Yella Terra Ultra-Light results
05-19-2007, 03:51 PM
#1
New final number on my setup and Yella Terra Ultra-Light results I have been having fun going back to the dyno after each mod. I expected the rockers to show no gains, except maybe 1 or 2 hp which is not really measureable, just got them for reliability.
People have been asking the question a lot around here, so I went back with that being the only change. Preload was set to the same as before as well. Fueling was also the same.
5 hp from about 5400 and up
Here is what I ended up with, just played around with some fueling and timing, now that I finally had some time to mess with it. Only thing left is to get the fueling leaner at 4200 to get that dip to a minimum.
480 rwhp
437 rwtq
No smoothing on graphs to take out false peaks at the end of the run.
People have been asking the question a lot around here, so I went back with that being the only change. Preload was set to the same as before as well. Fueling was also the same.
5 hp from about 5400 and up
Here is what I ended up with, just played around with some fueling and timing, now that I finally had some time to mess with it. Only thing left is to get the fueling leaner at 4200 to get that dip to a minimum.
480 rwhp
437 rwtq
No smoothing on graphs to take out false peaks at the end of the run.
Last edited by WS6FirebirdTA00; 05-19-2007 at 04:53 PM.
05-19-2007, 05:35 PM
#5
Great info Mike. Can't wait 'til my new mods are installed! Nice report. Glad you gained power.
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2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
2013 Corvette Grand Sport A6 LME forged 416, Greg Good ported TFS 255 LS3 heads, 222/242 .629"/.604" 121LSA Pat G blower cam, ARH 1 7/8" headers, ESC Novi 1500 Supercharger w/8 rib direct drive conversion, 747rwhp/709rwtq on 93 octane, 801rwhp/735rwtq on race fuel, 10.1 @ 147.25mph 1/4 mile, 174.7mph Half Mile.
2016 Corvette Z51 M7 Magnuson Heartbeat 2300 supercharger, TSP LT headers, Pat G tuned, 667rwhp, 662rwtq, 191mph TX Mile.
2009.5 Pontiac G8 GT 6.0L, A6, AFR 230v2 heads. 506rwhp/442rwtq. 11.413 @ 121.29mph 1/4 mile, 168.7mph TX Mile
2000 Pewter Ram Air Trans Am M6 heads/cam 508 rwhp/445 rwtq SAE, 183.092 TX Mile
2022 Cadillac Escalade 6.2L A10 S&B CAI, Corsa catback.
2023 Corvette 3LT Z51 soon to be modified.
Custom LSX tuning in person or via email press here.
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preciate it 
lol 
05-19-2007, 09:36 PM
#14
Originally Posted by BLK02TA
Not bad. So what else is the benefit? Quicker rev or anything?
05-19-2007, 11:06 PM
#16
Originally Posted by WS6FirebirdTA00
They are more rigid, so you get less deflection (which I cannot say that the stockers even do deflect, just an assumption based on the design), they have roller tips, and from what I hear, I dont have to worry about losing the needle bearings and finding them in my motor lol So pretty much, better valve train stability.
Good info Mike.....way to do some real R&D of late.
And its nice to make some more power in addition to adding some reliability. While I haven't had the time to do my own independent test similar to yours, I had a hunch they would be worth a few ponies.
Cheers,
Tony
05-19-2007, 11:54 PM
#17
Originally Posted by WS6FirebirdTA00
thanks man, between that and the 13/15 loss from the rear (22 ft lbs loss at 3000 rpm), this little cam is doing pretty damn good for me 
05-20-2007, 07:43 AM
#19
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These were the 6645's correct?
It's not surprising the gain yielded; I expected as much if not a tad more.
Less friction and better design, as Tony and others already stated, would naturally lead to less parasitic loss; hence the 5 pony gain
I can't WAIT to put mine in now
It's not surprising the gain yielded; I expected as much if not a tad more.
Less friction and better design, as Tony and others already stated, would naturally lead to less parasitic loss; hence the 5 pony gain
I can't WAIT to put mine in now
05-20-2007, 07:45 AM
#20
Originally Posted by Tony Mamo @ AFR
All of the above is true hence the additional power gain.....some of it simply from reduced friction at the higher RPM's.
Good info Mike.....way to do some real R&D of late.
And its nice to make some more power in addition to adding some reliability. While I haven't had the time to do my own independent test similar to yours, I had a hunch they would be worth a few ponies.
Cheers,
Tony
Good info Mike.....way to do some real R&D of late.
And its nice to make some more power in addition to adding some reliability. While I haven't had the time to do my own independent test similar to yours, I had a hunch they would be worth a few ponies.
Cheers,
Tony
I wanted to go in assuming nothing, so either way I would be happy
