87 IROC Z vs Grand National vs 5TH Gen V6... - Camaro5 Chevy Camaro Forum / Camaro ZL1, SS and V6 Forums

BlaqWhole · 06-04-2012, 09:28 AM

I'd like to see an IROC Z 5.7 TPI auto take on a 5TH Gen V6. Both bone stock as they were from the factory...!!

And then I'd like to see the winner take on a Grand National...bone stock!!

carguyusa · 06-04-2012, 09:44 AM

Having owned an '86 and later an '87 GN back in the day a bone stock GN would destroy the IROC without breaking a sweat and probably take a LFX by about .1-.2 tenths (amazing how much technology has improved small displacement engines since then) assuming both drivers were up to snuff and also assuming the ambient temps were in the 60s-70s. A stock turbo Buick doesn't like HOT days. Now lightly modified it would be a massacre. 12's were as easy as a big K/N filter, test pipe, 93 octane chip, sticky track, and practice.

Stew · 06-04-2012, 10:40 AM

A 5.7 IROC CAN be quicker than expected. i have seen a 91 Z28 run 14.1 with just drag readials and and even a few mid/low 14s stock so from a stop anyways it could give a stock 5th gen V6 a run. GN would kill it.

GretchenGotGrowl · 06-04-2012, 10:58 AM

Good luck finding a stock GN willing to take it to the track, but if you do it would be the winner. The LFX should take an 87 IROC fairly easily.

ULTRAZLS1 · 06-04-2012, 01:48 PM

Speed density L98 from 1990 to 1992. 245 hp 345 tq. 3400 lbs. Mid to low 14's with good conditions etc. Drivers race with new v6 5th.

87 Mass air L99 iroc had about 20 less hp and were mid to high 14's. Edge to v6 5th.

GN was about high 13 stock. Edge to GN.

harrington81 · 06-04-2012, 04:58 PM

Just google the 0 to 60 times on each car not hard at all. That's all anyone cares about.

BlaqWhole · 06-05-2012, 04:27 AM

Quote:

Originally Posted by harrington81

Just google the 0 to 60 times on each car not hard at all. That's all anyone cares about.

I've had that website saved in my Google Chrome list for a while now. But seeing it on paper is nowhere near as fun as seeing it in person (or simply discussing it). I feel like every car has a personality. And while one car might lose to another on paper, a different car of the same make and model might do different...weird but it makes sense to me...

Ucantctchme · 06-07-2012, 06:29 PM

Quote:

Originally Posted by harrington81

Just google the 0 to 60 times on each car not hard at all. That's all anyone cares about.

0-60 means nothing to anyone whose car knowledge goes further than what's in the magazines.

bigd1276 · 06-07-2012, 07:13 PM

I don't know about what google says, but having owned an 89 IROC-Z with the 5.7 and a 2010 V-6, my money's on the IROC. That car "felt" a lot lighter and quicker. JMO.

Jonzmaro · 06-08-2012, 07:03 AM

I had an 87 IROC. 5 speed. Never did better than high 14's, low 15's. I would say 15.2 was my average.

Had a 93 LT1 Z/28. Ran consistent 14.1's.

I used to race a buddy who had a stock Grand National regularly. In my LT1, it was a drivers race.....I used to beat him most of the time. he ran consistent 14.2-14.4.

My LFX would crush my old IROC, lighter or not. This car pulls pretty hard once it gets it's steam up. The IROC used to fall on it's face in the upper rpm's. The fact that the LFX could hang with the LT1's of old, is quite a feat in my book. This is a great motor.

Stew · 06-11-2012, 11:27 AM

Quote:

Originally Posted by Jonzmaro

I had an 87 IROC. 5 speed. Never did better than high 14's, low 15's. I would say 15.2 was my average.

Had a 93 LT1 Z/28. Ran consistent 14.1's.

I used to race a buddy who had a stock Grand National regularly. In my LT1, it was a drivers race.....I used to beat him most of the time. he ran consistent 14.2-14.4.

