Every1 here is always saying how the stock #'s aren't correct, so has any1 dynoed a stock or a not that modded Third Gen and compared the #'s to them?? Thanks!!

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Looking For:

87 IROC-Z28 350 TPI: The car I want.

84 TRANS AM 305 H.O.: Another car that would be OK to own while I look for the IROC-Z!!

 

I plan to do this sometime in the next two weeks.

I bought my 88 IROC 5.7TPI in November and took it to the dyno shop the following weekend. The dyno was down... A week later I put on my snow tires - can't really dyno with snow tires.

This past Friday, I put my summer tires back on and will dyno the car as soon as I get a chance. I will post the results and printout on this site. Check the Racing and Autocross forum.

I will find these results very interesting.

 

I dynoed my 92Z28/305TPI/auto when it had just a SLP catback on it. My number were 191rwhp and 256rwtq. Hope that helps some.

 

ive had my stock 82 on a dyno it was about 150hp and tq220. without smog crap so i think that the factory specs are about right.
my friend had his 89 z28. 305 tbi factory roller cam .10 over pistons on the dyno and it was cranking 300hp. made me sad that my 85 with a 350 was only putting out about 320hp and dosent get nearly as good gas mileage as a 305.

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85 Camaro RS 350/350 stealth intake, holley street avenger 670
true dual exhaust. "ButtStang killer"
82 firebird 305 all original - the cat and smog crap."All show No go"

 

I had my 89 RS w/ TBI dynoed. It had about 135,000 miles and 10 years on it, a flowmaster cat-back, open-air, and a chip. The peak RWHP was 158. The thermometer in the garage where the chassis dyno was reading a little over 100 degrees and it was a high humidity day. I'd say if it was around 60 degrees with less humidity my numbers would have been higher.

Jason

 

300 HP from a 305 TBI with the stock factory cam? I smell bullcrap. How much nitrous was this? My dad's 92 RS TBI pulled 158 HP and 220 TQ at the wheels with only a K&N air filter changed, and a stock exhaust from an 85 IROC, and 190k on the clock. After converting it to TPI, it made 175 HP and 290 TQ, with 205k on the clock.

My 91 Z28 with a 305 5-speed made 195 HP and 260 TQ at the wheels, with a flowmaster catback and free mods. But later we found out two of the cylinders were bad, so it should have made more.


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West Coast GM Shootout 2001!
1991 Camaro Z28
5.7L 5-Speed (originally 305)
13.25 @ 107.18 MPH
Southern California
Member: SoCal 3rd Gen F-Bodies
Webmaster: SoCal F-Bodies
-=ICON Motorsports=-

 

To the dude thats getting his 88 350 TPI dynoed, yeah post that!! I want to see if its 230HP and 330TQ, is it all stock??

------------------
Looking For:

87 IROC-Z28 350 TPI: The car I want.

84 TRANS AM 305 H.O.: Another car that would be OK to own while I look for the IROC-Z!!

 

I think that the Tq was underated cause I was killing LS1's 0 to 60 and they are rated around the same tq as we are. But hp the LS1's always kicked my *** . But maybe its the car and driver and how well its tuned etc. I want to do it to my car with my mods right now but dont know any where around here.

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1992 Z28 W/5.7L. Teal with unpainted cowl hood,18" Billet Specialities Rims,Eibach Sportline Springs, Leather int., B&M Mega Shifter, Headman Headers, Flows,No Cats,K&N,HyperTech air foil,Custome Burned Chip,MSD Ignition,Shift Kit, Billet Corvett Servo my Back License plate reads "ALL UL C"

Here's a pic of my car
http://www.geocities.com/jonnyarson/maro.jpg

" WHAT DOES THE BACK OF A MUSTANG LOOK LIKE "

[This message has been edited by BigMike 92 Z28 (edited March 21, 2001).]

 

hello to all, I dynoed my 89 iroc about 3 weeks ago with the mods listed and a AFPR at 51 psi and turned 217 hp at the wheels, and 296 ft/lbs of torque. Not bad in my opinion. I also turned a horrible time of 15.07 at 93mph last year w/ the that power. Maybe with traction it'll be better this year. Oh and to all please check out my other post about the vibration. I can't drive until i figure it out. THnx to all and KEEP ON 'ROCING

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'89 SHAGGY IROC
L98 7r4, all free stuff,T.E.S.,HOOKER CAT BACK,KYB,ACCEL8.8,JET fan sw. etc.
so much to do , so little money

[This message has been edited by irocnroll89 (edited March 21, 2001).]

 

yeah my "uchhmm" STOCK 3rd gen makes around 400rwhp!! hope that helps!!

