-23-2006, 02:19 AM
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The purpose of the serpentine belt was two fold. 1. It allows you to run every driven accessory from one belt. Makes assembly and parts bin maint easier. And 2. allows the manufacturer to mount all pulleys on the same plane, instead of stacking them. Makes for a shorter engine package.

You only have 3 pulleys. In order to add a serpentine belt, you need to add at least one more item; even if it's an idler pulley. That just creates weight, drag, and clutter with no advantage. Why do you want to do this?

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post #5 of 8 (permalink) Old 08-23-2006, 02:50 AM
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If you are going to run only the water pump and alternator, get the alt bracket and ribbed pulley from Mike Everson, and use a stock serpintine 5.0 crank pulley, and a short serp belt. Considerably cheaper than the March pulleys. Unless you want the bling.


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post #6 of 8 (permalink) Old 08-23-2006, 10:43 AM
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These are Summit pulleys I got for less than $80 for the set. They are powder coated steel and they make a set for a standard rotation wp (I didn't install the alternator pulley in this picture). You will also need the crank pulley spacer.

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post #7 of 8 (permalink) Old 08-23-2006, 03:53 PM
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Mike Forte has nice aluminum pulleys for just what you are doing. I used his pulleys with Ford brackets (inexpensive from RDI) . All the other mounting solutions I saw got in the way of my coolant header tank.(Engine mounted just like 1962. Jpersons is sweet I might need that, it's mounted low. Mark Reids is the higher one. I needed the serp because of it's higher grip than the Vbelt my mega amp 3g alt needs this as recommended by PA Performance. Bob

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post #8 of 8 (permalink) Old 08-23-2006, 08:08 PM
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If you really want an inexpensive setup and don't mind a little hunting expedition you can do what I did. Remember that I am running an early "long" style water pump, not the late model "shorty" pump. With a shorty pump you might not need the crank spacer mentioned below. I used a stock Mustang alternator pulley for serpentine belt, added a water pump pulley from a 1987 T-bird Turbo Coupe, part number E7SZ-8509-B, which is a flat grooved pulley for standard rotation water pumps. There is also a dual belt pulley, part number E7SZ-8509-A available and the unused front pulley is a snap to remove. Finally, I used crank pulley, part number E4ZE-6312-A7A. This crank pulley is a bit large at 6 1/8" diameter but I used it to achieve a mild overdrive of the water pump to help cooling at idle on the street. If you prefer sustained high RPM running, you can use a stock 1986-92 crank pulley from the 302 V-8 which will work nicely. I had to space the crank pulley forward by 1/4" using a FMS .375" aluminum crank spacer that I turned down on the lathe to .250" to align the crank and water pump pulleys. I also spaced the alternator forward by 1/4" to align that item. I believe I used a 39" Dayco belt on my 351W but I'm not sure. I hope this info helps you find what you want.

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