I am looking to U/G to a '91 or '92 Z28. I don't want the 1LE because I want the T-tops. I am wondering if I would be better off going for a '90 Iroc-Z? Or do they have pretty well the same suspension and engine/Advantages? I prefer the '91-'92 Ground effects, over the 82-90, that's why I want the it. Also, does the spoiler come stock with the '91-'92 Z28's? I bought one for my RS, and if the Z comes with it, I'll just sell it with the RS.

Thanks for any input,
Jason

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'91 RS 305 5.0L V8
All stock for now...

 

25th Anniv all the way!!!

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1992 Camaro RS 3.1L
T5 Manual 5 speed
Open Air Intake
Z-28 Exhaust
8.5mm MSD Ignition wires

 

If your looking for a L98 than probably go with a z28 cause 90 5.7 ROCs are somewhat hard to find, (i went to east LA to get mine, But I'd do it again if I had to. I'm pretty sure all or atleast most 91-92 z's had the spoiler. I like the hood pieces better so i got them for mine and it looks hella tight.

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90 IROC 5.7l (L98)
ram air, K&N's, air foil,Flows

 

You're not going to find T-tops on the high performance cars. Only the low performance 305's. Unless you find one of the 100 or so 92 Formulas with L98's and t-tops. Yes all 91-92 Z28's have the spoiler. Good luck!

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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=-

 

Kevin, I suspect you are going to get a stoning from some of the 305 guys.

 

Umm..you don't want those junky 1LE's anyways! They are just rare and awesome and fast..you wouldn't want that..Give me the losers name that is selling a 1LE..I'll buy..I mean beat him up

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-Red '88 IROC 5 Speed 305 TPI w/3.08
-Dual Friction Centerforce Clutch
-Accel 300+ Racing Ignition
-Accel 300+ Pro Sleeve Plug Wires
-Accel U-Grove Plugs
-Flowmaster Force II 3 Chamber Cat Back Exhaust
-Hypertech Chip
-Hypertech Airfoil
-Removed, Then Re-installed (out of fear) MAF Screens
-Gutted Air Box
-Best E/T 14.90, 60 ft. 2.17, 1/8th mile 9.61(bald tires, Code's 34,36)
-Best MPH 92.7(bald tires)

 

What? Low performance 305's = the 205 HP version. High performance 305's = the 230 HP version. Sorry but its the truth.

 

I have t-tops

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90 IROC 5.7l (L98)
ram air, K&N's, air foil,Flows

LIKE A ROC

 

Ummm no. 305 with T5 = 230 HP 350 with 700R4 = 245 HP Woooooow! Big difference! I can make up the difference with a K&N and an air foil. LOL

 

youre forgetting about us tbi guys my 305 came with 170 wheel churning rice burning horsepower LOL. dont worry...you can keep your L98 cuz it wont wrinkle my brow once i got the 400

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Rick
90 Camaro RS 305 TBI
400 small block, Hooker 1 3/4 super comp long tubes, Random Tech Cat, Hooker aero chamber cat back on the way!!
TH700-R4 with Trans-Go shift kit
MacEwen Motorsports White Gauge Overlays
K&N Filter Charger (wooohooo)
GTS Headlight and Taillight covers
5% Limo Tint all around
Classic White Chevy Bowtie sticker on rear window

Man if my camaro were a rice-rocket all those mods would give me what...easily 50-60 hp!!!

 

170 HP!? Wow, with a couple of mods I could get my V6 up there!!!



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1992 Camaro RS 3.1L
T5 Manual 5 speed
Open Air Intake
Z-28 Exhaust
8.5mm MSD Ignition wires

 

Blade, you are right, there is only a 10 HP difference between a TPI305/5 speed and a L98 350. But isn't there a 40 ft/lb of torque difference between them?

The small HP difference is because the L98 is choked with the intake. The torque difference is an indication of the untapped power potential of the choked off L98.

 

Hardly low performance... once the bottlenecks like the 2" Y-pipe and small cat are replaced, it's as fast as the 230hp motor. It's the same damn motor. Choose your words better next time.

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91 Trans Am WS6
Bright White
5.0 TPI auto
Flowmaster 3" 2 chamber catback
Trans Go shiftkit
2000 stall converter

supposed 'peanut cammed' car (yeah, right)

Built on Wednesday

[This message has been edited by MrJ (edited November 09, 2000).]

 

Ok, so maybe its 87-90 350's can have t-tops, while the 91-92's are restricted. There's a weird car in every bunch that screws up the average.

What else do you want me to call the 305 engines then? The 90-92 305 stick cars can either be the 205 HP version or the 230 HP version. Should I call them the high performance and the not-so-high performance versions? Would that help your egos?

 

I don't know if even the 230hp engine should be termed 'high performance'... is 230hp and mid/high 14s really high performance? I don't think it is.

Regardless, my '91 Pontiac brochure lists one '5.0 TPI HO' motor as standard on the T/A and optional on the Formula. Not a '305 TPI LO' and a '305 TPI HO'

 

Two things; about the 245hp L98 and how a K&N and air foil will make the 230hp 305 up to 245hp. Yeah, you're right, but also take into consideration that if you had the L98 and put on a K&N and air foil you'll get more hp and still the 350 has more torque :-)
Now about the 170hp LO3 or as I like to call it the LO (low output) 305. Yeah it's a POS to most but when it comes to street reliability, these things are always near 200,000 miles before any engine rebuilds are needed (of course valve seats at around 140K). Another thing is the torque of a LO3 is 255 stock so don't think that a V6 with equal hp is going to be all that great. Yes the V6 is lighter but I don't think that'll help too much. I know you guys probably already knew that stuff. Sorry if I'm lecturing. By the way, my LO3 LO crapped out on me after I've been pushing on it for a year now. The thing is burning oil so I'm doing an engine swap this summer. For right now the car is in storage since I'm at school over 540 miles away :-)


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, Jon (91 RS too many mods to list)

 

I called it "LO" and "HO" because there is an obvious difference in the two 305 TPI engines. There has to be some way to distinguish them. The base engine for 91-92 Z28's and Trans Ams is the 205 HP 305 TPI engine. Ordering a 5-speed and a G92 performance package got you the dual cats and L98 cam, making the power 230 HP. I wasnt refering to "today's standards" when I called it high performance, I meant compared to the 205 HP version. Just like the L69 is called the "High Output" compared to the LG4. Geez, you guys are too hung up on names and technicalities.


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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=-