Hotcam valvespring choices
07-20-2007, 05:42 AM
#1
Hotcam valvespring choices Would there be a negative effect if I ran PRC/Patriot dual springs with the hotcam? I plan on a custom cam, but I have the availability to run a hotcam for nothing, and I don't care what most say, they make good power. I ran 12.50's in my first 99 Z with no longtubes, ls6 intake, or ported throttle body. I just don't want to install valvesprings twice unless these would be too stiff or whatever.
07-20-2007, 06:20 AM
#2
Not at all, the guy that did my tuning for my hotcam setup said he could have raised my shift point, to about 6700 if I had different springs, I got Ls6 on mine.
I made 393hp yesterday.
http://www.fquick.com/videos/viewvideo.php?id=2636
http://www.fquick.com/videos/viewvideo.php?id=2635
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I made 393hp yesterday.
http://www.fquick.com/videos/viewvideo.php?id=2636
http://www.fquick.com/videos/viewvideo.php?id=2635
__________________
07-20-2007, 08:23 AM
#3
Back in 2000, I just used the HPP3 and shifted at 6500-6600. I had the HC kit then. I may still just put some good springs in. I wonder if that would hurt the performance of the stock cam until I put a real one in. I'd be curious to hear your track times in cooler weather.
07-20-2007, 08:32 AM
#4
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PAC-1518s may make a little more power with Ti. retainers because of the lower mass.
Patriot Dual with their Ti . retainer weights 104.80 grams. PAC-1518 with Comp-772 Ti. retainer weighs 80.2 grams.
Patriot Dual with their Ti . retainer weights 104.80 grams. PAC-1518 with Comp-772 Ti. retainer weighs 80.2 grams.
07-20-2007, 08:46 AM
#5
Originally Posted by Redlinez
Back in 2000, I just used the HPP3 and shifted at 6500-6600. I had the HC kit then. I may still just put some good springs in. I wonder if that would hurt the performance of the stock cam until I put a real one in. I'd be curious to hear your track times in cooler weather.
07-20-2007, 09:41 AM
#7
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Here is the cliffnotes version in chronological order.
- PAC no longer makes Comp Springs.
- Comp has problems with new suppliers and springs start breaking.
- PAC starts selling the reliable springs it used to make for comp but under its own name/part numbers.
- PAC comes out with the next evolution of the 918 (now PAC-1218). Called the PAC-1518 which has been nitrided, nano-peened, and polished giving it more lift capability.
- Redlines sends me a PM asking where to get the best deal on PAC-1518
- PAC no longer makes Comp Springs.
- Comp has problems with new suppliers and springs start breaking.
- PAC starts selling the reliable springs it used to make for comp but under its own name/part numbers.
- PAC comes out with the next evolution of the 918 (now PAC-1218). Called the PAC-1518 which has been nitrided, nano-peened, and polished giving it more lift capability.
- Redlines sends me a PM asking where to get the best deal on PAC-1518
Last edited by Yeahdoug; 07-20-2007 at 10:06 AM.
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07-20-2007, 10:12 AM
#8
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Oh and I take that back about needing The comp Ti retainers with the PAC-1518. The steel 774 retainer only weighs 6 more grams. So even with the steel it was only 86.1 grams.
07-20-2007, 10:34 AM
#11
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Originally Posted by litle8
Well it wont hurt it thats for sure, that sounds better than Ls6 springs!