finally got to run at the drag strip w/ the 3.4 in. i was pretty impressed. R/T wasnt the greatest, but hey.

R/T .944
60 2.201
330 6.625
1/8 10.394
MPH 66.69
1000 13.565
1/4 16.262
MPH 83.09

my friend was running a 91 talon at about 15lbs of boost. he ran a 14.5. i had him in the 60, lol. after that i heard spooling coming up on the side of me and that was the end of that, lol. oh well, good times anyway.

 

Somthing is holding me back for some reason....You running the 2.8L intake? The best I had outta 3 runs was a 10.75.... That's pretty slow. Does your tranny hold first gear past the flat spot in the powerband (mine does, need a manual).

 

yea ive got the 2.8 intake w/ 3.4 injectors. ive got a manual so i dont have to worry about any of that stuff. just redlining it, which i did plenty of, lol.

look in my sig, ive also got some other mods done to it, that may be the difference between us.

 

no offense but those times arent that fast with the mods u have... why do an engine swap if ur gonna get maybe .8 seconds off the quarter in speed? but i guess keep trying maybe u'll break into the 15's next time:rockon:

 

I got a few:
AFPR
Boxed LCA
Boxed Panhard
Lightweight flywheel
High flow cat
2.5 inch to Super turbo muffler
pretty red paint

an 7plagues, he probly dropped more like 1.8 seconds... most 2.8L cars are high 17s, low 18s. I cut more than 2 seconds off my 0-60 (as far as G-tech is concerned..). The trick to making the 3.4 a running engine is letting it breathe. I know a 4th gen owner with his STOCK 3.4 running a 15.9. that's pretty goood. A hihger flowing intake, hedders and a little extra fuel and you have a quick car (you won't be losing to a 4banger, minus turbo). They say 10hp= .1 second, 100lbs = .1 second. But, there's no comparing the 3.4 to a 2.8, torque is nice to have, easy to manipulate.

 

yep, thats about how much time i lost on it when i swapped out the 2.8. i couldnt even get into the 17s, but that was with leaky injectors and a couple sensors that were bad.

what do the rest of you think? is this slow for what i have done on a 3.4? keep in mind the thing weighs probably around 3300lbs w/ me in it.

 

a stock 4th gen with a 3.4L goes 16.9 stock. So, you are about .6 seconds faster with no major mods.

 

well a well tuned 2.8 can turn low 17s so i was goin off that. but i suppose those are pretty good. i just thought it would be faster with the 160hp and 200lbs not to mention the mods and stuff for a car that weighs like 3200 or so pounds.

 

Not to offend anyone but the numbers i see posted from people who have done the 3.4 swap do seem pretty weak. I mean everyone says the 3.4 adds so much power but the numbers posted arent much faster than a 2.8! Considering the tq gained with the 3.4 swap you would think the times would be quicker.

 

Can you spin the tires through 1st gear and into second, in an Auto? I can . I didn't do the swap thinking I was gonna OWN every car on the road. Considering it takes a helluva lot of mods to knock off as much time, i'd say it's worth it. All the boltons you can do won't make a 2.8 as fast as a 3.4. Now, do all of THOSE boltons to a 3.4, you get much better gains. Kinda like comparing a 305 with a 350. I loved my 2.8, I had doubts about doing the swap, it took me nearly a week, I had a lift, I'm a mechanic. I was ecstatic the first time I drove the car with the new motor. It was raining the first day I drove it. I would cruise down the road about 40mph, deck the throttle and watch my rear come around. My 2.8 couldn't do that. When I had the 2.8, I had trouble beating some imports, now, they enjoy the sweet sight of my polished taillights. Do it Brobert, you'll be glad you did.

 

I would cruise down the road about 40mph, deck the throttle and watch my rear come around. My 2.8 couldn't do that.
____________________________________________________

Mine does thanks to the posi rear really sucks when i dont want it to do it. And im just looking at the numbers here. Going from a 17 flat (stock 2.8) to a 16.3 doesnt seem like all that much of a gain. I just expected a little more than that.
Im still gonna do the swap though, unless i get a good deal on a v8 and trans. Place near me has a 3.4 with 33k on it for 500! Wish i had the money. If i do end up with the 3.4 in it id still like to buy a v8 3rd gen just to mess with.

 

i was impressed with the gains i got out of it. ive still got the 2.8, i took the heads off tonight and im gonna have them ported, polished, the whole nine yards. the valves in the 2.8 were all white, no wonder i had no power from it. im also gonna do the intake. but i didnt think it would do that well, i can break them loose when i slam into second gear (manual).

 

17.071, 2.8/T5 STOCK.

16.7 on one run with the 3.1 + MTC-5... I think a 16.5-16.6 is in her, though....

dropping .7 seconds is actually quite a bit, in the world of drag racing.

Keep in mind, you added 40 lbs/ft of torque, but only 20 hp. It's not like you're dropping a worked over 383 in place of the 2.8. 7/10ths is a respectable gain, from a stock motor swap!

