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 1973 - 1987 Chevrolet & GMC Squarebody Pickups Message Board

Web 67-72chevytrucks.com


 
 
Thread Tools Display Modes
Prev Previous Post   Next Post Next
Old 03-02-2015, 07:31 PM   #1
eodbeast
Registered User
 
Join Date: Oct 2014
Location: Moncks Corner, SC
Posts: 15
SBC 350 top end noise

I have a top end tick that I can't find the cause of. Brand new Lunati cam (10120701), lifters and matching springs installed two weeks ago. No retainer/guide clearance issues, no coil bind, no retainer/rocker arm interference no rocker arm/valve cover contact, no collapsed lifters. Pulling 30 psi oil pressure at idle and 45-50 at cruise.

Valves have been adjusted 1/2 turn past zero lash, both static and while running with no difference. Replaced old stamped rocker arms with brand new OEM replacements and that took only a slight bit of the noise away...at least for a little while. I'm running Vortec heads on an older block. The same noise was there with the old stock heads, thought changing things out would quiet it down. Eliminated all belt driven accessories (alternator, water pump and power steering).

I'm at a loss and it's driving me nuts. Been turning wrenches on SBCs for 25+ years and have never had one stump me like this. Any ideas?

Here is a short video of what it sounds like.
http://youtu.be/B99cClzos1c
eodbeast is offline   Reply With Quote
 

Bookmarks

Tags
noise, sbc, valve train

Thread Tools
Display Modes

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 10:56 AM.


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