where can i find some actual stats on IROC's when they were used in IROC? iroc.com doesnt have anything.. heck trying to find soemthing from 4 years ago is hard enough. anyone know of some old magizines that would have some???

 

Just ask what u want to know and we'll tell u.

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89 RS

STILL Looking For:
An 87 IROC-Z28 350 TPI

Yeah I have an RS, but I want an IROC-Z!!

 

what size tires, what was the body made out of, dimensions, at what angle is the wing/spoiler, what was the weight distribution % *ie 49/51, HP/tq, how much was the car dropped/how far off the ground is it.

 

my answer is yes to all

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90 RS 305 tbi, 4 3/4" cowl Hood, Edelbrock TES headers, Flowmaster exhaust, Crane roller cam, comp roller rockers, vortec heads/intake, ported tbi, w/new injectors, 1 inch tbi spacer, air foil, 14x4 k&n flat base air cleaner, Rebuilt 700r4 w/ B&M shift kit, B&M Megashifter, 3.23 posi, 2 12 RF's with mtx amp, top of line alpine cd player, soon to have 90-91 gfx, z-28 wing, new paintjob, rims, and all new lowered suspension. MSD probillet distributer, and coil in the mail

 

usually 16"

metal

Same as any other f-body

Same as any other f-body

Same as any other f-body

a little more depending if it was a 305 or 350

stiffer springs but not dropped.

I think you're expecting an IROC to be something special. It's a fancy name that was used for a few years replacing the Z28. Although cosmetically there were some differences between models, mechanically they were the same. IROC's came with a few more performance options that typical cars like RS , LT etc didn't have.

I think the answers you want can only be answered by GM and I doubt you'd get any better results from them. They won't even tell you why they change a simple fitting to another simple fitting.

Read through the f-body FAQ. If it's not in there then you'll have to contact GM.

 

I think he's talking about the race cars.

[This message has been edited by Apeiron (edited October 21, 2001).]

 

yeah, he is talking about the actual race cars - I am kind of curious what/how they were running also ??

 

yes.. i am talking about the actual race car.. not the GM produation car.

 

Not sure how much searching you've done then.

Start with this.

http://www.irocracing.com/current_season/garage.html

 

I was curious as to what the late 80's IROCS were running - not the 4th gens. Out of further curiosity, they list the carb as 390 cfm 4 barrel - kind of small ?????

 

aww!!! i know they have stats on the new iroc firebirds... ok lets reword the question.

does anyone know where i can find some actual stats on IROC's *race cars* that were used from 85-90? geesh

 

what size tires: 27/11/15

what was the body made out of: fully adjustable tubular frame

dimensions:??

at what angle is the wing/spoiler:??

what was the weight distribution % *ie 49/51:??

HP/tq: 450HP@6,500RPM and 405TQ@4,800RPM

how much was the car dropped/how far off the ground is it:??

These cars had 750CFM Holleys, not 390.

 

The specs I know of for the 1984 IROC series race cars that GM modeled the appearance of the poduction 85 IROC-Zs from are as follows:

Body All fiberglass manufactured by Diversified Glass Products.

Chassis Banjo Mathews Grand National tube chassis, fully adjustable for ride height and weight distribution.

Front Suspension Banjo Mathews designed unequal length control arms. Monroe hydraulic shocks

Rear Suspension Banjo Mathews coil spring, solid axle, hydraulic panhard rod.

Brakes Hurst/Airheart 4 wheel vented discs, 12.2" X 1.4".

Rear Axle Winters or Stock Car Products quick change, 3.90:1 for road courses, 3.50:1 for oval courses.

Wheels & Tires 15" X 9.5" Weld Wheels. Goodyear Eagle Grand National tires, 27" X 11".

Fuel Cell 33 gallons.

Transmission & Clutch Tilton Engineering triple disc clutch. Borg Warner Super T-10 four speed trannie.

Engine Small block Chevy prepaired by Katech Inc.

Displacement 355 CI

Bore X Stroke 4.00" X 3.50"

Compression Ratio 9.5:1

Heads Bowtie Aluminum.

Camshaft Crane roller, TR260/4167-2-6

IntakeHolley 390 CFM double pumper four barrel, Edelbrock Bowtie Victor Jr.

Exhaust Hedman 1 3/4" headers Side exit pipes, no mufflers.

Ignition MSD T6.

Weight 3350 Lbs.

Wheelbase 108".

Horsepower Tuned to 420 HP ±5 HP @7000 RPM.

Torque400 lbs/ft @4800 RPM

Top Speed 158 at Michigan, 179 at Talladega

Acceleration 0-60, 4.9 seconds.
¼ mile, 12.4 - 13.4 depending on gearing.


I'm not sure about the actual angle & size of the rear spoiler, but it was at aproximately the same angle and shape as the production spoiler but was about 4"-5" high, and had an adjustable height extension on the back to increase total height to around 6"-7".
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Tracy /AKA IROCKZ4me
'86 IROC-Z Camaro
"Cogito ergo zoom"

• 355 cid
• AFR heads
• Arizona Speed & Marine hydraulic roller cam w/ AFR hydra-rev kit
• modified SLP runners
• TRW forged pistons/ceramic coated
• fully balanced
• Edelbrock headers/ceramic coated
• SLP cat-back
• Paxton supercharger
• Nitrous Express nitrous oxide

EFI Performance Club on Yahoo

[This message has been edited by IROCKZ4me (edited November 03, 2001).]