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06-11-2015, 01:06 PM #1
- Join Date
- Jun 2015
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- Indiana
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- 3
Silver- 1999 C5
Do these dyno results seem right?
Hi to all, first post on this forum!
I have a 99 C5 with a vararam, AR longtubes, high flow cats, x pipe and corsa Indy exhaust. I decided to have it tuned a few years ago and the car runs great. I was looking at the results of the dyno pull and it showed over 400 HP/348 TRQ at the wheels with just the mods shown above. Those results seem pretty good (actually pretty high from what I have seem of others) for the mods that I have and I just wanted to ask if these are typical results with these types of mods?
I would post the dyno results but don't know how to attach a file.
Thanks
Dave
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06-11-2015, 01:20 PM #2
- Join Date
- Feb 2009
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- Florida Man Status Acheivement
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- 11,759
Navy Blue Metallic- 98 T/A w/ mods, 00 FBVert
Looks about right, is it a manual or auto transmission? Manuals tend to dyno a little higher in numbers.
http://www.ls1.com/forums/f7/my-6-liter-build-174257/
http://www.ls1.com/forums/f8/my-8-8-rear-build-165553/
6.0L Block - Forged 403ci , Polluter Stg3 Cam, FAST 102mm Intake, NW102 TB, MSD wires, NGK TR6 plugs, Truck Coil Packs, LS3 Fuel Injectors, CC Pacesetter LT Headers, TS&P ORY, QTP e-Cutout, Magnaflow Muffler, 104mm Air Lid & Line Lock, Catch Can, Stage 2 T56 w/Viper shaft, PRO 5.0 Shifter, Tick MC, SPEC Stg3+ Clutch, QT SFI BH, MWC DSL, Full UMI Performance Suspension, Belstein Shocks, Hotchkis Springs (1" Drop), YR1 Snowflake Wheels wrapped in NT555 tires & Custom Fab Ford 8.8 rear w/Wavetrac Diff 3.73 Yukon Gears, WSQ Hood, 3"CM Strange Eng Drive Shaft.
00 FB Vert - Stock
78 FB - Just getting started......
Horsepower never lies, but is often lied about!
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06-11-2015, 03:22 PM #3
- Join Date
- Jun 2011
- Location
- Branchville, NJ
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- 3,111
Silver & Blue- 02 Camaro SS, 04 GTO
It seems very high to me. A stock C5 vette has 345 hp at the crank which translates to about 290 rwhp. To get over 400 rwhp you would need to have about 480 hp at the crank. An intake and exhaust system with tuning will give you 60 to 70 hp max. So lets say you have 415 hp at the crank with your mods. That will give you about 353 rwhp. I don't know where you would get the extra 50 rwhp.
My ride is a 2002 Camaro SS SLP #3296 with 30k, LTH, 3" Y, CME, Frost tune, K&N, ported TB, Blackwing lid, Bellows, MSD, Denso Iridium, and 85mm MAF, Bilsteins, Eibach springs, SLP strut brace, Adj. Panhard, TA Girdle, UMI, Pro 5.0, Nitto NT555
My wife has a 2004 GTO with the rare SAP, 18" wheels, K&N Cold Air System, MSD, Ported TB, Frost tune, Denso Iridium, Flowmaster cat-back, 3200 Yank, 75k
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06-11-2015, 06:34 PM #4
- Join Date
- Jun 2015
- Location
- Indiana
- Posts
- 3
Silver- 1999 C5
Yea it does seem high. Ultimately the car is very fast so I'm not going to worry about it. I would like to put a blower on but yikes they are expensive.
Dave
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06-12-2015, 04:40 AM #5
Probably a happy dyno, not all that unusual. Odd to see a big spread in HP and TQ though on an internally stock engine. Tells me something is amiss.
Usually you'll see the otherwise stock C5 Z06's, with long tubes, exhaust, air intakes, and a good tune hit the 370-400 RWHP realm so to see a 99 C5 modified the same way hit those numbers is a little optimistic. I would say a setup like yours would likely see HP numbers much closer to the TQ numbers you have.
Best way to find out is hit the track and see if the ET/MPH runs in line with the HP you're seeing on the dyno verses the weight of the car and track conditions. That will tell you right away.
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06-12-2015, 04:32 PM #6
- Join Date
- Jun 2015
- Location
- Indiana
- Posts
- 3
Silver- 1999 C5
Thanks for all the replies!
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12-30-2015, 01:00 PM #7
That's way high, most people are bearly if at all pulling 400 whp with a 228/230ish cam and headers and tune.. a stock z06 won't even pull that.
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01-04-2016, 10:38 AM #8
stock Z06 will dyno at about 355 to the wheels so you with a non z06 pulling 400 with bolt-ons is high to me
98' Trans AM RIP
00' WS6/Black/Pacesetter LT's/Magnaflow Exhaust/SLP lid/Nick Williams 92mm TB/FAST 92 Intake/BMR Strut Tower Brace/BMR Rear LCA's/BMR Panhard Bar
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01-04-2016, 03:56 PM #9
- Join Date
- Aug 2007
- Location
- Greensboro, NC
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- 39
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- 1,335
Pewter- 2002 Trans Am WS6 M6
Seems like a happy dyno. But that is a odd hp/tq spread.
Mods - Lid, Skip Shift Eliminator, MGW shifter, UMI SFCs, Founders Lower Control Arms, Founders Panhard Bar, Founders Adj. Torque Arm, UMI Torque arm mount, MWC Drive shaft safety loop, KONI Yellows, Strano Springs, Strano Sway bars, UMI Upper and lower A Arms, 160 thermostat, TSP headers and TSP true duals Monster stage 2 clutch, racetronix fuel pump, Strange S60 rear axle and tune by Frost.
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