2001 Z06 Cam install = 30 RWHP
May 6, 2007 | 11:15 PM
#1
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From: Las Vegas
2001 Z06 Cam install = 30 RWHP
Just get through installing a free 
2001 Z06 cam and new 2006 Z06 valve springs (not free but cheap) in my 5.3 liter 2003 Z71. Base line with JBA shorty headers and Cat Back, plus a volant air intake was 236 RWHP. After cam install the RWHP was 266 
It was very interesting watching the 275 70 R 16 off road tires at 6000 rpm in third gear. Looked like a top fuel tire at 300 mph. I lost a little power below 3000 rpm, but I think with some road tuning I can get that back. I suspect that my DCR is s bit low becasue that cam was designed for a 10.5 to 1 CR. The truck idles glass smooth. Bottom line: Free cam + a little elbow grease = 30 HP 
2001 Z06 cam and new 2006 Z06 valve springs (not free but cheap) in my 5.3 liter 2003 Z71. Base line with JBA shorty headers and Cat Back, plus a volant air intake was 236 RWHP. After cam install the RWHP was 266 It was very interesting watching the 275 70 R 16 off road tires at 6000 rpm in third gear. Looked like a top fuel tire at 300 mph. I lost a little power below 3000 rpm, but I think with some road tuning I can get that back. I suspect that my DCR is s bit low becasue that cam was designed for a 10.5 to 1 CR. The truck idles glass smooth. Bottom line: Free cam + a little elbow grease = 30 HP
May 6, 2007 | 11:41 PM
#3
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From: Las Vegas
It was tuned. Actually, most of the stock Z71 4X4's dyno here in Las Vegas in the low 200's. I suspect that the power loss through the automatic transmission, transfer case, and large tires is significant. Before the cam change I did not have any trouble keeping up with the 300 HP Triton Fords. Additionally, I have not lost any gas mileage. IMHO I think gaining 30 HP with mild cam only is a good thing.
Last edited by Vegas Panton; May 6, 2007 at 11:57 PM.
May 6, 2007 | 11:43 PM
#4
Originally Posted by Vegas Panton
It was tuned. Actually, most of the stock Z71 4X4's dyno here in Las Vegas in the low 200's. I suspect that the power loss through the automatic transmission, transfer case, and large tires is significant. Before the cam change I did not have any truoble keeping up with the 300 HP Triton Fords. Additionally, I have not lost any gas mileage. IMHO I think gaining 30 HP with mild cam only is a good thing.
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May 7, 2007 | 07:20 PM
#10
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From: Las Vegas
More Z06 cam info
Just got home from work. Thanks for all the replies. I have made several attempts to post the before and after dyno sheets. 
I will try agian later. The pre (236 HP) and post (266 HP) cam install RWHP are corrected and the A/F ratios are good. I did have one question as to why a volant air intake system would cause a loss of low end power?? I will read the FAQ again about attachments and hopefully I can figure out how to attach the dyno sheets from my pictures??
I will try agian later. The pre (236 HP) and post (266 HP) cam install RWHP are corrected and the A/F ratios are good. I did have one question as to why a volant air intake system would cause a loss of low end power?? I will read the FAQ again about attachments and hopefully I can figure out how to attach the dyno sheets from my pictures??
