[C2] Replacement Balancer
Thread Starter
Burning Brakes
Joined: Nov 2017
Posts: 779
Likes: 112
From: Redneck Riviera, FL
Replacement Balancer
as part of the general mission creep with operation "Try To Stop the Oil Leaks" it looks like i need to replace the 6 1/8" balancer. the vulcanized rubber is squishing out between the rings and seems soft. also, an OP has taken a BFH to it at some point and really beat the crap out of it. the motor is a replacement for the original '67 327/300hp with a CE prefix and a '68 casting date. the end of the crank is threaded and has a retaining bolt. from researching here and over at the ncrs board it seems some were pressed on and some used the retaining bolt. the number on the balancer has a bolt hole through it and reads: 3883??5, maybe 3883955? and the date code is 1 or I 6 F. so sept. '66? the car has a body build date of 11/66 so i guess
that makes sense if the parts from the original engine were swapped over to the replacement motor. one thread mentions that the bolt on style balancers interference fit is not as tight as the pressed on style. how do i distinguish when ordering a replacement? any suggestions or part numbers?
that makes sense if the parts from the original engine were swapped over to the replacement motor. one thread mentions that the bolt on style balancers interference fit is not as tight as the pressed on style. how do i distinguish when ordering a replacement? any suggestions or part numbers?
Race Director
Joined: Apr 2005
Posts: 11,265
Likes: 2,131
From: Bowling Green, Kentucky
All 300 HP balancers were pressed on for C2 cars. Go to Damper Dudes or Damper Doctor for a original rebuilt replacement. Paragon and others also have service replacements. One or both places should have part numbers as well.
If you absolutely require part numbers, we can get this from the parts books for you. But I think you can find it yourself.
Larry
If you absolutely require part numbers, we can get this from the parts books for you. But I think you can find it yourself.
Larry
Thread Starter
Burning Brakes
Joined: Nov 2017
Posts: 779
Likes: 112
From: Redneck Riviera, FL
larry, i probably didn't word that as well as i could have. post #5 in this thread is what i was referring to:
https://www.ncrs.org/forums/showthre...light=balancer
https://www.ncrs.org/forums/showthre...light=balancer
Race Director
Joined: Apr 2005
Posts: 11,265
Likes: 2,131
From: Bowling Green, Kentucky
larry, i probably didn't word that as well as i could have. post #5 in this thread is what i was referring to:
https://www.ncrs.org/forums/showthre...light=balancer
https://www.ncrs.org/forums/showthre...light=balancer
Joe L was wrong on this one. No 66-67 300 HP had this bolt. Even JohnZ agrees in your NCRS link.
Larry
Le Mans Master
Joined: Feb 2008
Posts: 5,214
Likes: 447
From: NJ Hockey beer league
Thread Starter
Burning Brakes
Joined: Nov 2017
Posts: 779
Likes: 112
From: Redneck Riviera, FL
dan, very interesting, and the pad stamp decodes as 1969. the PO said the motor was replace under warranty but didn't remember what year. so not later than '72? also, someone on the ncrs board said that when motor assemblies left flint they didn't have balancers, that they were installed on the line at st. louis. with the '66 date code this balancer might be from the original motor. so larry, if i understand you correctly, none of this makes any difference? would any non shp 327 balancer work? thanks again guys?
Race Director
Joined: Apr 2005
Posts: 11,265
Likes: 2,131
From: Bowling Green, Kentucky
dan, very interesting, and the pad stamp decodes as 1969. the PO said the motor was replace under warranty but didn't remember what year. so not later than '72? also, someone on the ncrs board said that when motor assemblies left flint they didn't have balancers, that they were installed on the line at st. louis. with the '66 date code this balancer might be from the original motor. so larry, if i understand you correctly, none of this makes any difference? would any non shp 327 balancer work? thanks again guys?
Probably any non-shp (base engine) damper would work for you, but I would try to get one specified for your year and type of engine.
Larry
Le Mans Master
Joined: Feb 2008
Posts: 5,214
Likes: 447
From: NJ Hockey beer league
dan, very interesting, and the pad stamp decodes as 1969. the PO said the motor was replace under warranty but didn't remember what year. so not later than '72? also, someone on the ncrs board said that when motor assemblies left flint they didn't have balancers, that they were installed on the line at st. louis. with the '66 date code this balancer might be from the original motor. so larry, if i understand you correctly, none of this makes any difference? would any non shp 327 balancer work? thanks again guys?
Corvette Stories
The Best of Corvette for Corvette Enthusiasts
Top 10 Most Explosive Corvettes Ever Made: Power-to-Weight Ratio Ranked!
Joe Kucinski
150 hp to 1,250 hp: Every Corvette Generation Compared by the Specs That Matter
Joe Kucinski
8 Coolest Corvette Pace Cars (and Replicas) of All Time
Verdad Gallardo
Top 10 Corvette Engines RANKED by Peak Torque (70+ Years of Muscle!)
Joe Kucinski
Corvette ZR1X Will Be Pacing the Indy 500, And Could Probably Race, Too!
Verdad Gallardo
Top 10 Corvettes Coming to Mecum Indy 2026!
Brett Foote
Top 10 C9 Corvette MUST-HAVES to Fix These C8 Generation Flaws!
Michael S. Palmer
10 Revolutionary 'Corvette Firsts' Most People Don't Know
Joe Kucinski
5 Reasons to Upgrade to an LS6-Powered Corvette; 5 Reasons to Stay LT2
Michael S. Palmer
Race Director
Joined: Nov 2003
Posts: 10,696
Likes: 3,090
From: Cottonwood AZ
C1 of Year Finalist (performance mods) 2019
I had a wear groove in my original balancer (which is the same as what I think you have) and ordered a replacement from Damper Dudes look up part #PB1012N it is an exact replacement of the 3/4 inch original. I subsequently decided to use a sleeve on the original balancer which has worked out well (4 years now and no leaks) and would also be a good alternative depending on what's wrong with yours.
Thread Starter
Burning Brakes
Joined: Nov 2017
Posts: 779
Likes: 112
From: Redneck Riviera, FL
i wish a speedy sleeve was all it needed, they work great and are easy to install. just did
both ends of a ford 302 roller motor, at the rear seal and balancer. now no leaks.
thanks for all the great info guys. i'm going to take Powershift's advice and call it what it
appears to be when i talk to the balancer vendors, a 1968 327/300 hp L75.
i
both ends of a ford 302 roller motor, at the rear seal and balancer. now no leaks.
thanks for all the great info guys. i'm going to take Powershift's advice and call it what it
appears to be when i talk to the balancer vendors, a 1968 327/300 hp L75.
i