 

what are the specs on your cam doward?

 

I got 12 runs in at the strip last night.....since I put the stall in I'm having traction probs now, my best 60' was a 2.169, but that's better than my previous 2.220 best. On a good note, my car is officially a 14 second car now in street trim.



EDIT: It was a 2.152 best

 

278/288 adv
204/214 @ .050
.422/.444" lift (with 1.5 rockers)

 

I must be missing something here also. The best run I got out of my 2.8L was a 15.67 @ 85.1 mph w/ an auto. Granted, I did a TON of stuff to the car (check out the website). I swapped in the 3.4L and I haven't got it to the track yet (excuses, excuses) but on my 'private strip' I am trapping around 100 mph w/ a T5.

 

Just as a side note but aren't the valves on the 2.8L smaller than the valves of the 3.4L? I guess it isn't clear to me what motor you would install the P/P 2.8L heads.

 

The 2.8 induction makes the 3.4 loose some power?

 

Jerriko, aren't you the guy with the modified TPI style intake? Agood2.8 was telling me that he was in the 15's with his 2.8, that is crazy. I'm jealous . What all has been done to the motor?

 

I see I forgot to change the address for the website but now it works, but for the short list.

3.4L block
-gold racer roller rockers
-crane mechanical cam 290/300 .492/.512
-crane lifters, pushrods, springs, retainers, etc
-bored .30 over
-high volume pump
-cloyer dual roller timing chain
-heads ported/polished w/ 3 angle valve job

Bolt ons
-modified intake w/ dual 48 mm throttle body
-msd 6a w/ msd wires, msd coil, ngk plugs
-pacesetter headers (modified) w/ true dual 2 1/2 exhaust w/ dynomax mufflers
-asp pulleys
-a/c pump delete
-cai w/ k&n filter
-adjustable fuel pressure regulator
-autemeter phantom gauges

Drivetrain
-rebuilt T5 from 91 formula
-centerforce dual friction clutch
-1LE aluminum driveshaft
-richmond 3.73 gears w/ torsen t/o unit

Suspension
-kyb struts/ shocks
-subframe connectors
-boxed lower control arms

I think that covers it but there may be more that I forgot. Right now I am playing with the eprom. Switching from an auto to a manual without reprogramming the eprom is a huge mistake.

 

from what ive heard, the heads are the same. redraif has hers p&p and bigger valves and all that good stuff. hers flow better than the 3.4 heads. thats probably what im going for, along w/ the intake manifold as well.

 

Well, that's strange. I have compared the heads from my 2.8 to 3.4 and the valves were different. The Fiero Store originally told me that the heads were different.

 

im just going by what i read on here. it may be that theyre different, i dont know for sure.
https://www.thirdgen.org/techbb2/sho...hreadid=234177

anyone have any actual numbers on valve sizes or anything between the two heads?

 

Carb'd 2.8s-

1.6" I
1.3" E

MPFI RWD 2.8/3.1/3.4

1.72" I
1.42" E

 

Hmmm...all the info we got said the 3.4 heads were identical to the 2.8 heads.

Got mine to the track...
On street tires and I was totally spinning the tires on take off!
weight 3555lbs: darn heavy!
Also the tranny was acting up...have and auto and raced in D. got to the 3-4 shift and it was not giving it to me...Totally bumping the revlimiter in 3rd. Had to back off let it shift and the hit it. Best time was:

R/T: .721
60’: 2.338
330: 6.897
1/8: 10.694
MPH: 64.63
1000: 13.989
¼: 16.802
MPH: 80.09

Plan is to redo my heads though...more aggressive porting and a serious valve job with new flat valves. Going to mill the head down a bit to get the compression up. New roller rockers to take atvantage of the cam. Then I'm going to go with that larger TB from Finland, if they will let me know when its done. then finally, I;m gonna check into extrude honing the plenum and runners. Car is starving so bad for air. Then a mandel bent exhaust: Got a cut out in front of the cat that gave: 4.3ftlbs tq & 8.2 HP. SO the old exhaust has got to go! Finally better traction with lighter wheels & tires that will hook!

 

weight 3555lbs: darn heavy!


wow that sucker is a pig. Whats making it so heavy???

 

Alot of little stuff. I'm guessing mostly the soundproofing and wheels! The serpants are chrome plated steel! I have done nothing to lower the weight of the car.

 

I bet you could break into a high 15 of you lost 500lbs some where. My Buick wagon is a 4000lbs monster. Your not far behind.

 

That's a heavy car.... The whole starving for air problem could be solved with a little creativity, Have you seen Jerriko's intake? I'm runin a 16.4 right now, well, out of 3 passes (had issues with the motor). I don't have the cam or head work either. The rotational mass of those rims is probably killing your acceleration, maybe some nice Boyd snowflakes for weight savings??

