07-25-2010 | #11 |
Join Date: Jul 2005
Location: Basel/Switzerland
Posts: 152
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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 |
10-24-2010 | #12 |
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,195
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Re: WTB: SGC Stage I Exhaust Cams
Was wondering if scholtmj could run his current Jeal cams if he got his lifters coated.....Calico????
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
10-24-2010 | #13 | |
Join Date: Nov 2008
Location: Grand Rapids, MI
Posts: 384
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Re: WTB: SGC Stage I Exhaust Cams
Quote:
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 02:16 PM. Reason: Added Link |
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10-24-2010 | #14 |
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,676
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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
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'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 |
10-24-2010 | #15 |
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,195
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Re: WTB: SGC Stage I Exhaust Cams
Is the issue the hardness of the lifter?
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
10-24-2010 | #16 |
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,676
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Re: WTB: SGC Stage I Exhaust Cams
Yes,and the billet cam is soft. Pete
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'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 |
10-24-2010 | #17 |
Join Date: Mar 2007
Location: Crystal Lake, IL
Posts: 7,195
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Re: WTB: SGC Stage I Exhaust Cams
If the cams were soft how are the wearing through the lifter surface?
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LGAFF 90 #966-150K miles-sold 92 #234-sold 1987 Callaway TT #17 1991 ZR-1 #1359 |
10-25-2010 | #18 | |
Join Date: Dec 2003
Location: Chicagoland,IL
Posts: 2,676
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Re: WTB: SGC Stage I Exhaust Cams
Quote:
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 02:11 AM. |
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