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01-29-2006, 01:30 AM
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#1 |
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Registered User
 
Join Date: Aug 2005
Location: Philly
Posts: 1,140
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Harmonic Balancer ?
Can you use the harmonic balancer off a 283 on a 350? Summit just says small block for its balancers? I'd much rather not spend the money for a new one.
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01-29-2006, 05:12 AM
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#2 |
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Cantankerous Geezer
Join Date: Aug 2002
Location: Bel Aire, KS
Posts: 6,264
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Re: Harmonic Balancer ?
You can but the timing marks were moved in 69, so you would have to compensate. The rubber in balancers ages, loses it elasticity and can slip. You will be far better off in the long run with a new one.
__________________
Fred There is no such thing as too much cam...just not enough engine. 
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01-30-2006, 12:13 AM
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#3 |
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Registered User
Join Date: Aug 2005
Location: Philly
Posts: 1,140
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Re: Harmonic Balancer ?
Thanks Fred T, I bought a new one and installed it today.
Now here's a kick in the ass. When I bought this truck back in the summer, the po told me the engine was a 283. With the intake it looked like one to me so I had no reason to think otherwise. We pulled the engine yesterday to swap in a 350 and just for the hell of it, I ran the casting numbers through Mortec.com last night. Turns out the damn thing was a 350 all along! Just goes to show that you can't take anything for granted. |
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01-30-2006, 02:24 AM
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#4 |
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Msgt USAF Ret
 
Join Date: Jan 2005
Location: Kalamazoo, Michigan
Posts: 8,723
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Re: Harmonic Balancer ?
Was the casting number 3970010 cause gm made a 302 and a 327 with that same number. The 327 had an intake like the 283 with the oil filler in the front of the intake and the t-stat housing pointed straight ahead.
__________________
VetteVet metallic green 67 stepside 74 corvette convertible 1965 Harley sportster 1995 Harley wide glide Growing old is hell, but it beats the alternative. |
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01-30-2006, 10:35 AM
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#5 |
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Registered User
Join Date: Aug 2005
Location: Philly
Posts: 1,140
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Re: Harmonic Balancer ?
Nope it's 3970014 which only comes up as a 350 in all the online searches I've done. The intake is probably what threw me off though.
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01-30-2006, 12:46 PM
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#6 |
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Registered User
Join Date: Jan 2000
Location: Wyoming USA
Posts: 2,463
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Re: Harmonic Balancer ?
What size of balancer was on it?The 350 had a 8" and the 283/327 had 6 1/4" or 6 3/4" bal.
__________________
2001 Silverado K-1500 2005 FXDWG stage3 69 CHEVY Short/Step 327/4L60 373 posi 63 IMPALA 327/4L60 |
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01-30-2006, 02:37 PM
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#7 |
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Registered User
Join Date: Aug 2005
Location: Philly
Posts: 1,140
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Re: Harmonic Balancer ?
It was an 8".
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