For my other car I got a 90 Lumina with the 3.1 MPFI whats the yellow and redline on these engines? Thanks

------------------
89 FORMULA 350 Edelbrock Cat-Back March Pulleys
Accel Cap ,Super Coil SLP Airfoil K&N Filter 180 stat , Fan Switch
Taylor 8mm Spiral Pro,TB Bypass ,Energy Sus bushings ,Hotchkis STB ,MSD 6AL ,Edelbrock TES's ,Hi Flo Cat ,Crane AFPR ,1/4 time 14.4@98

 

i believe redline is 5500?

------------------
89 RS
305 TPI...

Previous:
2.8 s/c'd firebird

 

Yellow line is 5000

 

Yellow-line and redline are universal on all 2.8's and 3.1's installed in GM FWD and RWD cars....

5,500 RPM yellow, 6,000 RPM red. This goes for my Camaro, my dad's Grand Prix (same engine as Lumina), and every other 60 degree GM V6 I have been in. And thats a lot of them...



------------------
Jason E
'89 Camaro RS 2.8
Medium Grey Metallic/700R4, T-tops
Hypertech chip, 2 K&N filters/Modded air box
Eclipse CD, Eclipse 100x4 amp, Polk 4x6 fronts, Boston RX 6x9 rears
Alpine Alarm w/ Keyless entry
IROC tailights

 

For obvious reasons, GM placed these 'limits' conservatively to keep the driver from getting near the true red zone which is more like 7000rpm. As stated in Chevy's "Power" books, all production V6/60 degree engines with cast-nodular cranks and forged rods can reach engine speeds of up to 7000rpm. The v6/60 is a short stroked motor that is able to take high revs (3.31-inch)

 

I really dont understand this redline thing, are our cars supposed to get up that high. When I slam my car I car hit about 7500 rpm in about 3 seconds, if that. Is that good??

------------------
91 RS Camaro
3.1L
Cat Back System, K&N filter, Fastchip Stage 2, 160 thermo, Rapidfires and Bosch Wires, soon to come: Homemade Ram Air, and maybe headers and power pulleys

 

you got 7.42 gears or something? If you're winding that thing up to 7500 you must be able to time your 0-60 with a calendar.

------------------
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

 

Oh sorry I meant 6500!!! Is that too much??

------------------
91 RS Camaro
3.1L
Cat Back System, K&N filter, Fastchip Stage 2, 160 thermo, Rapidfires and Bosch Wires, soon to come: Homemade Ram Air, and maybe headers and power pulleys

 

I drive my 2.8L pretty hard, and usually shift around 6000rpms when I'm out on the town crusing with friends.

In the rain I lost traction one time, and bounced my tach off of 7000rpms accelerating in traffic. I thought for sure I had messed up my engine, but it runs just fine.

 

I have an article on an '83 Firebird S/E that had the special, Firebird-only 135hp 2.8 H.O. 2bbl V6, developed originally for the Citation X11s. It states in the article that with the proper valve spring, a 2.8 can spin to 7000 RPM with no problem to the bottom end...I would assume then that if someone put better valve springs in a 2.8, they could spin it safely to 7 grand, or even higher...

------------------
Jason E
'89 Camaro RS 2.8
Medium Grey Metallic/700R4, T-tops
Hypertech chip, 2 K&N filters/Modded air box
Eclipse CD, Eclipse 100x4 amp, Polk 4x6 fronts, Boston RX 6x9 rears
Alpine Alarm w/ Keyless entry
IROC tailights

 

No, to go beyond 7000rpms reliably/safely, you'd need to change at least the pushrods, and maybe even the connecting rods.

 

I'm just relaying to you guys what the GM engineer in the article was quoted as saying.

If anyone is interested in this article, I'd be happy to post anything from it. It was for the '83 Firebird S/E.

 

I don't know what I'm missing here, but when I'm driving "aggressively," I usually don't go above 4K RPM. It's not because I think I'll damage the engine, but after 4K, I usually don't ever feel any great power coming from the car. My power band seems to be from 2.5 to 4K, then it drops off. Is there something I'm missing by not hitting 6K RPM?

------------------

ICQ #: 77308896
AIM: Ezekiel2sc
2.8L MPFI w/ K&N filters & homemade ram air
5 speed manual
3.42 rear axle
180W Clarion CD Deck
Pioneer 4*6 in front
Polk 3 way 6*9 in back

 

SW, how's your timing? My powerband seems to be from 3,000 to 5,000 RPM's... granted you're only losing 500 RPM, but that might help out.

My tach has never run past 5800.. usually it goes to 5500 before it shifts.

Spinning the snot out of a motor usually makes more HP, since HP is a function of RPM's. However, your intake and exhaust need to be able to flow enough to handle the extra spins, and the internals better be damn strong too!

-Tom P (Hot rodded 1986 Firebird 2.8l) from http://www.f-body.net/mailbag/3rd/3rd_mailbag.html message boards

 

I'm not too sure about the timing. I thought I checked it and it was 12 DegATDC, but I later found out that I was hooked to the #2 spark plug. DUH. I tested it last night, and if I shift in 2nd gear at 4000 RPM, I'm at 40 MPH. If I shift at 5000RPM, I'm at 45. So how does that seem.

------------------

ICQ #: 77308896
AIM: Ezekiel2sc
2.8L MPFI w/ K&N filters & homemade ram air
5 speed manual
3.42 rear axle
180W Clarion CD Deck
Pioneer 4*6 in front
Polk 3 way 6*9 in back

 

ive had my car past 6k before its fun havin no govener hehehe i am gonna push for 7 jsut so i can wacth my engne blow up so i have an excuse to buy a new one

 

good idea FAST RS....i considered that too, but instead i'm just gonna let it blow up naturally. WHEN???? who knows.

------------------
Dan
100% stock 1990 RS 3.1L
and VERY slow