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Original Message
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| Unbalanced 5.0L 302. |
| By carlton taylor - 06/29/2001 12:05:07 PM; IP 208.184.187.246 |
I recently dropped a re-built SBF 5.0L 302 with 351 Windsor heads into my '65 Mustang. The motor was internally balanced and shipped with a (Ford) four-bolt harmonic balancer (E4TE-A3A) sans a flex plate.
My installer wanted to retain the existing front dress pulleys from the existing 289. So he swapped the balancer with a three-bolt damper (part #FMCC5AZ6316B) and a Ford flex plate (part #FMCC3AZ6375L) both of which I believe are 28.2-oz.
Needless to say, the motor has this annoying "humming" vibration.
What I'm wondering is could the motor be unbalanced because the installer exchanged the balancers? I read somewhere the 5.0L 302's are equipped with a 50-oz damper. I'm sure the installer bolted on a 28.2-oz damper and flex plate? (The damper was smaller then the one removed from the 5.0L). Is there a 50-oz three hole damper? And lastly, if the motor was internally balanced wouldn't the damper be completely neutral (zero) balanced?
Any advice you can give me would be more than greatly appreciated.
Thanks,CT
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