How do I buy a harmonic balancer?
Thread Starter
Joined: Nov 2002
Posts: 3,466
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From: MA, USA
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
How do I buy a harmonic balancer?
I'm building up a motor, and I want everything new. The balancer on this motor is gross looking, and also something like 10" wide! Are they all this big?
So how do I select one? What do you go by? Thanks!
So how do I select one? What do you go by? Thanks!
Thread Starter
Joined: Nov 2002
Posts: 3,466
Likes: 5
From: MA, USA
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Well, I don't care how big it is (this one is the 1969 original to the motor!), I just want whatever is best for my build. I'm just not sure what you base the purchase on!
Is the "motor" internally or externally balanced?
In general, you want a bigger diameter damper with more weight on a forged crank. Smaller and lighter on a cast crank.
I always used Fluidampr pieces on my 350 SBCs and had no problems. They cost more, but they work nicely.
In general, you want a bigger diameter damper with more weight on a forged crank. Smaller and lighter on a cast crank.
I always used Fluidampr pieces on my 350 SBCs and had no problems. They cost more, but they work nicely.
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From: Charleston, SC
Car: 91 Camaro Vert
Engine: 02 LS1, HX40
Transmission: 2002 LS1 M6
Re: How do I buy a harmonic balancer?
Originally posted by aaron7
I'm building up a motor, and I want everything new. The balancer on this motor is gross looking, and also something like 10" wide! Are they all this big?
So how do I select one? What do you go by? Thanks!
I'm building up a motor, and I want everything new. The balancer on this motor is gross looking, and also something like 10" wide! Are they all this big?
So how do I select one? What do you go by? Thanks!
Senior Member

Joined: Sep 2002
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From: Nebraska
Car: '89 Formula
Engine: 355
Transmission: 700R4
Axle/Gears: 9 bolt
Last edited by formularpm; Mar 22, 2005 at 02:01 PM.
Thread Starter
Joined: Nov 2002
Posts: 3,466
Likes: 5
From: MA, USA
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Are there different sizes, or weights or whatever? I have no idea what to get. I don't want to spend too much, but I want everything done right!
Senior Member
Joined: Jan 2002
Posts: 888
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From: Oswego, IL
Car: 1989 Iroc-Z
Engine: 350ci SBC
Transmission: 700R4
Thread Starter
Joined: Nov 2002
Posts: 3,466
Likes: 5
From: MA, USA
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
That says V6...?
Also, don't I have to know something else, like kevinc said, about being internally or externally balanced?
Also, don't I have to know something else, like kevinc said, about being internally or externally balanced?
Senior Member
Joined: Jan 2002
Posts: 888
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From: Oswego, IL
Car: 1989 Iroc-Z
Engine: 350ci SBC
Transmission: 700R4
V6 V8 same balancer. Small Block Chevy Gen I is the application. ..click on application..its says what it fits.
If its a 69 350 then its most likely internally balanced
If its a 69 350 then its most likely internally balanced
Joined: Mar 2000
Posts: 43,187
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
V6 and SBC V8.
Unless you have a 383 or 400, you don't need to know whether internal or external balance. All 350-smaller are internal balance.
Unless you have a 383 or 400, you don't need to know whether internal or external balance. All 350-smaller are internal balance.
Thread Starter
Joined: Nov 2002
Posts: 3,466
Likes: 5
From: MA, USA
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Ok, good to know! So buy the one linked above?
Also, anything related to this I should get? Or is this all there is to it?
Also, anything related to this I should get? Or is this all there is to it?
Thread Starter
Joined: Nov 2002
Posts: 3,466
Likes: 5
From: MA, USA
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Hmm, I'm going to have to paint quite a bit I think, as everything is new!
I just have to find a place to powdercoat everything
I just have to find a place to powdercoat everything
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Joined: Jan 2005
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From: Gambrills, Md
Car: clapped out 84Z
Engine: 355 efi roller
Transmission: tremec TKO
Be sure and verify timing marks on balancer are correct when you install it. If not purchase the correct timing tab or mark the balancer yourself.
Thread Starter
Joined: Nov 2002
Posts: 3,466
Likes: 5
From: MA, USA
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Hmm, the one in the link says for mildly built... does aluminum heads, new cam, and a Stealth Ram still fit under that?
Just want to make sure before I order everything!
Just want to make sure before I order everything!
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