I picked up a crank pulley to use on my 302 at a swap meet but when I got it home I found that my engine had four mounting bolts instead of three. The one I picked up had three. Did 289s come with three and 302s with four or was there a year when they changed? The guy that sold it to me was sure it came off a small block Ford engine but wasn't sure if it was a 289 or 302 or what year. I only paid a few buck bucks for it so I'm not out much...

 

My orig. 68" 289 balancer had 3 bolts and when I went to the 87' 302 balncer and belt system it has 4 bolts. Not sure of year changes and such.

 

1970 was the year Ford switched small blocks to the 4 bolt balancer and pullies. '69 and earlier had 3 bolts. Even if you got a 3 bolt balancer and installed everything, the grooves won't match your other accessories. Put it in your swap meet pile and get the right pulley. The good news is the 4 bolt stuff is way easier to find. ;-)

 

Thanks for the info guys...

 

The change was made in 1969, not in 1970.

The outer pulley bolts to the harmonic balancer (6316).

1968 302: C8AZ6316A

1969/79 302 (except 1975/78 Mustang II): D8TZ6316B (replaced C9TZ6316A).

The 302 was introduced Spring 1968, the 289 was canceled at the end of the 1968 model run.

4 bolt outer pulleys are easier to find, but from 1969 thru 1979, there's about 50 different ones! I kid you not.

1, 2, 3 and 4 sheave (groove) outer pulley's were offered. Depending on the application, the offset will not be the same. So you just can't buy one and then expect that the belts will line up.

 

Thanks Bill. In my case nothing lines up currently anyway. I found a two groove water pump pulley that I'll have to shim some if I keep the current crank pulley to line up the alternator. The previous single groove water pump pulley (a GM pulley) was shimmed a LOT. I was hoping this three bolt crank pulley would have a slightly different alignment so I wouldn't have to do any shimming. Getting all the belts aligned when you don't have the right stuff is a PITA...

 

If you can find the casting date code on your 302 block, I might be able to find a NOS two sheave (groove) outer pulley NOS.

Here's one that was used on some 1969/72 passenger cars: DOOZ6A312E / Marked: DOOE-6312-B / Obsolete

WESLEY OBSOLETE PARTS in Liberty KY has 1 = 606-787-5293.

GREEN SALES CO. in Cincinnati OH has 26 = 800-543-4959.

 

Bill, I know I need to do that but just haven't gotten around to it yet. It's still winter here. The engine is supposedly an 85 (according to previous owner) and was probably originally fuel injected but has been retrofitted with a Motorcraft 2bbl carburetor and an older distributor. I also noticed that where a mechanical fuel pump would normally bolt on it has an internal factory block off. What year did they start blocking off the mechanical fuel pump from the factory? I assume this was when fuel injection came in. Is it possible the engine might have even had a serpentine system on it originally? When did that start? The crank pulley that came with it may be original but the water pump (left side exit) pulley is definitely a retrofit (a redrilled GM piece) and was not properly aligned with crank pulley. I'll try to get some numbers off the engine in the coming week when it warms up some...

 

Circa 1984 in both cases.

 

Good to know. So now I know the engine is definitely 1984 or newer. I'm narrowing it down slowly but surely.

Thanks.

 

Surely, I shoulda looked a little further in the parts catalogs...and don't call me Shirley.

 

I don't think that '87 balancer will work with your 289 my friend. I could be wrong 'cause I only know 302's, but in the early '80's Ford changed the counterbalance of the SBF's. If a 289 is anything like a 302, your 289 is balanced for a 28 oz. balancer and the balancer from the '87 302 would be for a 50oz. Again, I could be wrong, but if I'm not, you'll do a lot of damage in a little time. The belt system will work, but you'll need a 28 oz balancer from 70-79 to work right. Also, I think the water pump rotation chaged with the serpentine set-up. Make sure you get the right water pump.

 

I have the 28oz balancer as well as the timing cover and water pump from the 302. and yes your correct the water pump is reverse rotation.
My actual balancer didn't come from the 87' 302, the part number we used was for a much earlier 302.

 

Quote:
<TABLE cellSpacing=0 cellPadding=6 width="100%" border=0 itxtvisited="1"><TBODY itxtvisited="1"><TR itxtvisited="1"><TD class=alt2 style="BORDER-RIGHT: 1px inset; BORDER-TOP: 1px inset; BORDER-LEFT: 1px inset; BORDER-BOTTOM: 1px inset" itxtvisited="1">Originally Posted by 52 Merc
1970 was the year Ford switched small blocks to the 4 bolt balancer and pullies. '69 and earlier had 3 bolts.
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Technically, I suppose you're right. The change was made in '69 for the 1970 model year. Mea culpa.

 

The change was made for the 1969 model year, which began in September 1968.

As I stated in Post #5: The outer pulley bolts to the harmonic balancer (6316).

1968 only 302 harmonic balancer: C8AZ6312A

1969: The original part number for the 302 harmonic balancer was C9TZ6316A

This same part number was used thru 1977, then Ford replaced it in 1978 with D8TZ6316B.

All the outer crank pulley part numbers changed for the 1969 model year.

Reference: 1965/72 Ford Passenger Car Parts Catalog / 302 Engine Section 60.5.

I didn't need to look in the parts catalog to find this out, because I already knew it.

In September 1968, I was the back shop parts counterman at Ralph Williams Ford in Encino CA.