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To be or not to be (Internal or external balanced)

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Old Jul 25, 2010 | 08:08 PM
  #1  
hydrolic144's Avatar
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Car: 1987 GTA Trans Am
Engine: 350 TPI
Transmission: 700R4
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To be or not to be (Internal or external balanced)

How to correctly tell if engine is externally/internally balanced?

If it's external, then my balancer would have a weight on the inside as well as a weight flywheel correct?
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Old Jul 25, 2010 | 08:24 PM
  #2  
Atilla the Fun's Avatar
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Re: To be or not to be (Internal or external balanced)

yeah, basically.
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Old Jul 25, 2010 | 08:34 PM
  #3  
hydrolic144's Avatar
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Joined: Dec 2004
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From: Orlando,FL
Car: 1987 GTA Trans Am
Engine: 350 TPI
Transmission: 700R4
Axle/Gears: Borg Warner 9-Bolt 3.27
Re: To be or not to be (Internal or external balanced)

Originally Posted by Atilla the Fun
yeah, basically.
So, if it's internal. Then no weight on balancer and no weight on flywheel?
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Old Jul 25, 2010 | 08:52 PM
  #4  
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From: Northern Utah
Car: seeking '90.5-'92 'bird hardtop
Engine: several
Transmission: none
Axle/Gears: none
Re: To be or not to be (Internal or external balanced)

Correct about the damper, but with the flywheel or flexplate, it's complicated with the 1-piece-rear-main-seal engines.
for the '87-up blocks, most stroker cranks, whether internal or external balance, still keep the stock rear external weight, just so you can use any stock-style flywheel or flexplate.
Also confusing the issue, there are stealth dampers available that hide the external balance. These are easy to find on Speedway's website.
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