Fastest cam only LS1 contender!
Teching In
Joined: May 2006
Posts: 36
Likes: 0
From: Colorado
Hummn torque peaks at 3500 and only goes down from there with a car that has a non-lockup 5300 converter....Does not make much sense to me...I had a mild cam/nitrous combo that dynoed like that years ago...
LOL, some of you guys don't understand torque multiplication of a torque converter. Had SUX2BU started his dyno run even earlier, the torque would have followed the line at the upward angle to the lower rpm scale. Probably like 600 lb ft of torque!
Basically, if he's got a converter with a 2.5 stall torque ratio, the converter will multiply the engine torque 2.5 times at the initial hit. The only happens right at the launch, then the torque will fall as the speed of the turbine approaches the speed of the tranny output shaft. Once coupled up (you can see it at 5800 rpm), the torque curve will more closely mirror a manual transmission. Should be a lethal combination! Good luck!
Basically, if he's got a converter with a 2.5 stall torque ratio, the converter will multiply the engine torque 2.5 times at the initial hit. The only happens right at the launch, then the torque will fall as the speed of the turbine approaches the speed of the tranny output shaft. Once coupled up (you can see it at 5800 rpm), the torque curve will more closely mirror a manual transmission. Should be a lethal combination! Good luck!
__________________
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.
Originally Posted by Patrick G
LOL, some of you guys don't understand torque multiplication of a torque converter. Had SUX2BU started his dyno run even earlier, the torque would have followed the line at the upward angle to the lower rpm scale. Probably like 600 lb ft of torque!
Basically, if he's got a converter with a 2.5 stall torque ratio, the converter will multiply the engine torque 2.5 times at the initial hit. The only happens right at the launch, then the torque will fall as the speed of the turbine approaches the speed of the tranny output shaft. Once coupled up (you can see it at 5800 rpm), the torque curve will more closely mirror a manual transmission. Should be a lethal combination! Good luck!
Basically, if he's got a converter with a 2.5 stall torque ratio, the converter will multiply the engine torque 2.5 times at the initial hit. The only happens right at the launch, then the torque will fall as the speed of the turbine approaches the speed of the tranny output shaft. Once coupled up (you can see it at 5800 rpm), the torque curve will more closely mirror a manual transmission. Should be a lethal combination! Good luck!
Mods are as follows.
Kooks 1 7/8" w/ a Magnaflow on each collector
FAST 90mm intake w/ TPIS 90mm TB
ASP pulley w/ short belt
Granatelli 85mm MAF
Lid with my own custom "SUX2BU" ram air
T rex cam w/ Patriot golds shimmed .045" & 7.425 Comp pushrods
Turbo action 8" 5300 stall
spooled, 4.10ed, 31 spline axled 8.8 rear end
28x10.5 ET Drags on 15x 10 Draglites.
Kooks 1 7/8" w/ a Magnaflow on each collector
FAST 90mm intake w/ TPIS 90mm TB
ASP pulley w/ short belt
Granatelli 85mm MAF
Lid with my own custom "SUX2BU" ram air
T rex cam w/ Patriot golds shimmed .045" & 7.425 Comp pushrods
Turbo action 8" 5300 stall
spooled, 4.10ed, 31 spline axled 8.8 rear end
28x10.5 ET Drags on 15x 10 Draglites.
TECH Addict
Joined: Jul 2002
Posts: 2,906
Likes: 0
From: Somewhere I Belong
Originally Posted by Patrick G
the torque curve will more closely mirror a manual transmission. Should be a lethal combination! Good luck!
peace
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Verdad Gallardo Teching In
Joined: May 2006
Posts: 36
Likes: 0
From: Colorado
Originally Posted by Patrick G
LOL, some of you guys don't understand torque multiplication of a torque converter. Had SUX2BU started his dyno run even earlier, the torque would have followed the line at the upward angle to the lower rpm scale. Probably like 600 lb ft of torque!
Basically, if he's got a converter with a 2.5 stall torque ratio, the converter will multiply the engine torque 2.5 times at the initial hit. The only happens right at the launch, then the torque will fall as the speed of the turbine approaches the speed of the tranny output shaft. Once coupled up (you can see it at 5800 rpm), the torque curve will more closely mirror a manual transmission. Should be a lethal combination! Good luck!
