Jim85IROC

iTrader: (2)

I'm just trying to verify this, but NO v8 thirdgen camaro ever came with a 6,000 redline tach, correct? Also, all V8 tachs had the 60psi oil pressure gauge, not the 80, right? AFAIK, the V6 cars were the only ones to get the 6,000rpm 80psi tach, and those will not display an accurate rpm in a V8 car. Right?

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The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah

Willie

iTrader: (1)

Right and right!! But that doesn't mean you can't "modify" a tach. Check out the link in my sig and click on "In the Driver's Seat". Notice my tach?

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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
12.57 @ 111 mph.
12.04 @ 114 mph (50-hp nitrous).
http://www.ozemail.com/au/jca69/mods/williesz/willie.html

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

MikeDwhoROCZImports

iTrader: (1)

Willie I just took a look at your sight and almost crapped myself. Your car is simply amazing. First of all, a 305 that runs 12's??? That's the exact route I've been thinking of running, but then changed my mind because I thought it would be almost impossible to keep the car streetable and that it would cost OBSCENE amounts of money.
And all of those custom interior controls...you've given me too much to think about.

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"Doin 120 Mowin' over mail boxes, radar detector, to show me where the cops is."

"Ain't no such thing as a front wheel drive sports car...I can smoke the tires in my 1985 Accord with 87hp (factory rated)."

1987 IROC-Z28 Camaro
-ADS Super Chip-Replaced all fluids with Red Line Racing Synthetic fluids-Griffen "Nascar" Aluminum Racing Radiator-Good Year Super Hi-Miler Cooling Hoses-160 Degree Thermostat-Jet Fan Switch- Center Force Dual Friction Clutch-Hays Flywheel-New Alternator-Polyurethane transmission mount-Doors sound insulated with Dynomat Super-Replaced Ratted Hoodliner with new one from GM-Accel 300+ Spark Plug Race Wire with Pro-Sleeve -Bosc Platinum +4 Spark Plugs-305 H.O. Dual snorkel intake-Four Dunlop SP Sport 9000 tires (245/50ZR16)-New 3.70 gears in a Posi Rear End off 89' Trans-Am (Sandblasted and Painted Black with Yellow rear end cover)-Rear Disc Brakes (11.65 inch rotors with PBR Aluminum Calipers off 89' Trans Am)-Polyurethane bushings on rear sway bar-Catco free flowing high performance catalytic converter-Hooker Super Competition 3" Mandrel Bent Cat back exhaust-Replaced cardboard headliner with a waterproofed fiber glass headliner....much more comin' soon. =)

Tonyrodz

Pretty sure my 86 T/A w/305 tpi has the 6000 tach in it.

Chris Luongo

Hmmm...maybe Camaros are different. My '92 Formula has a 6000rpm tach, 5000 redline, 4500 "yellowline." And I only have TBI and 120mph speedometer.

MRZ28HO

No, you guys are not reading what he is asking. He is asking about the REDLINE not the last rpm visible. All the 3rd gen camaros (carb'ed V8s at least) that I have seen have a 7000rpm tach with a 5500rpm redline (based on engine) and 5000rpm yellow, and 60 PSI max pressure.

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George P. Lara
1994 Z28 LT1 T56
1984 Z28 High Output
Member: SCCA, SCFB, SC3GFB

Jason E

Jim had it right the 1st time around Here's a breakdown:

All 3rd Gen V6s: 5,500 yellow, 6,000 red
305 TBI and 4bbl: 4,500 yellow, 5,000 red
All TPI engines: 5,000 yellow, 5,500 red

And yes, 60PSI = V8, 80PSI = V6

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Jason E
'89 Camaro RS 2.8
Hypertech chip/K&N filters/Accel 8.8 wires/RapidFires
Eclipse CD and 100x4 amp/Boston plates and 6x9s
Alpine Alarm w/ Keyless entry
IROC tailights/tinted windows

MrJ

Actually that's not quite true. I have a 305 TPI with the 4500/5000 tach. From 90-92 at least, the 140 speedometer and the 5000/5500 tach were only available together - and to get them you had to specify G92 on 305 TPI 5 speeds, or get a 350 TPI.

