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


Reply
 
Thread Tools Display Modes
Old 07-19-2006, 08:30 PM   #1
swb85
On a budget like Fred Sanford
 
swb85's Avatar
 
Join Date: Oct 2005
Location: Topeka, KS
Posts: 2,031
lifter=1, me=0 (pics)

I posted a thread a few days ago about maybe doing a cam swap after I suspected a bit of a lifter problem......the verdict is in, see for yourself. Had one chewed up quite a bit.
http://putfile.com/pic.php?pic=main/...4727.jpg&s=f10

Good wear pattern vs. wear pattern
http://putfile.com/pic.php?pic=main/...5541.jpg&s=f10
http://putfile.com/pic.php?pic=main/...4732.jpg&s=f10

Cam, lifters and springs will be here friday.....guess I know what I'm doing this weekend!! At least it's supposed to only be 90 degrees this weekend....down from the 108 we had yesterday and today.
__________________
'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread
'98 Camaro z28: 370ci twin turbo 370ci build
'01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD

Last edited by swb85; 07-19-2006 at 09:49 PM.
swb85 is offline   Reply With Quote
Old 07-19-2006, 10:04 PM   #2
SanitysBane
Registered User
 
Join Date: May 2004
Location: Lubbock, Texas
Posts: 2,121
Re: lifter=1, me=0

Thats nothing, I had the springs showing on two of my lifters. Good luck on the cam swap.
Attached Images
 
__________________
'96 Nissan Pathfinder
'02 Firebird Trans Am.
'88 K5 Blazer
SanitysBane is offline   Reply With Quote
Old 07-19-2006, 10:08 PM   #3
C&C Chevy
Registered User
 
C&C Chevy's Avatar
 
Join Date: Feb 2003
Location: Midwest City, OK
Posts: 1,001
Re: lifter=1, me=0 (pics)

Quote:
Originally Posted by swb85
At least it's supposed to only be 90 degrees this weekend....down from the 108 we had yesterday and today.
Yeah, we have a cold front coming in that will knock the highs back down to 98.


yay.
__________________
Robert

Current:
1986 SWB Silverado 4.3 / TH400

Past:
1985 SWB Silverado 305 / TH350 - sold 1995
1987 1/2 ton Silverado - FI 350 / 700R4 sold 2007
C&C Chevy is offline   Reply With Quote
Old 07-20-2006, 12:40 AM   #4
olblue81
Registered User
 
olblue81's Avatar
 
Join Date: Jul 2005
Location: Saskatchewan
Posts: 189
Re: lifter=1, me=0 (pics)

Quote:
Originally Posted by swb85
I posted a thread a few days ago about maybe doing a cam swap after I suspected a bit of a lifter problem......the verdict is in, see for yourself. Had one chewed up quite a bit.
http://putfile.com/pic.php?pic=main/...4727.jpg&s=f10

Good wear pattern vs. wear pattern
http://putfile.com/pic.php?pic=main/...5541.jpg&s=f10
http://putfile.com/pic.php?pic=main/...4732.jpg&s=f10

Cam, lifters and springs will be here friday.....guess I know what I'm doing this weekend!! At least it's supposed to only be 90 degrees this weekend....down from the 108 we had yesterday and today.
If you don't mind me asking, was this a new cam or an old one? I've read recently in Hot Rod about how new motor oils and flat tappets don't mix so I'm curious to know if this was an issue with that.

As someone who's lost 2 cams before I know this sucks. In '92 the motor in my truck munched 2 Comp Cams after I rebuilt it myself. I then pulled it out and had a pro do it (I installed the frost plug behind the cam too deep) and had them put in the only thing I had laying around - 350/327 from Crane. I was going to university at the time and had no budget left. Not only does the motor not pull like it would have with the 268 that it was supposed to have, it only has about 12 lbs oil pressure at hot idle according to the factory guage. And that's running 15W40 diesel oil. Oh well, it's stayed running since '92. Can't wait to scrape together enough dough to do the 400 I have in the barn!
__________________
Stu-

1981 GMC Sierra Classic LWB
355- original 2 bolt block, 10.2:1, vortec heads, Comp XE268 cam, built by self in 1992
700R4-2000 stall with lockup, shift kit, Corvette servo
3.07 open diff- I need a 3.73 posi!

2nd owner since 1986 - 388,000 km and counting. 100k by the first owner and the rest by me.
olblue81 is offline   Reply With Quote
Old 07-20-2006, 09:14 AM   #5
greg0380
Registered User
 
Join Date: Dec 2003
Location: CT
Posts: 454
Re: lifter=1, me=0

those pics are great. I was told that when a lifter or cam lobe went it went fast and failed because the hardened metal where the two contact was very thin. But it looks from your pics that is not necessarily true.

What issues were you having to suspect the worn parts??
__________________
1985 GMC Sierra 1500, 1/2 ton, 2WD, LWB, TBI 305
5 speed, 3.42 rear

2007 GMC Sierra 1500, xtended cab, 4X4, flexfuel 5.3L

1999 BMW 528i
greg0380 is offline   Reply With Quote
Old 07-20-2006, 09:38 AM   #6
swb85
On a budget like Fred Sanford
 
swb85's Avatar
 
Join Date: Oct 2005
Location: Topeka, KS
Posts: 2,031
Re: lifter=1, me=0 (pics)

Quote:
Originally Posted by olblue81
If you don't mind me asking, was this a new cam or an old one? I've read recently in Hot Rod about how new motor oils and flat tappets don't mix so I'm curious to know if this was an issue with that.
The cam was installed in the motor when the previous owner had it rebuilt. It had about 3 years and 12k miles on it. It was an aftermarket cam, but I don't know the manufacturer or any of the specs on it. I actually haven't pulled the cam yet.....too freaking hot last night and I ran out of dry spots on my shirt. I'll post pics of the cam when I pull it.
__________________
'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread
'98 Camaro z28: 370ci twin turbo 370ci build
'01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD
swb85 is offline   Reply With Quote
Old 07-20-2006, 09:48 AM   #7
swb85
On a budget like Fred Sanford
 
swb85's Avatar
 
Join Date: Oct 2005
Location: Topeka, KS
Posts: 2,031
Re: lifter=1, me=0

Quote:
Originally Posted by greg0380
those pics are great. I was told that when a lifter or cam lobe went it went fast and failed because the hardened metal where the two contact was very thin. But it looks from your pics that is not necessarily true.

What issues were you having to suspect the worn parts??
It sure did fail fast. The motor was running fine on Friday morning, went and got gas over lunch. When I left the gas station, a very slight tapping noise started. It progressively got worse on my way home and back to work. I had to put about 50 miles on the truck before I could park it that evening, so most of that damage is from driving less than 50 miles, babying it the whole time.

I'm gonna look at the whole thing as a blessing though, I get to put in the cam I want! Plus, I found the rubber fuel line from the tank to the fuel pump was so cracked and damage that just pushing on it a little broke it in two!!! Could have easily caused a fire and cooked my truck.
__________________
'85 Silverado swb: 383 stroker, 10.5:1, vortec heads, 232/238 roller cam, RPM air gap, performer 750 carb, stainless longtubes, 3" duals/super 44's, T56/4.11 383ci build / exterior refresh thread
'98 Camaro z28: 370ci twin turbo 370ci build
'01 Tahoe LT 4x4: 5.3, longtubes/ory, magnaflow duals, custom tune....wife's DD
swb85 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 09:51 AM.


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