I ran my car on the Dyno on Sat and I believe I got some good results. What do you guys think? I will scan it and post it if I have time tonight. Remember it’s a 1987 2.8L Automatic w/o a smog pump.

Factory specs for a 1987 2.8L from a Pontiac Brochure: 135hp and 160lbs-ft.

What mods I have done:
Ported Plenum & Runners
Ported & ceramic coated the Exhaust Manifolds
Holley ADJ fuel pressure regulator
EGR Block off
RAM Air induction
Throttle Body Bypass
Flowmaster Exhaust
2.5 in Cat
MSD Blaster Coil
Taylor 8mm Wires

Hindrances:
17in steel rims
Suspect injectors (oil smells of gas and pressure leaks down overnight)
140,000 miles on the engine

It was about 90 degrees, with typical GA summer humidity.

Dyno: 7-27-02 @ 2:08:42

Max Power = 107.8 (+20% for fly wheel rating) : 129.36hp
Max Torque = 136.6 (+20% for fly wheel rating) : 163.92ft-lbs

Max speed was 115 MPH

So how did RAIF do?

Has anyone dynoed a true “stock” 2.8L? What did it do? I wanted a baseline to compare to.

 

I'm thinking that not very good with True ram air, But I dont know.

I want to dyno my car one day to see what it's at. (all stock except CAI). I have 140K miles and I can lay rubber in a auto... 215 tires.

But I'm thinking thats low with the mods you have and stuff.

But i'm only 15 so what do i know?

 

Reading your post again, you are close to what you are supostu be at stock. And the mods you have done shouldnt add too much extra power. And considering the miles you have on the car, I think that seems about right?

 

wow thats good numbers, so i guess you fixed the bad running problems?

you have a sweet lookin car, keep up the good work.

BTW did you get your car weighed? how much? cust curious.

 

Not too bad. I was guessing that a stock 2.8 after a rebuild would run 105-108hp, but with 140000 on the engine the car seems to be average.

I sort of expected closer to the 115-120 range hp, but the torque seems to be fine.

This is just my guess. I remember there was a site on here before that if you knew your 1/4 mile time and the weight of your vehicle you could get an estimate. I remember my car's estimate was 100 hp even 155,000 miles on it. So raif as you call it did good.

 

They torque is higher than the stock #s, but the HP is down a bit. I think I have solved 95% of the car's drivability issues. Once I get the injectors swaped out, I should be good to go. I just need to get it to the track and see what it will pull in the 1/4 now that its right. I know I have the weight listed somewhere. I will look it up tonight hopefully. Doing some work on the car tonight, so if it runs late. You know.

 

Yeah , But the torque is what matters !!! That's a nice little torquey ride you got ...For that engine and the miles on it ....Goodjob !!!

 

Was that the HP at the axles or at the flywheel.
Hp at the axles is always going to be considerably lower.
How many RPMs was the HP rated at.

 

You beat me to it , I was just about to post that same question .

 

Well if its like a standstill dyno, the RAM AIR shouldn't work that well, because no air is bein <i>RAMMED</i> into the intake. If she had some sorta fan or something that pushed air over the car....

On another note, isn't it freaky how your car looks while its goin fast, yet standing right in front of you?

 

V6bird , whats that hanging on your exhaust tip ?

 

Thats a good run, it will be down some from the lack of fresh cold air from the ram air. You are doing good.

 

Most people do not go through the trouble of removing their engine for flywheel ratings....so because of that and the fact that flywheel ratings are useless rarely do you see them. If you notice, she added 20% for drivetrain loss, you should be able to determine she's talking about RWHP.

 

not bad, amazine how time and miles can affect an engine. Two questions for ya
1. What kinda strut tower brace do you have, isnt that one for a v8??
2. You have suspect injectors, what differences did you get, how much, and where from if you recommend them?

 

Those numbers arent half bad for the mileage... i bet with some fuel mods your numbers can be bumped up a bit.

 

Dale, I think she means she 'suspects' the injectors of being a hindrance. Hehe, thinking of a new brand?

 

How much did that dyno test cost you?

 

what were the rpm's for the peak hp & tq?
also, what was the average (usable) hp & tq ratings?

 

I wish KED85 would dyno his 3.4L and see how his mods work out and see what a 3.4L does for RWHP.

 

I didn't get the car dynoed, it was for a smog check. Here in the city of Los Angeles, your car has to pass a dyno and a sniffer, and a visual inspection! Well it wasn't that hard, and I was under the average for pollutants (don't know the exact #'s, I'll pull them if you want me to)

 

Did they tell you what you got on the dyno?

 

Damnit, I wanted some new injectors. I was thinking about pluging some fote-d5a's in their, but affraid they will stick in the air passage way to much.

 

$50.00 for 3 pulls. Our club went as a group, so they gave us a discount.

 

You know sadly it was my first time there and I was not sure what was important to get. There is nothing on teh dyno sheet saying anyhting about the RPM's. He had me manually shift it even though it was an automatic. So it was 1/4 in first till 20mph then 1/2 throttle in 2nd till 50, then D and floor it. I was looking at my spped teh whole time and never looked at RPMs.