My LFX would crush my old IROC, lighter or not. This car pulls pretty hard once it gets it's steam up. The IROC used to fall on it's face in the upper rpm's. The fact that the LFX could hang with the LT1's of old, is quite a feat in my book. This is a great motor.

If it was a 5 speed it was a 305, not a 350, makes a difference.....

BlaqWhole · 06-11-2012, 01:02 PM

Quote:

Originally Posted by Stew

If it was a 5 speed it was a 305, not a 350, makes a difference.....

True...I had an 87 350 TPI. I never got it to the track but it always felt like a mid to low 14 sec car.

grocerygetter · 06-15-2012, 01:35 PM

Gn hands down. None of those cars make the instant offline torque the gn will. It's called brake boosting. 14.5 psi max boost stock...and it will hold all of that on the foot brake if stock as well. That's a damn sledgehammer going off when it launches. You do one that way and get it to hook...it's hi twelves stock.

GaBoy25 · 06-15-2012, 01:44 PM

Quote:

Originally Posted by grocerygetter

Gn hands down. None of those cars make the instant offline torque the gn will. It's called brake boosting. 14.5 psi max boost stock...and it will hold all of that on the foot brake if stock as well. That's a damn sledgehammer going off when it launches. You do one that way and get it to hook...it's hi twelves stock.

Damn really?

ULTRAZLS1 · 06-15-2012, 07:04 PM

Quote:

Originally Posted by GaBoy25

Damn really?

No...it wouldnt run high 12s stock...not even with a tire. Has never happened and will never happen.

A high 13 is a respectable time for a stock GN. They trap around 100mph stock. I could see a mid 13 best case scenario.

Cars such as this can have their definition of stock blurred by the owner very easily. With a few slight mods and an increase in boost a GN could appear mostly stock and be very capable of solid 12's.

But totally stock 12's would NEVER happen. I dont think even with a tire it would be possible. Just not enough mph / hp in the car when stock.

_Nick_ · 06-15-2012, 07:16 PM

Quote:

Originally Posted by bigd1276

I don't know about what google says, but having owned an 89 IROC-Z with the 5.7 and a 2010 V-6, my money's on the IROC. That car "felt" a lot lighter and quicker. JMO.

It'a all that low end torque. My car even feels decently quick, up until it hits 4500RPM. Takes forever to get to 5k from there.

They're fun cars to cruise around in.

GaBoy25 · 06-15-2012, 07:34 PM

Quote:

Originally Posted by ULTRAZLS1

No...it wouldnt run high 12s stock...not even with a tire. Has never happened and will never happen.

A high 13 is a respectable time for a stock GN. They trap around 100mph stock. I could see a mid 13 best case scenario.

Cars such as this can have their definition of stock blurred by the owner very easily. With a few slight mods and an increase in boost a GN could appear mostly stock and be very capable of solid 12's.

But totally stock 12's would NEVER happen. I dont think even with a tire it would be possible. Just not enough mph / hp in the car when stock.

10-4 that had me

2012 IngotSilver 5.0 · 06-15-2012, 07:35 PM

Quote:

Originally Posted by ULTRAZLS1

No...it wouldnt run high 12s stock...not even with a tire. Has never happened and will never happen.

^Correct.

Supa Snake · 06-16-2012, 03:37 PM

my favourite is buick GN wish to buy one as soon as poss

MikeOD · 06-18-2012, 10:08 PM

Quote:

Originally Posted by Ucantctchme

0-60 means nothing to anyone whose car knowledge goes further than what's in the magazines.

I was going to say...I have absolutely NO idea what my car does 0-60 in...I just know it goes 12.1 @ 118 with a crappy 60' because I'm still trying to figure out how to launch it lol.

ChrisBlair · 06-24-2012, 01:50 PM

Did somebody say Buick?

