ZR-1 Net Registry Forums  

Go Back   ZR-1 Net Registry Forums > C4 ZR-1 > C4 ZR-1s and ZR-1 Parts For Sale/Wanted

Reply
 
Thread Tools Display Modes
Old 07-25-2010   #11
SAM/CH ZR-1
 
Join Date: Jul 2005
Location: Basel/Switzerland
Posts: 152
Default Re: WTB: SGC Stage I Exhaust Cams

I am finishing here a 427 LT5 with stage 3 cams. According my calculations the stage 3 exhaust cams are probably to much. The dyno run will show.
I also install bigger inlet valves and leave the exhaust valves stock size.

For a ported 350cui LT5 I would take the inlet cams a bit bigger but not more than stage 1.
The exhaust cams can be left stock with a professional valve seat and exhaust port job.

Sam
SAM/CH ZR-1 is offline   Reply With Quote
Old 10-24-2010   #12
LGAFF
 
LGAFF's Avatar
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
Default Re: WTB: SGC Stage I Exhaust Cams

Was wondering if scholtmj could run his current Jeal cams if he got his lifters coated.....Calico????
__________________
LGAFF
90 #966-150K miles-sold
92 #234-sold
1987 Callaway TT #17
1991 ZR-1 #1359
LGAFF is offline   Reply With Quote
Old 10-24-2010   #13
scholtmj
 
scholtmj's Avatar
 
Join Date: Nov 2008
Location: Grand Rapids, MI
Posts: 384
Default Re: WTB: SGC Stage I Exhaust Cams

Quote:
Originally Posted by LGAFF View Post
Was wondering if scholtmj could run his current Jeal cams if he got his lifters coated.....Calico????
Corey Henderson has Jeal cams in his car so I asked him about the durability concerns and his response was change your oil on time. He's heard about failures but has not had any issues with his own. Curiously, about the same time Marc H. put up a picture of a failed Jeal cam on his "facts and failures" section and noted he has not heard of any cams lasting more than 10k miles.

Time will tell if my lifters are in OK shape. I need to remove the passenger side header and the transmission, then the motor is ready to come out. Plus, now that Pete has good things to say about a Stg III cam in a smaller motor, I'll take the opportunity to upgrade.

Haibeck:
http://zr1specialist.com/HAT%20Web/f...%20failure.htm

I guess a good follow up question would be can you perform the correct heat treating on the cams if the lobs are still good?

Last edited by scholtmj; 10-25-2010 at 01:16 PM. Reason: Added Link
scholtmj is offline   Reply With Quote
Old 10-24-2010   #14
Pete
 
Pete's Avatar
 
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,679
Default Re: WTB: SGC Stage I Exhaust Cams

I will not agree or disagree about Jeal cams.

If you do use the Jeal cams i suggest once a year take valve/cam covers off and do a visual/inspect parts cam lobes/lifters.

I had a bad experience with them.

Pete
__________________
'91 #1635 PoloGreen 350 LT5
11.09 @ 129.27
11.04 @ 128.86
474RWHP 400RWTQ
http://www.youtube.com/watch?v=SFNFOhGGlR4
http://www.youtube.com/watch?v=ZlRIOMwaDYY
https://sites.google.com/site/peteszr1garage
Pete is offline   Reply With Quote
Old 10-24-2010   #15
LGAFF
 
LGAFF's Avatar
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
Default Re: WTB: SGC Stage I Exhaust Cams

Is the issue the hardness of the lifter?
__________________
LGAFF
90 #966-150K miles-sold
92 #234-sold
1987 Callaway TT #17
1991 ZR-1 #1359
LGAFF is offline   Reply With Quote
Old 10-24-2010   #16
Pete
 
Pete's Avatar
 
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,679
Default Re: WTB: SGC Stage I Exhaust Cams

Quote:
Originally Posted by LGAFF View Post
Is the issue the hardness of the lifter?

Yes,and the billet cam is soft.

Pete
__________________
'91 #1635 PoloGreen 350 LT5
11.09 @ 129.27
11.04 @ 128.86
474RWHP 400RWTQ
http://www.youtube.com/watch?v=SFNFOhGGlR4
http://www.youtube.com/watch?v=ZlRIOMwaDYY
https://sites.google.com/site/peteszr1garage
Pete is offline   Reply With Quote
Old 10-24-2010   #17
LGAFF
 
LGAFF's Avatar
 
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,194
Default Re: WTB: SGC Stage I Exhaust Cams

If the cams were soft how are the wearing through the lifter surface?
__________________
LGAFF
90 #966-150K miles-sold
92 #234-sold
1987 Callaway TT #17
1991 ZR-1 #1359
LGAFF is offline   Reply With Quote
Old 10-24-2010   #18
Pete
 
Pete's Avatar
 
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,679
Default Re: WTB: SGC Stage I Exhaust Cams

Quote:
Originally Posted by LGAFF View Post
If the cams were soft how are the wearing through the lifter surface?
When you wear off some of the smooth surface from the cam lobe then the lobe becomes like a stone wheel grinder and eats away at the lifter.

Pete
__________________
'91 #1635 PoloGreen 350 LT5
11.09 @ 129.27
11.04 @ 128.86
474RWHP 400RWTQ
http://www.youtube.com/watch?v=SFNFOhGGlR4
http://www.youtube.com/watch?v=ZlRIOMwaDYY
https://sites.google.com/site/peteszr1garage

Last edited by Pete; 10-25-2010 at 01:11 AM.
Pete is offline   Reply With Quote
Reply


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 08:16 PM.


Powered by vBulletin® Version 3.8.11
Copyright ©2000 - 2024, vBulletin Solutions Inc.
Copyright ZR-1 Net Registry 2020