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10-15-2004, 11:43 PM
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#1 |
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Lovin' Life in Miss.!
Join Date: Mar 2004
Location: Puckett, Mississippi
Posts: 1,937
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Harmonic Balancer
Last month I finished up my LM1 crate install. I decided I wanted a "Quality" harmonic balancer. Figured anything to increase the longevity of my investment.
Went to the local "speed shop". Asked for a harmonic balancer for an externaly balanced 350. Kid looks up in his book, comes back with a Performance Products balancer marked SBC350. Got home read all the literature (weird that way) discovered it was for an internaly balanced motor. Took it back. Got the same kid, insisted that was it. Showed him the literature. Says ok. Looks up in book, comes back with balancer marked SBC 400. I said wait a sec, you sure? He say look for yourself, it's gotta interchange. I looked. No referance to an externally balanced 350 motor. In a moment of weakness thought he must be right. Got home read the literature, saw no red flags, and installed it. Me, not being an engine guy, had no clue. Started up first bump.. Was so proud. Got initial timing done carb halfway tuned... Ran it 2 grand 20 minutes. Everything fine. Went to take it in her first voyage. Thing started vibratin like crazy inside of 10 feet. I immediatly shut down. checked torque converter by disconnnecting (prior problem) it still did it. Suspect was front side. Posted my suspicions on board had an answer QUICK. Said screw it went to Autozone bought another balancer. Problem solved. I still wonder if crank bearing surfaces were prematurely worn cause of my ignorance.
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The truck... you hear that? No really, you did hear that?!!! |
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10-15-2004, 11:44 PM
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#2 |
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Lovin' Life in Miss.!
Join Date: Mar 2004
Location: Puckett, Mississippi
Posts: 1,937
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and thats the story Loghorn Man.
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The truck... you hear that? No really, you did hear that?!!! |
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10-15-2004, 11:59 PM
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#3 |
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,690
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Ahhh, I think I almost remember reading that
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10-16-2004, 12:03 AM
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#4 |
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Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,948
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350's are internally balanced and the 400's are external unless its been rebuilt and the machinist makes it internal
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Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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10-16-2004, 12:54 AM
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#5 |
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Lovin' Life in Miss.!
Join Date: Mar 2004
Location: Puckett, Mississippi
Posts: 1,937
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And I looked up the old post and lo and behold it was CABLEGUY that set me straight!! Again.... Thanks, You da man.
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The truck... you hear that? No really, you did hear that?!!! |
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10-16-2004, 01:00 AM
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#6 |
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Senior Member
Join Date: Apr 2000
Location: Delta,Pa
Posts: 14,948
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lol no problem thats why we are all here can never have too much info
__________________
Owner of North Point Car Care in Dundalk Md. We specialize in custom exhaust on both modern and classic vehicles. We are a full service auto shop from classics to modern vehicles. Feel free to contact me with questions. I will give a 10% discount to any board member. |
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