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89 firebird formula

356 10.5:1compression
comp cams xe262 cam
performer rpm intake
#1405 edlebrock 600
sportsman 2 heads 64cc 2.02/1.60 valves 200cc intake runner
msd 6al
h.e.i. proform 50,000 volt vac. advance ditributor
700r-4 with 3.08 first gear and 3.23 posi 7 5/8 rear end.
b trans shift kit(will kill shifts...suck dong!!)
shorty heddman hedders with custom 3" pipe y-pipe back(no damn cat!) with 40 series flowmaster!


future mods: 406 roller REALLY REALLY REALLY RADICAL!!!!!

 

IROCZTWENTYGR8 -

To respond to your question, yes the 88 IROC 5.7 TPI is basically stock. Details as follows:
- Just under 90,000 miles on the clock
- K&N
- Dynomax Cat-back

Everything else is stock. After owning this car for 5 months, it will be interesting to see what I really have. I will post the results - give me a week or two to get to the dyno shop...

 

Any update on this??

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Looking For:

87 IROC-Z28 350 TPI
The car I want.

84 TRANS AM 305 H.O.
Another car that would be OK to own while I still look for the IROC-Z!!

 

My Butt Dyno says I'm putting out about 300 RWHP and about 375 Torque!

If you want to wait a little while, I'll put on shorts instead of jeans, go strap back in and give you a more accurate number!

[This message has been edited by FlashGTA (edited April 11, 2001).]

 

What?!? My LS1 dyno'd 320ft/lbs of Torque from 2000rpm to 6000rpm a Straight Line all the way across.

I find it very hard to belive that you kept up. I know how fast your car is, I have been driven and raced them alot.

It wouldnt even be a race if you rolled up on me.



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Mike
1989 Turbo Trans-Am
11.25@121.25
Daily Driver

1998 Trans-Am LS1 6 Speed
13.10@106
Slow POS sitting in the Driveway awaiting repairs and then its For Sale. No More V8 Cars for me.

 

I dynoed my L98 GTA when it was stock just afer I buy it. The clayton 550hp chassi dyno gime 209rwhp and 315lb of torque. Since that I've do some mods and a lot of dyno tuning and my last run rate me at 271rwhp/4400RPM with aprox 345lb/ft, I don't exactly remember the Tq number.

The dyno operator tell me that a stock L98 thirdgen put between 205 and 215 rwhp.

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89 L98 GTA
- Custom made air induction
- Ported plennum
- MAF screen removed
- Headman Hedders
- Dynomax 3" catback
- Ultra Flow weld muffler
- TH700-R4 with vette servo and Superior shift kit
- Mobil 1 Synthetic Oil
-------------------------
Soon: Spohn SFC

 

how much is lost through the drive line? like 40 horse? i'm sure it is way different between automatic and manual cars. manual trannies absorb less power. on the average how much is lost?

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86 IROCZ
T-Tops
700R4
305 TPI
3.23 gears
shift kit, manual TC switch, manual fan switch, flowmaster exhaust with edelbrock TES headers& hollow cat, gutted MAF.

[This message has been edited by raging86 (edited April 12, 2001).]

 

IM NOT SURE ON THE EXACT NUMBERS BUT I DO KNOW THAT AUTOMATICS TEND TO LOSE MORE POWER THROUGH THE DRIVETRAIN THAN MANUALS.

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91 camaro RS
- 305 TBI
Mods: Performer tbi intake, 1" TBI spacer, K+N, jet fan switch ,160 thermo,Accel control module, Jet Stage 2 chip, edelbrock TES headers, Compleate 3" Flowmaster exhaust, Edelbrock springs, KYB struts and shocks, 700R4 built by TSI, SLP tq converter

Soon to come .SLP Posi 323 rear end , Spohn LCA's and panhard bar , Ascd ram air hood, Z28 spoiler and grille , white guage faces.

 

About 15% manual, 20% automatic.

 

i have 900 rwhp and 1050 lbs tq............swear i do......yeah swearit.........................hehehe ok not. but a brother can dream cant he

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1983 CHEVROLET CAMARO with a 1986
305 C.I.D.V8 BORED .030 OVER
HIGH VOLUME OIL PUMP
FLAT-TOP PISTONS
MILD CAM
EQUAL-LENGTH HEADERS
3" CAT BACK EXHAUST W/ FLOWMASTER MUFFFLER
KEYSTONE CLASSIC WHEELS.
TH350 TRANNY
B&M RATCHET SHIFTER
STAGE THREE SHIFT KIT
(she'll spin em into third)

"Wise man once say, friends dont let friends drive Fords!!"