Basically, if he's got a converter with a 2.5 stall torque ratio, the converter will multiply the engine torque 2.5 times at the initial hit. The only happens right at the launch, then the torque will fall as the speed of the turbine approaches the speed of the tranny output shaft. Once coupled up (you can see it at 5800 rpm), the torque curve will more closely mirror a manual transmission. Should be a lethal combination! Good luck!
That does make sense..My experience with dynos are a little old school, use an engine dyno, pick a converter, drop it all in the car and then head to the track.
LS1TECH Sponsor
Joined: Sep 2004
Posts: 274
Likes: 0
From: Houston
Originally Posted by Smokinstorm
Don't get too excited about the torque reading guys. Big unlocked converters do that on the dyno when you first nail the throttle. My bolt on dyno graph looks almost like that because of my converter though it's obviously not quite as high as that, espcially in the horsepower department. The horsepower is amazing through that converter, gears and tires. Even though the TH350 is supposed to soak up less horsepower than the 4L60e transmission, it's still way down on power compared to a M6. I'd guess this would have gone well over 450 through a manual transmission even with the gears and tires used. Congrats on what's surely to be a contender to the cam-only record.
Originally Posted by BAIN
It's an auto with a big stall that's why the TQ is so high it flashes on the dyno.
Here's my graph if you're curious. As you can see, there is no tq spike. http://img.photobucket.com/albums/v6.../Dyno_2006.jpg
DOESNTSUCK2BU, which lid are you using? Also, I'm a little surprised those 1-7/8 headers didn't hurt you. What's your raceweight again? I predict low low 10's.
Originally Posted by PewterZ28
That's odd, my torque numbers did not do that either of the two times I dynoed. It measured torque and horsepower from 4900 all the way to 6950 just like a window shot from a M6 dyno. I have a 8" 4900 converter.
Here's my graph if you're curious. As you can see, there is no tq spike. http://img.photobucket.com/albums/v6.../Dyno_2006.jpg
DOESNTSUCK2BU, which lid are you using? Also, I'm a little surprised those 1-7/8 headers didn't hurt you. What's your raceweight again? I predict low low 10's.
Here's my graph if you're curious. As you can see, there is no tq spike. http://img.photobucket.com/albums/v6.../Dyno_2006.jpg
DOESNTSUCK2BU, which lid are you using? Also, I'm a little surprised those 1-7/8 headers didn't hurt you. What's your raceweight again? I predict low low 10's.
I'm keeping it in daily driver trim. the only thing i take out at the track are the floor mats, the rear hatch divider and whatevers in the trunk(i leave the passenger seat and harness in).
It should be around 2900-2950 lbs.
Originally Posted by PewterZ28
That's odd, my torque numbers did not do that either of the two times I dynoed. It measured torque and horsepower from 4900 all the way to 6950 just like a window shot from a M6 dyno. I have a 8" 4900 converter.
Here's my graph if you're curious. As you can see, there is no tq spike. http://img.photobucket.com/albums/v6.../Dyno_2006.jpg
DOESNTSUCK2BU, which lid are you using? Also, I'm a little surprised those 1-7/8 headers didn't hurt you. What's your raceweight again? I predict low low 10's.
Here's my graph if you're curious. As you can see, there is no tq spike. http://img.photobucket.com/albums/v6.../Dyno_2006.jpg
DOESNTSUCK2BU, which lid are you using? Also, I'm a little surprised those 1-7/8 headers didn't hurt you. What's your raceweight again? I predict low low 10's.
mine did the same thing with a small cam and a 3000 stall
http://img.photobucket.com/albums/v5.../DynoSheet.jpg
an unlocked stall will do that
http://img.photobucket.com/albums/v5.../DynoSheet.jpg
an unlocked stall will do that
Very impressive.
But let's see what that thing will do in the real world.
Please keep us posted.
This is definitely one of the more interesting things going on here at this time!!
But let's see what that thing will do in the real world.
Please keep us posted.
This is definitely one of the more interesting things going on here at this time!!