The GN and GNX are very overlooked. Being a Buick guy back in the late '80s and '90s and being in the Buick Performance Group for years, it's hard to recall a stock IROC spanking a stock GN. I recall some teething issues with the TPI on the Chevy, although I'm sure that enthusiasts have resolved that by now

06-04-2012, 09:28 AM	#1
BlaqWhole Drives: 2010 Camaro 2SS/RS LS3 Join Date: May 2012 Location: NJ Posts: 638	87 IROC Z vs Grand National vs 5TH Gen V6... I'd like to see an IROC Z 5.7 TPI auto take on a 5TH Gen V6. Both bone stock as they were from the factory...!! And then I'd like to see the winner take on a Grand National...bone stock!! __________________ Nadia (2010 Camaro 2SS/RS LS3) - Vararam CAI - SLP Underdrive Pulley - V-Max TB and Power Wedge - OBX 1-7/8 LTs with HF Cats - OBX 3" Cat-Back - Custom Predator Tune!! Esmeralda (03 GT) - UDP, CAI, PP intake manifold/upper plenum/75mm TB, 4.10s, fully rebuilt/upgraded trans w/ Transpak, 2400 stall converter, full O/R exhaust, 04 Cobra tank/dual 255 LPH pumps, Sniper Tune!! Saving the world...1 hp at a time!!

06-04-2012, 10:58 AM	#4
GretchenGotGrowl Drives: 2012 LFX/2011 EcoBoost F-150 Join Date: Sep 2010 Location: Little Rock, AR Posts: 3,841 View My Garage	Good luck finding a stock GN willing to take it to the track, but if you do it would be the winner. The LFX should take an 87 IROC fairly easily. __________________ EFR Twin Turbo LFX-GPI Tune-ZL1 fuel pump-10:1 CR forged pistons-3.45 gear-Meth Injection-BMR Trailing Arms, Bushings & Sway Bars-Drag Radials-CircleD 4000 Stall-GPI Fuel Enrichment System 586 RWHP & 606 RWTQ @20 psi on 93 Octane (unlocked converter) 1/8 mile -- 7.158 @ 102.10 (20psi) Build Thread

06-04-2012, 01:48 PM	#5
ULTRAZLS1 Drives: Black 2010 1SS M6 Join Date: Nov 2009 Location: Jackson, Michigan Posts: 1,551	Speed density L98 from 1990 to 1992. 245 hp 345 tq. 3400 lbs. Mid to low 14's with good conditions etc. Drivers race with new v6 5th. 87 Mass air L99 iroc had about 20 less hp and were mid to high 14's. Edge to v6 5th. GN was about high 13 stock. Edge to GN. __________________ Performance Mods: PRC 250cc Aftermarket Casting Cylinder Heads, G6X3 Cam, Fast 102 Intake, Nick Williams 102 TB,Stainless Works 2" Long Tubes, Flowmaster AT Cat-Back, C.A.I. CAI/ADM Scoop, SLP UD Pulley, PFADT Springs/Sways/Rear Trailing Arms, Pedders Subframe Bushings, Energy Differential Mounts, Spohn Toe Links, BMR 2-Point STB, LSR Tunnel Brace, Hurst Short Throw, COR Velocity V3 Wheels, 305/35/20 Nitto NT555R's Finishline Performance Install and Dyno Tune-505 RWHP 464 RWTQ

06-07-2012, 07:13 PM	#9
bigd1276 2012 IBM 2SS/RS Drives: 2012 Imperial Blue 2SS/RS Join Date: Jan 2009 Location: Hanover, PA Posts: 1,394 View My Garage	I don't know about what google says, but having owned an 89 IROC-Z with the 5.7 and a 2010 V-6, my money's on the IROC. That car "felt" a lot lighter and quicker. JMO. __________________ ] http://www.camaro5.com/forums/showthread.php?t=30755 2010 IBM 2LT RS......Traded for..... 2012 IBM S22 RS

