The 1947 - Present Chevrolet & GMC Truck Message Board Network







Register or Log In To remove these advertisements.

Go Back   The 1947 - Present Chevrolet & GMC Truck Message Board Network > 47 - Current classic GM Trucks > The 1960 - 1966 Chevrolet & GMC Pickups Message Board

Web 67-72chevytrucks.com


Reply
 
Thread Tools Display Modes
Old 07-22-2019, 12:48 PM   #1
forestb
Registered User
 
forestb's Avatar
 
Join Date: Jan 2009
Location: Burbank, CA
Posts: 3,619
My baby started bleeding this weekend

My baby started bleeding this weekend. I was on the freeway and my crankshaft pulley completely sheared off and cut open my lower radiator hose. I have no idea what caused it all the bolts are tightened down to the piece of the pulley that is still attached to be balancer.
forestb is offline   Reply With Quote
Old 07-22-2019, 05:29 PM   #2
MikeN
Registered User
 
MikeN's Avatar
 
Join Date: Oct 2007
Location: Marietta, GA
Posts: 805
Re: My baby started bleeding this weekend

I had that happen once on a 350, the hub of the harmonic balancer was cracked and the balancer flew off the end of the crankshaft while I was driving down the road. I would guess your pulley had a crack, either from old age or use, or possible improper installation.
MikeN is offline   Reply With Quote
Old 07-22-2019, 10:13 PM   #3
Steeveedee
Who Changed This?
 
Steeveedee's Avatar
 
Join Date: Jan 2013
Location: Simi Valley, CA
Posts: 10,693
Re: My baby started bleeding this weekend

Bummer!

50+ year old pulley. No telling what happened to it over the years.
__________________
~Steven

'70 Chevy 3/4T Longhorn CST 402/400/3.56 Custom Camper

Simi Valley, CA
Steeveedee is offline   Reply With Quote
Old 07-22-2019, 11:02 PM   #4
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,252
Re: My baby started bleeding this weekend

So if I am understanding correctly, the crank pulley came apart? Had you noticed any vibration prior to this happening?
__________________
Power Steering Box Adapter Plates For Sale HERE
Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE
Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE
Hydroboost Mounting Plates HERE
Captainfab is offline   Reply With Quote
Old 07-23-2019, 07:58 AM   #5
kens65fb
Registered User
 
Join Date: Dec 2018
Location: Dallas, PA
Posts: 551
Re: My baby started bleeding this weekend

Quote:
Originally Posted by forestb View Post
My baby started bleeding this weekend. I was on the freeway and my crankshaft pulley completely sheared off and cut open my lower radiator hose. I have no idea what caused it all the bolts are tightened down to the piece of the pulley that is still attached to be balancer.
Maybe the pulley broke
kens65fb is offline   Reply With Quote
Old 07-23-2019, 01:10 PM   #6
forestb
Registered User
 
forestb's Avatar
 
Join Date: Jan 2009
Location: Burbank, CA
Posts: 3,619
Re: My baby started bleeding this weekend

Quote:
Originally Posted by Captainfab View Post
So if I am understanding correctly, the crank pulley came apart? Had you noticed any vibration prior to this happening?
correct. I had not noticed any vibration. But it was making a little squeaking sound mostly when first starting it up. I don't know how old the pulley is it's a 350 that I don't know the age of.
forestb is offline   Reply With Quote
Old 07-23-2019, 11:23 PM   #7
Captainfab
60-66 Nut

 
Join Date: Mar 2007
Location: Coeur d'Alene, Idaho
Posts: 23,252
Re: My baby started bleeding this weekend

I haven't seen a pulley come apart like that before. It must have been damaged or cracked and you just did not see it. All I can say is just replace the pulley with a new one and keep an eye on it for a bit.
__________________
Power Steering Box Adapter Plates For Sale HERE
Power Brake Booster Adapter Brackets For Sale '63-'66 HERE and '67-'72 HERE and '60-'62 HERE and "60-'62 with clutch HERE
Rear Disc Brake Brackets For Sale. Impala SS calipers HERE Camaro Calipers HERE D52 Calipers HERE 6 Lug HERE
Hydroboost Mounting Plates HERE
Captainfab is offline   Reply With Quote
Old 07-24-2019, 11:29 AM   #8
forestb
Registered User
 
forestb's Avatar
 
Join Date: Jan 2009
Location: Burbank, CA
Posts: 3,619
Re: My baby started bleeding this weekend

I took it to the mechanic yesterday because I wanted him to diagnose the cause and not just fix the problem. He said that the rod for the water pump pulley also go bent in the process. The water pump is less than a year old. he also said it put a dent in my radiator but it is not leaking. the crankshaft pulley might have been cracked.
forestb is offline   Reply With Quote
Old 07-26-2019, 07:33 PM   #9
rvrfoot
Registered User
 
Join Date: Oct 2016
Location: san bernardino ca
Posts: 1,611
Re: My baby started bleeding this weekend

Do you have pictures?
rvrfoot is offline   Reply With Quote
Old 07-26-2019, 11:35 PM   #10
forestb
Registered User
 
forestb's Avatar
 
Join Date: Jan 2009
Location: Burbank, CA
Posts: 3,619
Re: My baby started bleeding this weekend

No I don’t. I got it back today and all seams well. New water pump and 2 new Mr gasket pulleys. They also made me some new trans cooler lines The old ones were leaking and
About a half inch away from my headers.
forestb is offline   Reply With Quote
Reply

Bookmarks


Posting Rules
You may not post new threads
You may not post replies
You may not post attachments
You may not edit your posts

BB code is On
Smilies are On
[IMG] code is On
HTML code is Off

Forum Jump


All times are GMT -4. The time now is 01:11 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright 1997-2022 67-72chevytrucks.com