Crank damper

[Skidado]

67 GT350 4-speed thermactor car #2751

My crank damper looks like the outer ring has slipped a few degrees.  I checked it for TDC today and I think it is about 5 degrees off.  So I have located a replacement - a correct original HiPo C3 damper.  However, on checking back to mine on the car, it looks like I've currently got a service replacement C8 damper!!  It's certainly been on the car since 1983...  Hopefully the attached picture is clear enough.

It is date coded B7 which I assume is February 67.  The engine assembly date was 7E9W (May 67?) and the vehicle assembly date was 25th May '67 which all chimes ok.

Did the factory ever use the 'stepped' style dampers on HiPo motors, or is this really a replacement?

David

ps - I think the drill holes you see on the circumference were added when I had the engine balanced a few years back.

[Bob Gaines]

67 GT350 4-speed thermactor car #2751

My crank damper looks like the outer ring has slipped a few degrees.  I checked it for TDC today and I think it is about 5 degrees off.  So I have located a replacement - a correct original HiPo C3 damper.  However, on checking back to mine on the car, it looks like I've currently got a service replacement C8 damper!!  It's certainly been on the car since 1983...  Hopefully the attached picture is clear enough.

It is date coded B7 which I assume is February 67.  The engine assembly date was 7E9W (May 67?) and the vehicle assembly date was 25th May '67 which all chimes ok.

Did the factory ever use the 'stepped' style dampers on HiPo motors, or is this really a replacement?

David

ps - I think the drill holes you see on the circumference were added when I had the engine balanced a few years back.

What is the engineering number on the block?

[gt350hr]

    C5OE numbered , beveled balancer only for '67 350s.

[Krelboyne]

Dale's Manufacturing can repair it like new. We use their services.

http://www.hbrepair.com/

[Skidado]

    C5OE numbered , beveled balancer only for '67 350s.

Yes, sorry, I meant C5 not C3.

[Skidado]

[/quote]What is the engineering number on the block?
[/quote]

C5AE 6015E.

[GT350DAVE]

The late 67 GT 350 cars did not use the common hipo damper. They used a 68 style damper but it has a 67 part number. Your damper looks correct to me for a 5/25/67 build date.

Dave

[1175]

Dave,

Were any of the very late 289 hipo blocks c8 blocks?

Thanks
Jon

[TJinSA]

I thought all the 67 timing covers had a cast-in timing pointer; the photo looks like the late 68 & up...

[Skidado]

The late 67 GT 350 cars did not use the common hipo damper. They used a 68 style damper but it has a 67 part number. Your damper looks correct to me for a 5/25/67 build date.

Dave

Many thanks Dave - you just saved me from an expensive mistake!

I thought all the 67 timing covers had a cast-in timing pointer; the photo looks like the late 68 & up...

At a guess - since this has the '68-style HiPo damper it has to have the '68-style timing pointer.  I could be wrong...  I've been wrong before... Twice! 

David

[gt350hr]

The late 67 GT 350 cars did not use the common hipo damper. They used a 68 style damper but it has a 67 part number. Your damper looks correct to me for a 5/25/67 build date.

Dave

       Dave are you saying the "hub" has a C7ZE casting number?
Thank you for enlightening me on the use of the "stepped" balancer. I have only worked on/ seen the beveled version on '67 350s. I obviously haven't seen them "all" LOL
     Randy

[GT350DAVE]

Dave,

Were any of the very late 289 hipo blocks c8 blocks?

Thanks
Jon

Hi Jon,
All 67 GT 350 cars had C5AE-6015-E blocks.
Dave

[GT350DAVE]

The late 67 GT 350 cars did not use the common hipo damper. They used a 68 style damper but it has a 67 part number. Your damper looks correct to me for a 5/25/67 build date.

Dave

       Dave are you saying the "hub" has a C7ZE casting number?
Thank you for enlightening me on the use of the "stepped" balancer. I have only worked on/ seen the beveled version on '67 350s. I obviously haven't seen them "all" LOL
     Randy

Hi Randy,
The non beveled version has a C7 part number. This part was also used on the GT 350 cars with AC. The reason for the use on the AC cars is that the lower AC pulley won't fit into the earlier balancer.
Dave

[gt350hr]

 Jim Cowles has a C5OE that is "relieved" for use with A/C. I have seen a couple of these in the past. I have the C7ZE noted in my list of balancer casting numbers but no"details" associated to it. I will add the details.
   Randy

[67350#1242]

Here is a link to previous discussions:
https://www.saacforum.com/index.php?topic=6759.msg57222#msg57222

Have you looked at the front casting number and is it the modified C5OE to C7ZE ?
Does your car have A/C?