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#579587 10/01/2009 7:53 PM
Joined: Mar 2009
Posts: 40
R
Apprentice
Apprentice
R Offline
Joined: Mar 2009
Posts: 40
I rebuilt this 235 almost three years ago and I finally got in in my 62 c-10 and I have even been driving it around the hood , but I keep forgetting to put a bolt in the harmonic balancer . It does have one right? If so I can't find it and I don't know what size it is? can anyone help this weekend parts replacer ?

Joined: Jan 2000
Posts: 2,074
J
'Bolter
'Bolter
J Offline
Joined: Jan 2000
Posts: 2,074
I just use the same kit for a small block V8 (bolt & thick washer), but you will have to drill and tap. Should have been done when rebuild, but I just eyeballed mine and it's been there for 18 plus years.


It's easier to get forgiveness than permission!
1946 1/2-Ton Chevy
1953 Chevy 3/4-ton Factory Stakebed
Joined: Sep 2001
Posts: 29,269
Bubba - Curmudgeon
Bubba - Curmudgeon
Joined: Sep 2001
Posts: 29,269

Supposedly, some later 261s crank shafts came drilled for a harmonic balancer bolt (replacement engines), but most (if not all) were not drilled.

This bolt/washer set is readily available at most parts stores and it is the bolt-size for which most people/shops drill/tap the crank shaft.

Tim


Joined: Mar 2009
Posts: 40
R
Apprentice
Apprentice
R Offline
Joined: Mar 2009
Posts: 40
So are you saying they only put on a bolt when the engine has been rebuilt ? were they just pressed on originally , then once removed the bolt is put on just in case ?

Joined: Jan 2009
Posts: 1,644
P
Shop Shark
Shop Shark
P Offline
Joined: Jan 2009
Posts: 1,644
If You drill and tap the crank it is easyer to install the harmonic balancer ,You don't have to bang it on with a hammer , I did mine 7/16 X 20 thread most HB installer kits come with a 7/16X20 stud some places You can rent them .

Pete


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