85 Harmonic Balancer
Thread Starter
Racer
Joined: Oct 2004
Posts: 278
Likes: 23
From: Rock Hill, SC [RCG] KANUCK
85 Harmonic Balancer
The balancer on my 85 is an 8 inch external balance. I am pretty sure that the stock one should be a smaller internal balance type.
The only markings on the one I have is on the back side where it is stamped M89.
Does anyone know what this balancer is?, as I think it may have slipped a little.
The only markings on the one I have is on the back side where it is stamped M89.
Does anyone know what this balancer is?, as I think it may have slipped a little.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
The front cross member must have been modified. Why do you ask? What will you be doing, once you know? That damper indicates a minimum of an externally balanced 383 or something bigger.
RACE ON!!!
Burning Brakes
Joined: Aug 2004
Posts: 1,110
Likes: 1
From: Geneseo Illinois
St. Jude Donor '06
Originally Posted by q2blaster@work
"CFI-EFI" is that forum slange for "Richard Cranium"?
Thread Starter
Racer
Joined: Oct 2004
Posts: 278
Likes: 23
From: Rock Hill, SC [RCG] KANUCK
The reason I ask is that is what is on my car, and yes, it is real close to the crossmember.
Was thinking that this does not look right, being so close to the crossmember.
Do not know the history of the motor, how can you tell if it is a 383 motor?
Was thinking that this does not look right, being so close to the crossmember.
Do not know the history of the motor, how can you tell if it is a 383 motor?
Race Director
Joined: Aug 2000
Posts: 14,130
Likes: 7
Cruise-In II Veteran
Originally Posted by LD85
You should re-measure, I dont think you can get the engine in with an 8" dia. piece and still get the motor mount bolts in.
I "think" 6-3/4" is the largest you can install.
I "think" 6-3/4" is the largest you can install.
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Every 2027 Corvette Engine Explained
Joe Kucinski
Designer Imagines A Corvette That Looks More Like a Corvette Than the Corvette
Verdad Gallardo
10 Ugly Corvettes That We Still Kinda Love
Joe Kucinski
Top 10 Most Expensive Corvettes Ever Sold on Bring A Trailer
Brett Foote
10 Things Every Corvette Owner Needs (2026 Edition)
Michael S. Palmer
8 Most "Only Corvette Owners Understand" Quirks and Problems
Pouria Savadkouei
10 Reasons the C6 Z06 is Still A Performance Benchmark After 20 Years
Joe Kucinski
How Much Horsepower Every Corvette Engine "LOST" in 1972
Joe Kucinski
Top 10 DOs and DON'Ts for Protecting Your Convertible Top!
Michael S. Palmer
Burning Brakes
Joined: Aug 2004
Posts: 1,110
Likes: 1
From: Geneseo Illinois
St. Jude Donor '06
Originally Posted by Brimis
Ever heard of Edward Francis Hutton?
http://www.seacloud.com/html_en/dies...hte_seite1.php
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by selkirk24
Do not know the history of the motor, how can you tell if it is a 383 motor?
Meanwhile, I'm still trying to figure out what "forum slange" is. At one point I started to second guess my judgment, but it appears I was probably correct the first time, after all. It is nice when someone backs you up. Thanks dock351, brimis, and q2blaster@work, too.
RACE ON!!!
Advanced
Joined: Aug 2005
Posts: 63
Likes: 0
From: Elgin Minnesota
oops
First of all, maybe I let the guy insulting me in one of my posts get the better of me, and for that I apologize!!
Second there is an 8" balancer for a 350, why would you steer him towards thinking he's got a bigger motor, all he ahs to do is feel the back of the balancer, if its a 400 type balancer you can feel where its counterweighted.
Third, I don’t doubt anybody’s knowledge; I guess I didn’t like being insulted so I struck back! Apologies to everyone.
Second there is an 8" balancer for a 350, why would you steer him towards thinking he's got a bigger motor, all he ahs to do is feel the back of the balancer, if its a 400 type balancer you can feel where its counterweighted.
Third, I don’t doubt anybody’s knowledge; I guess I didn’t like being insulted so I struck back! Apologies to everyone.
Drifting
Joined: Jan 2005
Posts: 1,354
Likes: 325
From: San Antonio Tx
My 350 had an 8" ballancer on it, but it was a vortec motor from a 96 truck. It hit the cross member before the weight was on the mounts. I replaced it with a 6 3/4". Don't forget about the front spring that goes through there.
Race Director
Joined: Sep 2000
Posts: 17,298
Likes: 33
From: The Top of Utah
Originally Posted by q2blaster@work
First of all, maybe I let the guy insulting me in one of my posts get the better of me, and for that I apologize!!
Second there is an 8" balancer for a 350, why would you steer him towards thinking he's got a bigger motor, all he ahs to do is feel the back of the balancer, if its a 400 type balancer you can feel where its counterweighted.
Third, I don’t doubt anybody’s knowledge; I guess I didn’t like being insulted so I struck back! Apologies to everyone.
Second there is an 8" balancer for a 350, why would you steer him towards thinking he's got a bigger motor, all he ahs to do is feel the back of the balancer, if its a 400 type balancer you can feel where its counterweighted.
Third, I don’t doubt anybody’s knowledge; I guess I didn’t like being insulted so I struck back! Apologies to everyone.
Second. If you read the first sentence of the opening post you would have read, "The balancer on my 85 is an 8 inch external balance.". Yes, there are 350s with 8" dampers, but I have yet to see one that is externally balanced. If you have information to the contrary, enlighten us. Don't criticize us (ME). BTW, you feel the back of BIG block dampers for the imbalance weight. On the small block, it is evident from the front.
Third. I DO doubt the knowledge, of some. Your attack in your "Second", ignoring information plainly available from the beginning, makes your apology ring a little hollow. it also reinforces my initial comments.
RACE ON!!!
Thread Starter
Racer
Joined: Oct 2004
Posts: 278
Likes: 23
From: Rock Hill, SC [RCG] KANUCK
Have done some checking over the weekend. Do not know what you mean when you say you can feel for something on the balancer. I pulled it off over the weekend, on the outside edge of it( the surface that would be laying on a table if you stood it straight up) does have a section milled out of it, maybe about 1/3 the circumference of the balancer, and about 1/2 the width of the edge.
Also, the flexplate on the car is not the original one as it has 6 bolts attaching it to the torque convertor and the dust shield will not fit on without it rubbing the flexplate.
From what I am hearing, it looks like I may have some sort of stroker motor here.
My main problems with it is that it vibrates a little over about 4500rpm and it seems like I am getting some spark knock.
Am just trying to fix these problems, have timing set to 6 degrees btdc, and everything else is also set to factory spec.
Sounds like I need some help here, maybe this motor needs to be set to different specs.
Any help would be appreciated.
Thanks
Also, the flexplate on the car is not the original one as it has 6 bolts attaching it to the torque convertor and the dust shield will not fit on without it rubbing the flexplate.
From what I am hearing, it looks like I may have some sort of stroker motor here.
My main problems with it is that it vibrates a little over about 4500rpm and it seems like I am getting some spark knock.
Am just trying to fix these problems, have timing set to 6 degrees btdc, and everything else is also set to factory spec.
Sounds like I need some help here, maybe this motor needs to be set to different specs.
Any help would be appreciated.
Thanks