HARMONIC BALANCER

martine · September 5th, 2003, 07:22 PM

my question is can i use a olds 455 harmonic balancer for my olds 425.thanks

copper128 · March 10th, 2004, 09:27 AM

Some people say you shouldn't interchange balancers between engines, but in my experience all modern Olds v-8's use the same balancer. The factory parts book only listed one service part # for all 350 and 455 engines the last time I looked. The aftermarket manufacturers only make one balancer for all Olds engines. I'd say compare the 2 original balancers, if they look the same (counterweights the same size & in the same place) it should work fine. 'Course I'm no engineer. Maybe you should check with Joe Mondello (www.mondellotwister.com) he'd know for sure.

Dave · April 2nd, 2004, 10:15 PM

I recently went looking for a harmonic balancer for my 66 425 and learned that the harmonic balancer with the half moons on it was only produced in 64,66 and 67. No one could tell me if a 455 balancer would be adequate so I found a rebuilt balancer with half moons and used it.

Dave · April 2nd, 2004, 10:25 PM

sorry I meant 65,66 and 67 not 64
Dave

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September 5th, 2003, 07:22 PM	#1 (permalink)
martine Member Join Date: Apr 2002 Posts: 35	my question is can i use a olds 455 harmonic balancer for my olds 425.thanks

March 10th, 2004, 09:27 AM	#2 (permalink)
copper128 Junior Member Join Date: Mar 2004 Location: Western New York Posts: 14	Some people say you shouldn't interchange balancers between engines, but in my experience all modern Olds v-8's use the same balancer. The factory parts book only listed one service part # for all 350 and 455 engines the last time I looked. The aftermarket manufacturers only make one balancer for all Olds engines. I'd say compare the 2 original balancers, if they look the same (counterweights the same size & in the same place) it should work fine. 'Course I'm no engineer. Maybe you should check with Joe Mondello (www.mondellotwister.com) he'd know for sure.

April 2nd, 2004, 10:15 PM	#3 (permalink)
Dave Junior Member Join Date: Apr 2004 Posts: 3	I recently went looking for a harmonic balancer for my 66 425 and learned that the harmonic balancer with the half moons on it was only produced in 64,66 and 67. No one could tell me if a 455 balancer would be adequate so I found a rebuilt balancer with half moons and used it.

April 2nd, 2004, 10:25 PM	#4 (permalink)
Dave Junior Member Join Date: Apr 2004 Posts: 3	sorry I meant 65,66 and 67 not 64 Dave