dyno gains with kooks and ported fast
Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
dyno gains with kooks and ported fast the run down.
140,000 mile old stock bottom end LS1. patriot stage 2 ls6 heads unmilled with .040 gasket. patric G 231/239 .617/.623 111+2 cam. ported fast 90mm with NW throttle body. underdrive pulley, intake, kooks 1 1 7/8 stepped to 2" headers with true dual 3" with x and bullets.
dyno was done in third locked through 4.10 gears and 305/45-18 tires(29" tires)
only changes from previous dyno is kooks headers with true dual over pacesetters and single 3"...and a ported fast 90mm instead of the LS6 with ported stock throttle body. same dyno, and worse weather this time.
the numbers seem great, but the track doesnt agree
sorry about the cell phone quality graphs
down low gains:
up top gains:
140,000 mile old stock bottom end LS1. patriot stage 2 ls6 heads unmilled with .040 gasket. patric G 231/239 .617/.623 111+2 cam. ported fast 90mm with NW throttle body. underdrive pulley, intake, kooks 1 1 7/8 stepped to 2" headers with true dual 3" with x and bullets.
dyno was done in third locked through 4.10 gears and 305/45-18 tires(29" tires)
only changes from previous dyno is kooks headers with true dual over pacesetters and single 3"...and a ported fast 90mm instead of the LS6 with ported stock throttle body. same dyno, and worse weather this time.
the numbers seem great, but the track doesnt agree
sorry about the cell phone quality graphsdown low gains:
up top gains:
Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
yes the correction is in STD (like it says in the top right). i posted the STD numbers because they printed them with the low HP/TQ gains and the High HP/TQ gains.
the SAE numbers of the motor was 430.13 HP and 396.10 tq.
the SAE numbers of the motor was 430.13 HP and 396.10 tq.
ouch!!
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Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
i told him to. been shifting 6900 to 7100 for about 5 years now. now i know i dont need to go any farther than 68 or 6900. and the rev limiter is at 7300. i told him to go until it touched the limiter.
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Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
possibly weather, possibly gearing. running 4.10 gears right now...thinking about some 4.56 gears. race weight of 4500 lbs.
last time at the track my shiftpoint showed to go from 7190 to 5358 on the 2-3 shift and i crossed the trapps at 5200rpm locked...out of the power. 4.56 should put me across the line around 5800rpm locked. then i have the nitrous that i have to worry about running out of gear on.
last time at the track my shiftpoint showed to go from 7190 to 5358 on the 2-3 shift and i crossed the trapps at 5200rpm locked...out of the power. 4.56 should put me across the line around 5800rpm locked. then i have the nitrous that i have to worry about running out of gear on.
Thread Starter
Joined: Jan 2005
Posts: 15,713
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From: Humble Texas
12.40@108 N/A on the current setup.
60' is 1.67 to 1.72 N/A. the truck has 2 nitrous kits on it too but i havent flipped the switch in a while.
my best track time was 12.19@110 N/A with a 1.69 60'. that was with the 226/226 112+4 cam, ls6 manifold and pacesetter/single 3" exhaust (ORY). it was a COLD night though. -1500 DA or some crazy crap like that.
the dyno numbers at that time were around 390 tq and 410 HP uncorrected.
even still, i dont see why i dont trap a higher MPH. from 5500+ i am making more power everywhere in the graph. not just peak. 4.56 gear should put me higher into my power band though. hopefully i can gain in the 60' and mph dept with a taller gear.
60' is 1.67 to 1.72 N/A. the truck has 2 nitrous kits on it too but i havent flipped the switch in a while.
my best track time was 12.19@110 N/A with a 1.69 60'. that was with the 226/226 112+4 cam, ls6 manifold and pacesetter/single 3" exhaust (ORY). it was a COLD night though. -1500 DA or some crazy crap like that.
the dyno numbers at that time were around 390 tq and 410 HP uncorrected.
even still, i dont see why i dont trap a higher MPH. from 5500+ i am making more power everywhere in the graph. not just peak. 4.56 gear should put me higher into my power band though. hopefully i can gain in the 60' and mph dept with a taller gear.
You answered your own question. If you don't make big gains over your old cam until 5500 rpm (and you're only trapping at 5200 rpm), you're not going to see the big gains. Honestly, I think you'll go quicker by shifting closer to 6700-6800 rpm and keeping the converter unlocked. This way, you'll allow the torque converter stator to multiply torque a little longer and slip you to your powerband a little faster. In my experience, locking the torque converter only helps if you're above peak power by the time you trap, not way before your peak.
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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.
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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.
Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
i tried different lock points and going completely unlocked anywhere from 6800rpm to 7200 rpm...they all made the same times and MPH. it "FEELS" much better locked though. the track says its the same though lol.
unlocked i trap 108 MPH at 5800 RPM.
i have never dyno'd with the nitrous though. ive heard that it makes the peak power and torque pull back? is there any truth to this? like, i peak around 6500 right now N/A, would i peak at 6200 with a 200 shot?
unlocked i trap 108 MPH at 5800 RPM.
i have never dyno'd with the nitrous though. ive heard that it makes the peak power and torque pull back? is there any truth to this? like, i peak around 6500 right now N/A, would i peak at 6200 with a 200 shot?
have you logged it running down the track?
in addition to the advice that Pat gave,i would log it to check for timing/fueling issues..or maybe converter issues
sometimes you don't get the same power at the track you got when dynoed..don't ask me how i know
in addition to the advice that Pat gave,i would log it to check for timing/fueling issues..or maybe converter issues
sometimes you don't get the same power at the track you got when dynoed..don't ask me how i know
Nope,air fuel is fine.We added alittle fuel and pulled alittle,that made it worse.With a few more degrees of spark it helped it but anymore and it made even worse again.So apparently it was best where it is at.
Stuart and I will be spending more time on the dyno shortly I am very sure.
Stuart and I will be spending more time on the dyno shortly I am very sure.
Thread Starter
Joined: Jan 2005
Posts: 15,713
Likes: 7
From: Humble Texas
yeah, we have dyno logs, track logs, street logs, and logs of logs lol. this was the first time on the dyno. i was surprised how close charlie had it nailed down with a street tune. we squeezed a tiny bit more out of it with 1* less timing but not enough to see it on the track IMO. every time we tried something it lost power. we only got to play with the tune for 3 pulls.