06-15-2012, 01:35 PM	#13
grocerygetter Drives: 2010 SS (2ss/rs, auto, SW/IOstripe) Join Date: Jan 2010 Location: 72034 Posts: 2,080 View My Garage	Gn hands down. None of those cars make the instant offline torque the gn will. It's called brake boosting. 14.5 psi max boost stock...and it will hold all of that on the foot brake if stock as well. That's a damn sledgehammer going off when it launches. You do one that way and get it to hook...it's hi twelves stock. __________________ -John S. 2010 Camaro 2ss/rs-a few cosmetic things, Pfadt stage 2 plus rear arm package, LG chassis brace, Vortech, ADM fpcm/ZL1 pump, Lingenfelter 3.70 gears, JBA catless, ProTorque 3200, 18" TSW N'rings for drag duty, 20" Forgestar F14s for street. Thanks to: Jannetty Racing, dv8motoring, Gwatney Chevrolet/GPI Jacksonville AR, TCAudio in Benton AR 2012 4Runner -daily driver

06-04-2012, 09:44 AM	#2
carguyusa Drives: '71 Buick GSX- '12 2LT/RS-Silverado Join Date: Apr 2011 Location: KY-USA Posts: 56	Having owned an '86 and later an '87 GN back in the day a bone stock GN would destroy the IROC without breaking a sweat and probably take a LFX by about .1-.2 tenths (amazing how much technology has improved small displacement engines since then) assuming both drivers were up to snuff and also assuming the ambient temps were in the 60s-70s. A stock turbo Buick doesn't like HOT days. Now lightly modified it would be a massacre. 12's were as easy as a big K/N filter, test pipe, 93 octane chip, sticky track, and practice.

06-04-2012, 10:40 AM	#3
Stew Drives: 92 Lumina/01 Dakota 4.7 HO swap Join Date: Jul 2009 Location: Eastern, Ky Posts: 3,211	A 5.7 IROC CAN be quicker than expected. i have seen a 91 Z28 run 14.1 with just drag readials and and even a few mid/low 14s stock so from a stop anyways it could give a stock 5th gen V6 a run. GN would kill it.

06-04-2012, 04:58 PM	#6
harrington81 Drives: 2010 camaro 2ss red jewel Join Date: Aug 2010 Location: comox,b.c Posts: 46	Just google the 0 to 60 times on each car not hard at all. That's all anyone cares about.

06-08-2012, 07:03 AM	#10
Jonzmaro Drives: 2012 IOM 1LT A6 Join Date: May 2012 Location: Potomac Falls VA Posts: 69	I had an 87 IROC. 5 speed. Never did better than high 14's, low 15's. I would say 15.2 was my average. Had a 93 LT1 Z/28. Ran consistent 14.1's. I used to race a buddy who had a stock Grand National regularly. In my LT1, it was a drivers race.....I used to beat him most of the time. he ran consistent 14.2-14.4. My LFX would crush my old IROC, lighter or not. This car pulls pretty hard once it gets it's steam up. The IROC used to fall on it's face in the upper rpm's. The fact that the LFX could hang with the LT1's of old, is quite a feat in my book. This is a great motor.

06-16-2012, 03:37 PM	#19
Supa Snake Drives: sierra dually 3500 Join Date: Jun 2011 Location: middle of nowhere Posts: 120 View My Garage	my favourite is buick GN wish to buy one as soon as poss __________________ power , style , pride old school MUSCLE CARS

06-24-2012, 01:50 PM	#21
ChrisBlair Buick 455 Fan Drives: 1970 Buick, 2012 1SS 6spd Join Date: Jun 2010 Location: Boston MA Posts: 1,343	Did somebody say Buick? The GN and GNX are very overlooked. Being a Buick guy back in the late '80s and '90s and being in the Buick Performance Group for years, it's hard to recall a stock IROC spanking a stock GN. I recall some teething issues with the TPI on the Chevy, although I'm sure that enthusiasts have resolved that by now __________________