Notices
C1 & C2 Corvettes General C1 Corvette & C2 Corvette Discussion, Technical Info, Performance Upgrades, Project Builds, Restorations

66 427ci. 425 hp lifter noise on cold start.

 
Old 02-10-2019, 12:57 PM
  #21  
Rubc555
CF Senior Member
Thread Starter
 
Member Since: Sep 2012
Location: Omaha NE
Posts: 167
Thanked 2 Times in 2 Posts
Default

Yes it’s the original block heads
Rubc555 is offline  
Old 02-10-2019, 01:15 PM
  #22  
dmaxx3500
CF Senior Member
 
dmaxx3500's Avatar
 
Member Since: Jan 2008
Location: chicago
Posts: 24,073
Thanked 434 Times in 343 Posts
Default

then you better ask the eng builder,or tear it apart to make sure its the right rear cam bearing/cam setup
dmaxx3500 is offline  
The Following User Says Thank You to dmaxx3500 For This Useful Post:
Rubc555 (02-10-2019)
Old 02-10-2019, 01:42 PM
  #23  
TCracingCA
CF Senior Member
 
Member Since: Sep 2002
Location: Hacienda Heights CA
Posts: 19,376
Thanked 291 Times in 258 Posts
Default

I do a round or two of Rislone as I am also cutting open my oil filters to see if nothing bad is happening, and if that doesnít solve it or I am finding metal, I yank it and tear it down!

Last edited by TCracingCA; 02-10-2019 at 01:43 PM.
TCracingCA is offline  
The Following User Says Thank You to TCracingCA For This Useful Post:
Rubc555 (02-10-2019)
Old 02-10-2019, 01:57 PM
  #24  
Rubc555
CF Senior Member
Thread Starter
 
Member Since: Sep 2012
Location: Omaha NE
Posts: 167
Thanked 2 Times in 2 Posts
Default

Well I think I will pull the valve covers and check things out when it’s cold .
Disconnect the coil turnover check the valve lash & rockers see where I’m sitting.
most of my noise seems to be Isolated to the right passenger side.
Rubc555 is offline  
Old 02-10-2019, 02:00 PM
  #25  
Rubc555
CF Senior Member
Thread Starter
 
Member Since: Sep 2012
Location: Omaha NE
Posts: 167
Thanked 2 Times in 2 Posts
Default


Rubc555 is offline  
Old 02-10-2019, 02:26 PM
  #26  
Rubc555
CF Senior Member
Thread Starter
 
Member Since: Sep 2012
Location: Omaha NE
Posts: 167
Thanked 2 Times in 2 Posts
Default

Hey Jack I have the stock valve covers but changed to a custom set had to have some bling and they gave me clearance with the rocker locks
so Iím going to check just for the sake of it 👍
Rubc555 is offline  
Old 02-10-2019, 02:34 PM
  #27  
Nowhere Man
CF Senior Member
 
Nowhere Man's Avatar
 
Member Since: Feb 2003
Location: Sitting in his Nowhere land Hanover Pa
Posts: 33,901
Thanked 1,482 Times in 1,344 Posts
2015 C2 of Year Finalist
Default

With out the grove in the rear cam one side of the engine will get more oil then the other after a while but not enough to keep the rockers lubed.
Nowhere Man is offline  
The Following User Says Thank You to Nowhere Man For This Useful Post:
Rubc555 (02-10-2019)
Old 02-10-2019, 03:11 PM
  #28  
centuryoldracer
CF Senior Member
 
Member Since: Apr 2015
Posts: 5,899
Thanked 60 Times in 54 Posts
Default

Originally Posted by Nowhere Man View Post
With out the grove in the rear cam one side of the engine will get more oil then the other after a while but not enough to keep the rockers lubed.
Another thing to note is one side of the top end is dependent on the distributor sealing in the block just above the gear.
Oil passes through that cavity around the distributior to get to the lifter galley, but only on one side, the other side has a direct oil passage.
centuryoldracer is offline  
Old 02-10-2019, 03:15 PM
  #29  
Frankie the Fink
CF Senior Member
Support Corvetteforum!
 
Frankie the Fink's Avatar
 
Member Since: Aug 2007
Location: Orlando Metro Area Florida
Posts: 46,646
Thanked 3,168 Times in 2,534 Posts
Default

Originally Posted by Rubc555 View Post
Dang - all my trophies are significantly shorter than I am, how did you get it home?

Last edited by Frankie the Fink; 02-10-2019 at 03:16 PM.
Frankie the Fink is offline  
Old 02-10-2019, 03:16 PM
  #30  
centuryoldracer
CF Senior Member
 
Member Since: Apr 2015
Posts: 5,899
Thanked 60 Times in 54 Posts
Default

Originally Posted by Rubc555 View Post
Well I think I will pull the valve covers and check things out when itís cold .
Disconnect the coil turnover check the valve lash & rockers see where Iím sitting.
most of my noise seems to be Isolated to the right passenger side.
With the valve cover off you could check to see if it is oiling on that side. If either the cam or the bearing is notched it should be fine. Also the distributor fitting snugly down low to seal the oil galley to that side is important. MSD distributors have two small o rings to positively seal that area.
centuryoldracer is offline  
Old 02-14-2019, 08:31 PM
  #31  
JohnZ
CF Senior Member
Support Corvetteforum!
 
Member Since: Oct 2000
Location: Washington Michigan
Posts: 37,899
Thanked 947 Times in 632 Posts
Default

Here's the story on the early big-block rear cam journal and bearing - have dealt with this MANY times where people used the wrong cam and/or rear cam bearing.
Attached Images
File Type: pdf
BBCamBrgTech.pdf (655.5 KB, 12 views)
JohnZ is offline  
 


Thread Tools
Search this Thread
Quick Reply: 66 427ci. 425 hp lifter noise on cold start.


Sponsored Ads
Vendor Directory

Contact Us - About Us - Archive - Advertising - Cookie Policy - Privacy Statement - Terms of Service

© 2019 MH Sub I, LLC dba Internet Brands

We are a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
 
  • Ask a Question
    Get answers from community experts
Question Title:
Description:
Your question will be posted in: