This one has me a little stupmed. Buddy of mine from my local third gen club has a 91 Z28 5 spd.

It has G92 and GU6. It doens't have the RPO for 245/50 (at least I don't think) tires but the door jamb says 235/55.

No wonder bar either or FE2. It has F41.

I always thought the 245/50 tires and a 5 spd got you the 230hp, dual cat engine.
(I find this funny, cause my 15" tire TBI IROC has the wonder-bar and FE2)

Maybe this is a 235/55 G92, dula cat F41 car.
Stange combo--didn't think it was possible.

Anyone have a car like this? Guess I have to check all the RPOs better and look for the dual cats--if they are still there.

 

I don't know, but you have a WonderBar and that car doesn't because only IROC-Zs got it. Some of the later Z28s got them just because they had some left over from the 90 half production year.

 

You are correct about the hp rating for your bud's Z28,if he has the rpo G92.As for the tires the 245/50s were optional on the 305 Z28s(w/rpoG92),I think.He would have rpoQLC( 245/50s )to have those tires stock.The rpoF41 was only used during 82-85 fbody years.



p.s.My Z has the wonderbar. :lala:

 

thanks for the info. I gotta contest that F41 was only 82-85. I saw his RPO's last night--he has F41. Then I pushed down on the front of his car--went down farther and easier then mine does (FE2) indicating his springs are not as stiff.

So, when you ordered a 350 TPI (91-92) did the 245/50 tires come standard?

 

thanks for the info. I gotta contest that F41 was only 82-85. I saw his RPO's last night--he has F41. Then I pushed down on the front of his car--went down farther and easier then mine does (FE2) indicating his springs are not as stiff.

So, when you ordered a 350 TPI (91-92) did the 245/50 tires come standard?

 

Hmm..I always heard that the F41 were for the early cars,'82-85,maybe you read it wrong(possibly seeing FE1-soft ride suspension),worn shocks or springs or he's got a console from an older car...and yes 245s were standard on 350 equipt Z28s.

 

Not so, F41 was the base suspension for every later V8 Camaro.

As far as standard/optional equipment, the best place to look is a ddealership brochure for the year you're researching.

 

Oh,ok.I just only heard that it was just during those years.I guess that The Camaro White Book was wrong then also.It doesn't list that code past '85.Thanks for the correction though,now I won't misinform anyone else.

 

In '91 and '92 wasn't F41 the upgraded (best) suspension that you could get with RS also seemed to trigger 16 in wheels and V8. whereas V8 RS cars without F41 got the 15 inch wheels and lesser suspension.
And F41 was the lesser of the 2 suspensions for Z28 with FE2 being best (excluding 1LE package of course).

 

i remember reading that camaros went to 235/55/16 in 91 too inprove traction

 

Yes, The Goodyear Eagle GA 235/55R16s came with the RS cars with F41, LO3, and 16 in Z28 rims.
They also came standard on Z28s unless they had L98 or a couple other stipulations then they had Goodyear Gatorbacks 245/50ZR16s.

Non-F41 RS cars got 215s RWL (I think) and 15 in rims.

 

ok, so what was the best suspension you could get in 91-92 , besides the 1LE?

 

I'll take a guess here......F41 was standard on the 5L Z28's and came with the 235/55 Tires. (245/50 orederd on these cars triggered FE2)

FE2 was standard on the 350 TPI cars, which also came standard with the 245/50 tires.

There is no 1LE suspension, technically speaking. 1LE is a package of stuff.
Think I am right here......maybe.

Opps--didn't read what you wrote---Bandit.

Well I guess it's gotta be a single cat 205hp 305--we got the F41 w/235/55 tires.

I thought it's just really od he has 3.42's and G92 (combined with the previois mentioned stuff)

 

thanks. So what's the difference between F41 and FE2?

 

530lbs front springs on FE2 and Bilstien struts/shocks, larger anti-roll bars and probably bushings.

(I think F41 has 300 lbs something fornt springs---most days I'd rather have those than FE2--pretty hard...good for cornering bad on rough roads)

 

[QUOTE][i]Originally posted by 871LEIroc [/i
(I find this funny, cause my 15" tire TBI IROC has the wonder-bar and FE2)
what ???? ????

 

[QUOTE]Originally posted by mypurple92rs

Quote:

[i]Originally posted by 871LEIroc [/i
(I find this funny, cause my 15" tire TBI IROC has the wonder-bar and FE2)
what ???? ????

Odd but true I am pretty sure all IROCs had FE2.
That'd be a difference between the 91-92 and 85-90 IROCs.

 

Ok, just for fun ..
what would the rpo be on a car that was an RS and didn't have F41 (base V6 car or LO3 with 15X7s) ?

 

didn't all V8 RS have F41? Wasn't really much of a performance suspension....

So a V6 car....hmm...harder to find that rpo since it wasn't an option--my Red book and white book don't have it...best go ask the V6 board.

 

No, I don't think the V8 RS cars that came with 15X7 inch wheels had F41 Suspensions. I think F41 triggered the 16 inch wheels or vice versa.

 

not that but your iroc has 15" tire and TBI???

 

Yeap. There were some IROCS that had that package.

 

never herd of that before allways thought came with carb or TPI.learn somthing new everyday

 

never fails me to hear that people do not know this--TBI 15" IROCs--they are very rare--more so then the 350 TPI (which isn't rare at all) unfortunatley TBI is not desireable.

