dyno day 10-23-04

Posted: Sat Oct 23, 2004 8:57 am Post subject:

eek Brad and jason meet other people ay New Era at 9:00. SO I think the dyno shop opens at 10?
I have some things to do before I get there.

edit. B-Ross aclled them ther just got there at 10
_________________
New Era performance

01z28, M6 NA, mullet, T tops, siqqqq

Posted: Sun Oct 24, 2004 11:42 pm Post subject:

Good to see the gen5 screamin Cool

the the 78 TA put down 1208 ft lbs at the wheels

Posted: Mon Oct 25, 2004 1:05 pm Post subject:

So how did everyone else do? Doug, Johnny, Larry???

Posted: Mon Oct 25, 2004 1:23 pm Post subject:

I was hoping for higher numbers, but oh well.
Unless another one showed up late, mine was the only GP to get on the dyno. How late was everyone there?

A question though: Isn't our max HP usually somewhere over 5k RPM? (Someone say 'yes' and make me feel better Smile

)

max HP: 198.183
max TQ: 315.087

--- As Tested At ---
DYNAMX
750 Basket Rd.
Webster, NY 14580
(585)671-7047

--- Customer ---
Name : Brian Ross

--- Vehicle ---
Yr/Make/Model : 2004 / Pontiac / Grand Prix

--- Test Data ---

Engine RPM (RPM), Total Power (HP), AFR (Ratio), Engine Torque (Ft-Lbs)
2631.235, 157.855, 11.804, 315.087
2648.555, 158.432, 11.798, 314.175
2662.902, 158.737, 11.794, 313.093
2674.457, 159.099, 11.781, 312.470
2694.658, 159.804, 11.786, 311.498
2714.676, 160.421, 11.773, 310.396
2734.483, 160.986, 11.759, 309.245
...
...
...
4240.024, 196.601, 11.330, 243.524
4249.750, 197.051, 11.320, 243.525
4259.595, 197.319, 11.312, 243.295
4269.306, 197.082, 11.312, 242.450
4278.853, 197.304, 11.319, 242.181
4288.261, 197.176, 11.321, 241.496
4297.571, 197.009, 11.327, 240.771
4306.855, 196.574, 11.332, 239.721
4316.052, 196.602, 11.351, 239.240
4325.075, 195.396, 11.382, 237.272
4334.269, 195.515, 11.361, 236.913
4343.380, 198.183, 11.405, 239.643
_________________
2018 Acadia
Retired: 2014 ATS, 2004 GTP

Posted: Mon Oct 25, 2004 2:32 pm Post subject:

You have a 3.4 pulley, right? You should have had about 230hp at 5200 to 5500 rpm. Hell, my GTP with the stock pulley put down 208 to the wheels. Did they not rev high enough?
_________________
1998 Silvermist GTP Coupe
Bone stock unicorn
1998 True Green Metallic GTP Coupe
Pullied, cammed, intercooled. With a kiddie seat. It once ran a 13 flat.
1998 True Green Metallic GTP Sedan (retired)
Stock: 14.33 @ 96.5
PB: 13.89 @ 101 mph

Posted: Mon Oct 25, 2004 2:47 pm Post subject:

Yup...those numbers were with a 3.4" and the other stuff in my sig. (except the bugs--Thanks Specialty Motoring Products! Cool

)

Posted: Mon Oct 25, 2004 3:07 pm Post subject:

i have to post this on here too

the type of dyno used was a mustang dyno it Always puts out a lower/realistic number then a dynojet. aslo the operator may not have reved it high enough, he was being careful not to beat the hell out of the cars. also the car was dynoed in 3rd gear so if you have had your car on a dyno and they used 2nd gear that would give you a higher number.

brian just remember to multiply your HP number by 25%
that should get you really close to the true number
_________________
www.allstartactical.com

Posted: Mon Oct 25, 2004 3:50 pm Post subject:

Actually, add 25% (or multiply by 1.25). Wink

Which is about 247.7 HP...which is less than stock rating of 260. Sad

I can appreciate him not wanting to beat up the cars, but I would have liked something more to brag about.

Regardless of my numbers, thanks for setting it up, Brad! It was a fun day. It was even nice enough outside for me to get a little sunburn! Also learned that squirrels think LT1s make good storage facilities. Laughing

By the next time a dyno-day comes around, hopefully I'll have rockers and a PCM that's a little more fun (DHP, where are you?). And now I know what fuse to pull for ABS (thanks Johnny!), and to make sure a wider RPM range is hit.

Now I need to finally get this beast to the track.

Posted: Mon Oct 25, 2004 5:17 pm Post subject:

the GM numbers are a CRANK rating that is not what you should have at the wheels.

Posted: Mon Oct 25, 2004 5:26 pm Post subject:

I thought the aforementioned 25% was to be added to the dyno numbers to get the crank numbers to account for drivetrain loss.

So you're saying add 25% to get the real WHP, then another percentage has to be added to get the crank HP?

Posted: Mon Oct 25, 2004 5:33 pm Post subject:

i belive so but i will look into it more

Posted: Mon Oct 25, 2004 6:02 pm Post subject:

Actually I figured it out..... F-bodies have a 15% drivetrain...at least 6spd are, but they were saying to add 25% because the mustang dyno actually adds about 10% loss to the numbers.
However the GP has a factory 21% drivetrain loss, so when figureing out numbers you have to add the 21%factory loss PLUS the 10% additional loss of the Mustang Dyno.

198.183+31%=259.62 unfortunatley thats only the factory rating....but remember thats about 1300rpm lower than where the car makes it's max hp.
And yes the car was run VERY low in the rpm band because he was afraid to push the car since he was worried about the traction control kicking in and kicking him off the dyno since we couldn't figure out how to properly disable Brian's TC.

Posted: Mon Oct 25, 2004 7:07 pm Post subject:

Posted: Mon Oct 25, 2004 7:26 pm Post subject:

L man But you have a larger cam, witch move the max hp rpm up. Also the exhaust it 100% stock. Your ext setup will support you over 5K. MG what was your max hp rpm at. like 5,100? I'm going to guess the 04 is only maxing about 205 WHP on that dyno. Your 04 isn't going to make more power over 5,000
BTW there were 2 LS1 cars that have ran around 12.6 113ish only hit 310 other 330 WHP. Larrys car would be at about 285 290 but I don't think 300WHP at this place for compaison. little more tq then the LS1 cars obisly tho. hense the MPH compiored to a GTP mph.
Crazy daves 12.2 LS1 TA hit 335 at this place last month but 360 at foatian. Somthing like that brad will correct me.

Posted: Mon Oct 25, 2004 10:00 pm Post subject:

MAN! does anyone listen to me?

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