05-29-2015, 02:22 AM | #1 |
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Join Date: Nov 2007
Location: Bay Area, Ca
Posts: 2,841
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On the dyno in the am
Putting the truck on the dyno again in the morning. Changes since last time:
Cam went from 254/260 .630/.625 111icl 112lsa to 259/274 .663/.624 109 icl 113 lsa Gear change 4.56 to 3.90 The truck also lost 80lbs, not that that affects the dyno numbers but it slowed down NA from 10.38 @ 127 to 10.6x @ 126mph. 60' slowed from 1.53 to 1.61. 1/8 mph went from 105.x to 103. I know different air will have an effect as well.. It did go faster than it ever has though on bottle. Thoughts on the slow down: Cam has more overlap and opens the exhaust valve quite a bit earlier and is much more of a N20 cam. I am guessing it moved peak TQ further up RPM making the verter even less optimized NA. Gear also slowed 60' down. With the glides shift extension again slowing it down more due to TQ peak and recovery Perhaps I need to move the 1-2 shift up in RPM, the dyno will help tell me that. I guess i will find out in the morning. If the cam doesn't make more on the bottle than last time, I will most likely switch back or try another one I have 251/266 .632/.597 108icl 112lsa. We will see..
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------Motor---------------Bottle 60'---1.53---------------1.41 1/8---6.58 @ 105.92----5.87 @ 118.41 1/4---10.38 @ 126.97----9.24 @ 142.49 |
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