Crank Pully ??????

68 Newbie · 03-31-2007, 09:18 PM

I have a 68 with a 289 and I ordered a new crank pully, when it showed up it was a 3 hole and the one that came off the engine was a 4 hole. All the photos on new crank pullys are 3 hole, so what do I have a Frankenstien of a engine. PLEASE HELP!!!!!

bmxmon · 04-01-2007, 10:37 AM

Im guessing what you have isnt a 289 and isnt the original engine. (at least the harmonic balancer isnt original) Looking through the online parts catalogs the early mustangs had 3 bolt crank pulleys, I then went out and looked at mine (in the rain no less!) which is a 79 motor which has 4 bolts. Apparently they switched at some point of time, not sure when though. Perhaps it was actually in 79, though im not sure if the 79 is a 28oz or 50oz balance...pretty bad when its my own engine. Anyway, order a new pulley or drill out the one you have. Good luck.

rwhite65 · 04-01-2007, 05:25 PM

They did switch to the 4 bolt, but I haven't messed with that stuff in a while, so I am drawing a blank on exactly when. I want to say late 60's though.

You have a lot of different options here to make it work, but the easiest might be just to send it back for the right one.

mustangII460 · 04-01-2007, 06:59 PM

Seems like 1969 Ford went to a 4 bolt.

Rev · 04-03-2007, 07:15 PM

Frank is right. According to my John's Mustang Catalog, I968-1969 302 had a 3 bolt offered and 1968-1973 302 had a 4 bolt offered. Should not be such a big deal as each balancer has a corresponding pulley available for it.

Rev

68 Newbie · 04-08-2007, 06:55 PM

Thanks for the replies, I think I found what I needed. 70 and later models came with 4 bolt
Thanks Again

03-31-2007, 09:18 PM	#1
68 Newbie Registered Member Join Date: Mar 2007 Posts: 2	Crank Pully ?????? I have a 68 with a 289 and I ordered a new crank pully, when it showed up it was a 3 hole and the one that came off the engine was a 4 hole. All the photos on new crank pullys are 3 hole, so what do I have a Frankenstien of a engine. PLEASE HELP!!!!!

04-01-2007, 10:37 AM	#2
bmxmon Registered Member Join Date: Mar 2004 Location: Minnesota Posts: 950	Re: Crank Pully ?????? Im guessing what you have isnt a 289 and isnt the original engine. (at least the harmonic balancer isnt original) Looking through the online parts catalogs the early mustangs had 3 bolt crank pulleys, I then went out and looked at mine (in the rain no less!) which is a 79 motor which has 4 bolts. Apparently they switched at some point of time, not sure when though. Perhaps it was actually in 79, though im not sure if the 79 is a 28oz or 50oz balance...pretty bad when its my own engine. Anyway, order a new pulley or drill out the one you have. Good luck. __________________ Alex

04-01-2007, 05:25 PM	#3
rwhite65 Ride Hard Join Date: Oct 2000 Location: Wyoming IL Posts: 1,094	Re: Crank Pully ?????? They did switch to the 4 bolt, but I haven't messed with that stuff in a while, so I am drawing a blank on exactly when. I want to say late 60's though. You have a lot of different options here to make it work, but the easiest might be just to send it back for the right one. __________________ 65 Fastback 91 roller 306, H/C/I AOD-Bauman, PI Stallion, 4.10's and traction loc 04 Grand Cherokee Freedom Edition 79 Ford F-250 4x4 - Restored

04-01-2007, 06:59 PM	#4
mustangII460 Factoy Five Roadster Join Date: May 2000 Location: Sevier Co,Tennessee Posts: 1,681	Re: Crank Pully ?????? Seems like 1969 Ford went to a 4 bolt. __________________ Frank

04-03-2007, 07:15 PM	#5
Rev Registered Member Join Date: Nov 1998 Location: Houston, Tx. Posts: 3,887	Re: Crank Pully ?????? Frank is right. According to my John's Mustang Catalog, I968-1969 302 had a 3 bolt offered and 1968-1973 302 had a 4 bolt offered. Should not be such a big deal as each balancer has a corresponding pulley available for it. Rev __________________ '66 Coupe, 306, 350-375 HP, C-4, 13.07 e.t., 104.8 mph, 1/4 mi. O.B.C. #2 '66 coupe

04-08-2007, 06:55 PM	#6
68 Newbie Registered Member Join Date: Mar 2007 Posts: 2	Re: Crank Pully ?????? Thanks for the replies, I think I found what I needed. 70 and later models came with 4 bolt Thanks Again

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