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Author
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Topic: confuse about pully
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68StangTAY
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Member # 11114
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posted
 
 
i just switched my harmonic balancer to match my flexplate both off a 5.0 but its on my 302 in my 68 stang an i noticed the pully bolt pattern is different the 68 has a 3 hole triangle pattern when the 5.0 has a 4 hole square pattern so it doesnt line up so my question is do i use the 5.0 pulley if so doesnt it have to be a non-serpentine pulley?
Posts: 416 | From: oakland | Registered: Jul 2011
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wilit
Mustang Messiah
Member # 3367
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posted
Is the engine in your car a 302 or a 5.0? The pre-'81 302's use 28oz flywheels/balancers and the post-'81 5.0's use a 50oz flywheel/balancer. You can't run a 50oz on a 28oz crank and vice versa. you'll tear the motor up.
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"If a man hasn't found something worth dying for, he isn't fit to live." - Martin Luther King Jr.
Posts: 4793 | From: 37.78514° North 122.40100° West | Registered: Oct 2003
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68StangTAY
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Member # 11114
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posted
the motor is a 68 302, but the fly wheel is off a 90 gt 5.0 302 it was vibrating i was told it was because i still had the old harmonic balancer still on the motor instead of the 5.0 balancer
Posts: 416 | From: oakland | Registered: Jul 2011
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wilit
Mustang Messiah
Member # 3367
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posted
Like I said before, you can't use the 5.0 balancer on the 302, they're the wrong ones. You need to pick up a 28oz flywheel to match your '68 balancer. The flywheel and balancer need to match the imbalance of the crank.
This is all assuming you're positive it's the original '68 302.
[ September 09, 2011, 01:51 PM: Message edited by: wilit ]
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"If a man hasn't found something worth dying for, he isn't fit to live." - Martin Luther King Jr.
Posts: 4793 | From: 37.78514° North 122.40100° West | Registered: Oct 2003
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