The standard motor from 85-87 was the LG4--then 88-89 was the L03. So mine isn' the slowest IROC Chevy finaly wised up for 90-92 with 305 TPI power standard.

Chevy really gave IROCs a bad rep in putting such a low powered engine in their flagship Camaro. Some punk kid smokes me--and thinks he can beat IROCs! Everyone and their dog assumes it's a 350 and has *****.

But Chevy wasn't alone in this stupidity game--they built TBI Trans Ams too.

 

Yeah, that's why most people think the Mustangs can beat all third gen Camaros and Firebirds - because the majority of them on the street are the 305 cars and the slower ones at that. Plus the magazines rarely tested 350 cars.

 

I hope your not talking about an 87 IROC here! There were no 87 IROCs with the 15" rim from the factory. The 15" rim became available in 1988.

 

Generally when someone says an IROC, they aren't referring to the 1987 specific model year. They are referring to IROCs in general. I dunno about you, but when someone says "I got an IROC," or "look at that IROC," 1987 doesn't exactly pop into my head. I just think, "cool, I like IROCs" Could be 85 to 90, but 87 doesnt really jump out at me. When I said "some IROCS" that is what i meant. Some IROCS did come with that package, but thank you for letting me know it wasn't available in 87. I didn't know that. I appreciate it.

 

The reason I specified 87 is because 871leiroc stated that his car has 15" rims. You concurred when others questioned it and said it was possible. I was merely stating that it is not a stock item on 871leiroc's car because they weren't available in 87. I should have been clearer on my reply.

 

ah...I see the mix up, you assume from a false presumption.

I currently have an 88 IROC--the TBI/FE2/15"/wonderbar car.

I used to have an 87 IROC that was a Players Challenge car.
And although there were zero 1LE's made in 87---I made that my username. If the car had been an 88-89 then it would've been 1LE.

Kinda like you see some guys with IROC-SS usernames oir things of that nature.

 

I just "assumed" that you added all the 1LE goodies to your 87. A friend of mine has a 69 IROC. His 69 Camaro has the interior and drivetrain of an IROC so he is referred to on boards as 69irocss. Can you see where I was coming from with my statement?

 

Good thread and timely! I'm going tomorrow to look at a Black 1991 Z28 305 TPI 5 spd for sale.

Is there a way to tell other than RPO codes if the Z is 205 HP or 230 HP?

If I recall correctly, rear gears are either 3.08 or 3.42, is this right?

Does the 305 have the same ECM as the 350?

I think the car is over priced guy is asking $6500 but will negotiate. Here are the details:

1. New GM 305 crate engine w/ 8,000 miles (50,000 mile warranty, he says transferrable?)
2. Paint job 4 years ago
3. Hard top
4. New brakes all the way around 4 months ago
5. 500 miles on new Z-rated tires
6. New battery, water pump, starter, hoses
7. K&N air filter
8. CD player w/ aftermarket speakers
9. Underdrive pulleys
10. New clutch and transmission gone through
11. Flowmaster exhaust

Any input or what I should offer the guy if exterior and interior are in good shape, etc would be greatly appreciated!!

Matt

 

yes--it'll be 3.42 or 3.08s. Look for dual cats = 230hp rating

 

What he said and look for rpoG92(sticker in center console compartment)would be the easiest to know it's the 23ohp version and also the gears should be 3.42 . Good luck!

 

Thanks for the input guys! The car was everything the seller said it was. He is supposed to bring all receipts for work done (including crate engine ordered from Scoggin-Dickey) today.

I have one more question. I called two Chevrolet dealers here in Louisville and said I needed to replace my engine in a 1991 Z28 305 TPI 5 speed. The parts guy said the only 305 GM crate engine available anymore is the LO3. The LB9 is no longer available.
Does anyone know if this is true?

Thanks

 

Turned out to be the LO3 engine. Oh well, keep looking!

 

What had the L03? The Z? he put in a L03 in the Z?

 

A another buyer saving himself disappointment later by doing a little reseach and not beliving the seller story 100 %. Good luck.

 

91ZMan,
Yep, the seller put an LO3 in a '91 Black Z. He order the engine from Scoggin-Dickey in August 2002. He wanted a GM Crate engine. Supposedly, a 50,000 mile warranty that is transferrable.

From what I understand after calling/talking to three local Chevrolet dealers, thats the only GM crate 305 available now - the LO3.
You can not order an LB9 anymore. Not sure about
other locales.

Having said this, it was still a nice car! Just about everything on the car was replaced with new parts. Engine, trans rebuild (5 sp), paint, brakes, tires, radiator, water pump, starter, battery, hoses, etc. Even a nice sound system with amp and subs.

 

He could have put a 350 in it.Maybe he didn't know how,couldn't afford to,wanted it somewhat original or whatever but he could/should have put a 350 in it then.Oh well,good luck with your search.

 

Thanks for the reply 91zman. Yep, I agree would have been a good time to drop in a 350 since he did all the other work to it too. Nice car regardless.

He said he wanted to keep it original. Oh well, different strokes for different folks.

Had it been a 350 (250 horses or more GM crate engine) I probably would have offered $5800 or so since the car had so much done to it.
Later