Cartek 3X cam adds ~26 RWHP/6 RWTQ over B1 cam in my application!
05-24-2004, 07:20 PM
#1
Cartek 3X cam adds ~26 RWHP/6 RWTQ over B1 cam in my application! I just changed out cams in my new Forged LS6 motor with LPE's CNC'd Stage III LS6 heads and gained roughly 26 RWHP & 6 RWTQ using the same dyno just one day apart (I actually changed cams while still strapped to the dyno!). The motor has Diamond custom milled pistons to accomodate LPE's 58.5cc combustion chamber which makes the final static compression 11.1:1. All other mods in signature.
Unfortunately I couldn't get my dyno run 28 to print properly so I used dyno run 29 for the comparison where I bumped the timing from 30 to 31 and lost 1 RWHP but gained 2 RWTQ. The final numbers were 440/386 (run 28 not shown) for the 3X cam and 414/382 (run 14) for the B1 in this motor. Both these numbers seem low for my combination so I am working with LPE to see if there is a better camshaft suited for these cylinder heads.
To give the B1 the benefit of the doubt, I made 14 runs trying to fine tune it to this combo and 414/382 was as good as it got. I experimented with the 3X using the base B1 tuning and then changed timing in 1 degree increments and also tweaked A/F as you can see by the graph below.
As for the sound.....I must say the 3X is verrrrrrrrrrrry nice...unfortunately it's no sleeper even though Cartek hasn't published spec's. Dave Busch has publically stated that the numbers are roughly low 230's for duration and around 0.600" lift. For those that can't resist and want to hear a very nice idle click here! The other cool thing is that this cam actually has about the same basic street manners as the B1 when driving it through parking lots or down the road even though it is considerably larger. On top of this, I have done zero tuning to the idle qualities and no drilled TB! As you can see by the power curve, it loses nothing to the B1 where it counts....only gains! Throttle response is very nice and crisp too. For those wanting one more cam to consider I would highly endorse this cam as a real winner with a proven record (501 RWHP in Brent O2's ZO6 C5 running mid to high 10's through full exhaust!).
Here's the dyno graph below:
Unfortunately I couldn't get my dyno run 28 to print properly so I used dyno run 29 for the comparison where I bumped the timing from 30 to 31 and lost 1 RWHP but gained 2 RWTQ. The final numbers were 440/386 (run 28 not shown) for the 3X cam and 414/382 (run 14) for the B1 in this motor. Both these numbers seem low for my combination so I am working with LPE to see if there is a better camshaft suited for these cylinder heads.
To give the B1 the benefit of the doubt, I made 14 runs trying to fine tune it to this combo and 414/382 was as good as it got. I experimented with the 3X using the base B1 tuning and then changed timing in 1 degree increments and also tweaked A/F as you can see by the graph below.
As for the sound.....I must say the 3X is verrrrrrrrrrrry nice...unfortunately it's no sleeper even though Cartek hasn't published spec's. Dave Busch has publically stated that the numbers are roughly low 230's for duration and around 0.600" lift. For those that can't resist and want to hear a very nice idle click here! The other cool thing is that this cam actually has about the same basic street manners as the B1 when driving it through parking lots or down the road even though it is considerably larger. On top of this, I have done zero tuning to the idle qualities and no drilled TB! As you can see by the power curve, it loses nothing to the B1 where it counts....only gains! Throttle response is very nice and crisp too. For those wanting one more cam to consider I would highly endorse this cam as a real winner with a proven record (501 RWHP in Brent O2's ZO6 C5 running mid to high 10's through full exhaust!).
Here's the dyno graph below:
05-24-2004, 08:01 PM
#2
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John,
Those are nice numbers. You may be on track believing the numbers are a bit low, as I made 432rwhp and 398rwtq on my B1 cam'd WS6 through high flow cats and a open Borla. I had the old hand ported stage II MTI's on that car.
Todd
Those are nice numbers. You may be on track believing the numbers are a bit low, as I made 432rwhp and 398rwtq on my B1 cam'd WS6 through high flow cats and a open Borla. I had the old hand ported stage II MTI's on that car.
Todd
05-24-2004, 08:41 PM
#3
You may be on track believing the numbers are a bit low, as I made 432rwhp and 398rwtq on my B1 cam'd WS6 through high flow cats and a open Borla. I had the old hand ported stage II MTI's on that car.