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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

Willie

iTrader: (1)

Jason has it all right...except one is partially right. All TPI engines did not get a 5,500 rpm redline tach. All 305 TPI's with the peanut cam received a 5,000 rpm redline tach. That would include all 1986 305 TPI's and succeeding years with a 305 TPI/automatic combo.



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Willie

Supercharged 1987 305 IROC-Z, Daily-Driver, Emissions-Legal.
12.57 @ 111 mph.
12.04 @ 114 mph (50-hp nitrous).
http://www.ozemail.com/au/jca69/mods/williesz/willie.html

1987 "20th Anniversary Commemorative Edition" Z28 Convertible -- Super Chevy Show Class Winner, 1998.

Grim Reaper

Unfortunately, mine's all in metric.

Jason E

Really??? Hmph. Learn something new every day!! It never occurred to me the "peanut" cammed TPIs had any different redline. Was there ever a reason that was given for this?

MrJ

Actually, it's more likely that the G92 tach and speedometer were just that - the G92 tach and speedometer. It can't be argued that the reason why the G92 305 TPI 5 speeds and 350 TPIs have the 5000/5500 tach is due to more high RPM power; the TPI system is the limiting factory and it kills power in ALL stock TPI motors over 5 grand. If 90-92 305 TPI autos have the small cam, then 85s must have it too, since they run nearly identical 1/4 mile ETs and trap speeds.

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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

Jim85IROC

iTrader: (2)

The 85 TPI cars don't have the peanut cam. They have the 202/206 cam. The 85 had the highest horsepower of any TPI 305 mated to an automatic transmission. The 85 also had the 5500 redline tach regardless of the rear end. My car is an open legger ( ) and had the 5500 redline. As Willie said, the tach is based on the engine, not the rear end.

BTW Mr J, the blue car is still running! The passenger door skin is about to fall off and the hole in the rear quarter is big enough for a spare tire to fit through, but she still runs!

------------------
The IROC Homepage
<A HREF="http://www.rit.edu/~jli4307/camaro" TARGET=_blank>
View the restoration of an 85 IROC</A>
"I didn't know a bored out Ford could go so slow" -Shenandoah

MRZ28HO

Uhmm, LG4s had that configuration, but L69s had (I have two of them) 5,000 rpm yellow line and 5,500 rpm redline.

It's amazing how some TPI gurus claim to be "Thirdgen experts" and they don't know too much about the carb'ed thirdgens. To me, that's not a thirdgen expert. Of course, I am not a self-proclaimed "thirdgen expert" either.

Jason E

Uh, I don't claim to be a "TPI guru" or a "3rd Gen expert"...I know my stuff but I do not pretend to be more knowledgable than anyone else on this board. I'm not. This board has added a lot to my 3rd gen knowledge in the past months. But I think for a 20 year old who owns a 6 banger, I can hold my own on most conversations

I indeed completely admit to forgetting the L69, which I do remember had a 5500RPM redline. I apologize if I confused anyone...when I think 4bbl, I think LG4, not necessarily L69 as well (even though it is a great engine!!)

[This message has been edited by Jason E (edited November 02, 2000).]

MRZ28HO

My comment wasn't aimed at you Jason E. and I can see why you responded, sorry. I just used you to clarify the tach issue.

Jason E

No problem, I see what you meant now I just saw my quote there and all....

But I do appreciate you catching my error. I wouldn't want to give out incorrect info and not have someone catch it!!

Tigger84TA89BIRD

I know this is an old subject, but what about firebirds? My 1984 Trans Am has the stock 305(carb'd) and the 6k REDLINE and an 80PSI oil pressure sensor. does this throw a wrench in those figures or does pontiac have a better sense of what the cars will do?

Grim Reaper

Or maybe your car was originally a V6 and someone made a counterfeit Trans Am.

Tigger84TA89BIRD

I checked the VIN code and it comes up as an
L69 305 V8 in the Trans Am series. maybe somewhere in the RPO #'s will be the answer???

84taL69

I have a 1984 Trans Am with the L69. My tach redlines at 6000 rpm and goes yellow at 5500.

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1/4 mile: 14.42 @ 92.7
edelbrock headers and y pipe, dynomax cvx