As far as HP and TQ. You know I just noticed their chart starts at 60 mph and goes to 115mph. So and average is hard to tell. I need to scan this thing so you guys can help me determine the important parts.

OK at 65mph the car looked to be at 80hp and slowly climbed to 107.8hp to 90mph then leveled off. TQ: at 65mph it was at 136.6 and leveled till 80mph and then slowly dropped to 100 at 110mph.

Does that help??? Sorry still new at this. Do you think they have the RPM info stored in their computer and I could call and ask? I assumed it would all be on the chart.

 

Strut tower brace is Edelbrock, the stupid piece of crap. Sorry we just cant get the thing to fit w/o hitting the hood. It dented my factory hood. We even modded the brackets to lower the brace further then the instructions said to. We are going to make our own next time.

The injectors are not functioning right and I suspect they might have hindered the cars performance. Sorry for the confusion.

 

Ovrclck 350 is right:

Ok the numbers in bold are what the dyno said for RWHP.
The italics are what the numbers are at the flywheel if you calculate a 20% drive train loss.

Max Power = 107.8 (+20% for fly wheel rating) : 129.36hp
Max Torque = 136.6 (+20% for fly wheel rating) : 163.92ft-lbs

The factory specs I got were a flywheel rating, so I had to do the conversion to see if I was anywhere close to where I should be.

 

I got done so late I forgot to look up the weight, but I posted it once here before...Oh, here we go:
Frt. aprox.: 1820
Rear aprox.: 1545

Total: 3395 with me in it.

 

I thought there was a way to measure hp at the flywheel without removing the engine . But it really doesnt matter anyway

 

Congrats on the run! Seems like the 2.8 is still going strong! (I'd hate to put mine on a dyno, haha)

 

Why do they do that??? Even when on tv you sen them dyno like that; going real slow and not really going that fast.

I guess maybe you can get better numbers like that???

is that the reason???


I would rather have gear slaming, tire smoking numbers. and also get a good top speed test.

stick it to the floor and start jaming gears, full rpms in each gear; then hold it to the floor till you speed tops out.

 

If your looking for injectors go to ebay and get some Z28/Iroc injectors. You can typically get them for 50-70 bucks then send 6 to www.cruzinperfromance.com with another 60 and let them clean/blueprint them for ya. I have 19 lb'ers in my car and it helped.

 

Dynos only measure output in your 1:1 gear...which is 3rd for auto's and 4th for standards (IIRC). Going all out wouldn't do you much good. It just measures whatever you're putting to the ground. It IS odd that it doesn't show your RPM's on her graph. I've never heard of one without it because HP is a value that's based off of engine RPM. Without RPM, there is no HP value. Also, remember that a top speed run on a dyno is useless too....wind resistance is the key factor in determining a car's top speed....without wind resistance, your car will reach it's top end when you run out of gear as long as you have enough HP to get it there, and even though our cars aren't huge HP monsters, they should have enough to gear out withow any wind resistance.

 

I got them from Pull A Part this weekend with a good dash pad, good black visors, both inner window sill plates and strut covers. All for 30 bucks. They are used and I don't know if any are cracked. I still have my old ones off my car, so I will send them the lot and tell them put the best as a set and have some spares. Rather send too many than have some be bad and have to send more.

Thanks for the suggestion though. I will send them to crizin though.

You say you have 19lbs. What do ours come with? Its hard to find that printed up.

 

16's i think... maybe 15's

 

how do i find a dyno in my area?
anyone in Maryland know where i can get one done?

i should dyno my car, when i used gtec and got 139hp.
but this one time it hit 177hp. i am guessing the gtech goofed up somehow.

u can trick a gtech, for your friends... set the lbs to 3100 accelerate moderatly, verry slow then shift fast into 2nd, accelerate verry slow, then shift fast to third, and accelerate slow, by the time 3rd gear is done, you should be getting HUGE readings... first time i did it , i got 544hp LMAO mabie mines just messed up.

 

Ram air does absolutely nothing on the dyno; the car sits still, so there is no "ram" effect. Ram air really doesn't do much at all below 100mph, though in Shannon (redraif)'s case, the K&N filter in the airbox probably does help a little, though still only when the car is moving.

 

MARYLAND

Altered Atmosphere Motorsports
8011 Cessna Ave.
Gaithersburg 20879
Tel. 301-519-9669
Website: http://www.alteredatmosphere.com/

Creative Colors Motorsports
5915 Bay # 10
Urbana Pike
Frederick, 21701
Tel. 301-695-7006

Dynotune Inc.
5826 Westwood Ave.
Baltimore, 21206
Tel. 410-866-2900



European Import Performance
1203 Baltimore Blvd.
Westminster 21157
Tel. 410-871-0406
Website: http://www.eiptuning.com

Extreme Motorsports, Inc.
10621-I Iron Bridge Rd.
Jessup 20794
Tel. 301-776-2903
Website: http://www.extrememotorsports.com

New German Affiliate
1615 Perryman Road
Aberdeen, 21001
Tel. 410-994-0000



Hefner's Performance
550 Crane Highway North #33
Glen Burnie, 21061
Tel. 410-766-2800

Swift Racing
5730 Sunnyside Ave. Unit D/E
Beltsville, 20705
Tel. 301-982-4600

Tempest Racing
35 Henry Ford Circle #D
Waldorf, 20602
Tel. 301-638-3000




If anyone else needs to know where a local dyno is, check out http://www.dynojet.com

 

Seems like a pretty cool car. I like the stock look a bit more, but I can definitely respect the time and effort it took to create this car. That's the cool thing about 3rd gen's is that there is so much that you can do to them or with them. I believe that you are making good numbers for that engine with those miles. My 1992 3.1 liter V-6 was rated at 140 HP from the factory as a good reference mark.

 

Beleive me, it has been a LOT of work...and I have only been involved in it for just over a year, Shannon has been working on it considerably longer (since 89, though most mods have come in the last few years). The car looks naked right now, with its ground effects off and all the emblems removed...we're having it painted before the TA Nats (all but the hood and rear deck/spoilers, which were just painted). We have a little project planned for tonight, then off to the paint shop Friday night.

 

Here's the dyno sheet...I REALLY don't like the fact that RPM isn't even listed, and couldn't believe it when Shanno nsaid it wasn't on there. I have only dynoed at one place before, Atlanta Chassi Dyno, and even though they don't do the picture, they DO give you all the relevant information.

 

HAHAHAAHAHAHAHHA ummm...are you sure you had the ignition switch set to RUN...and the motor was running?!?! jeebuz christ...your motor's pathetic.. maybe you should invest in some NAWWWWS! yunno ***** NAWWWWWS ..gawd that poor poor firebird...it just needs to be shot and put out of its misery.! that is the ugliest peice of white trash 3rd gen ive ever seen in my life..and beleive me..ive seen ALOT

 

Its a nearly stock 2.8, a$$hole! What do you expect? The numbers are in line with a stock motor, and considering the miles I think thats pretty decent. Say what you want about the appearance, but it has won a lot of shows...Super Chevy, the Gathering..what has your POS won, f&ckstick???

 

ROTFLMAO!!!!!!!

 

There's got to one in every crowd.
Say what you want, but its running strong for a 2.8. That's obvious from the intelligent responces everyone else has posted. How many other 2.8s are running around with that close to the factory #s with 140,000 miles and no true engine rebuild? True my bottom end was repaired after spinning a rod bearing and throwing a rod, but that rebuild prob hurt the balance of the engine more than it helped.

Honestly, if I were you I would not admit to seeing so much white trash in your life, it tends to reflect badly on your residential living choices. And if your speaking/typing skills are any indication of your social standing, I would have to reply "It takes one, to know one."

Oh, and what they said in the movie was "Noss" not NAWWS. That is the ******* spelling for what a dog does to a bone.

:lala:

 

those r some good #, dont let em get to u, i hope to dyno my car within this month i dont know what to expect, my car has 214,xxx lol, but seriously thats not bad considering the miles u got and the mods.

 

What rock did this dumb Fu(k crawl out of???

Take your opnion and shove it.

I sure will ignor any question you ask in the future.

 

I found the rock.

Cascade Crew Regional Board

 

 

umm actually a dog gnaws on a bone. and...umm i had an 89 2.8 v6 5 spd car with..yeah 130+ k miles on it....and it ran high 15s low 16s. umm..yeah..heh..my transam's running 13.6's consistently on street tires,stock quadrajet intake,and stock exhaust manifolds.. thats what my car claims...what has my car won you ask..hmm many victories against cars like your's is what it has won. the damn thing is pure rice.

and gee thanks gumby..considering i have no questions to ask you..nor do i care for a response from you..its a free world..im allowed to speak my mind and give an opinion..you dont like it..tough shiat.


and about living in white trash areas..i never said i live ina white trash neighborhood {quite the oposite actually} but...drivign around..you do see some pretty rednecked crap. and uhh yeah..the way i choose to type {my own typing style} really says alot about the way i live my life eh??!?! please tell me how that works? i put you in the same genre as ricers. and all of your follower's also.

 

I call on your times for the 2.8 and your GTA ...unless maybe they're 1/8th mile. You'd be lucky to get the claimed time for your 2.8 out of the GTA. I don't believe you, neither does anyone else on this board...nor do we care.

If you could get your head out of your a$$ for a minute, you could see that Redraif said "******* spelling"...ie, you act like a *******. She knows very well how to spell "gnaw".



...what has my car won you ask..hmm many victories against cars like your's is what it has won. the damn thing is pure rice.


Really? You have beaten near stock 2.8 3rd gens ?Gee, I bet you're proud. I bet you have the fastest car in your trailer park!