 

You were bouncing the limiter in third?? At only 80 mph? My ***, what kind of rear do you have in that, a 4.50-something?? There's no reason for you to be anywhere NEAR bouncing the limiter in 3rd... If anything, I imagine on a stock rear, you'd JUST be getting into third....and maybe halfway through that gear on a beefier rear. Something really isn't adding up here.

 

not to start anything but the 3.4 in a 4th gen is a 15 second ride to start with my friend has a 99 ta with a 3.4 and he's pushing 14.99 with just a k&n air filter

 

Yeah it takes a little more then slapping a home made turbo on a 3.4 to get into the 11's. Not bashing or anything, just reality.

 

A '99 4thgen has a 90*V6 3.8, not a 60*v6 3.4. I eat 4thgen 3.4's for lunch with my '87 2.8( literally by 3 full carlengths from stoplight to stoplight with the 4th gen FRESHLY tuned-up and a veteran 60yr old Dragracer behind the wheel. I was following him over to drop that car off at the body shop- or should say, he was following me)- My car weights in at 3100. Redraif, you have too much weight, more than the average V8 3rdgen.

 

A '99 4thgen has a 90*V6 3.8, not a 60*v6 3.4. I eat 4thgen 3.4's for lunch with my '87 2.8( literally by 3 full carlengths from stoplight to stoplight with the 4th gen FRESHLY tuned-up and a veteran 60yr old Dragracer behind the wheel. I was following him over to drop that car off at the body shop- or should say, he was following me)- My car weights in at 3100. Redraif, you have too much weight, more than the average V8 3rdgen.
------------------------------------------------------------------------------------
what planet are you from and how can i get there????:lala: :lala: :lala:

 

Actually he's right. The 3.4's didn't stick around for long. And it isn't a "ta" if it's got a V6 either, it's a Firebird.

 

I think it's planet "serious suspension modification" in the system of "2.8 + headers/intake/exhaust work"

Could be wrong... Dean's got nothin'!

 

Who the **** is this loser? Coming in here like your the hottest punk since sliced bread, Take a look at what you're insulting *******. http://www.cardomain.com/memberpage/518752/1

LEARN SOME MANNERS

Edit: I have to explain to every new V6 bashing V8owner that coomes into here that this is not my only vehicle and I don't pour ever red cent I own into it to make it straight line fast- I have other cars that do that- this is a street car, I built with the intent to remain a street car and out handle anything around, and I could put a V8 into it anytime I want and I don't want to- I had a 350TPI w/ harnees that was given to me and I turned it down.

 

lol that's awesome. i almost spit my coke out when i read that, i think that's going in my sig

how's the new intake working out? last time i checked you were still working on the plenum but i can't tell from your site if you've finished it all yet

 

I was running the auto tranny in D. I have a 3.73 rear, 2800 stall, and a transgo shift kit, but no tach, so I don't know the RPM. MPH, I think was in the 70s when it bounced. It would not shift into OD at wide open throttle...I think I had a valve hanging. Heck on the dyno it never did it, though you are not driving it the same way. Anyway, the tranny never allowed the final shift with the throttle at wide open.

The next day, I was experimenting to see if I could get it to do it on the hwy entrance ramp, something popped and it has not given me a prob since. I'm going to run on a road course tomorrow and plan to really give it a good test and see if it does it again. If so, I have a good tranny guy that I will have go thru it.

 

Vsixtoy runs the fastest NA 2.8 in here. He DEFINATELY knows his shiat, show the guy some respect. And for RAIF, even with the 3.73, you should be going through the traps at about 4500 rpm in 3rd. Invest in a Tach, you'll enjoy seeing how fast the RPM ramps up when you get on it.

 

Tach is on the list...want to go all aftermarket digital guages, esp since the car was only equipt with idiot lights.

 

Its pretty much finished except for just welding the top on. I don't want to go any further with it until I get the entire assembly fitted onto a new motor and plumb everything- like an AFPR. I want to experiment with fabbing a remote adjuster because you can't reach the AFPR's without pulling the upper plenum. And also want to fit the fuelrails and mill clearance into the bottom of it for a cockpit fuel pressure gauge. So just in case I have to breach the inner chamber in the final acessory fittings, I don't want to have to cut it back open.

I have decided to start on the motor once the current custom brake project finsihed. The mini can wait- I got to figurung that I didn't decide to build this car this far to hold off on the motor- afterall, EVERYTHING else is finished and completely built. Motor will be finished within a year- it will be bulletproof.

 

Don't feel too bad, I ahve the same curse...I went aftermarket on the tach. Oilpsi,temp and NO2 pressure are going in right under the central air vent, gauge cluster swaps are annoying.

 

YAY!!!!!! I'm drooling in anticipation man! I've decided to split my projects(or was it decided for me?), I pulled the motor out of the Triumph 2 days ago, what an easy task. My father wants the use it for SOLOII (I got him hooked). So I'll be working on the Spitfire half the time. I'm still droping in the cam as soon as it's delivered though (Fittings for the nitrous will be here tommorow too). I'm going to have me some fun now.

 

Its tough in life to multitask. I'm actually starting to go crazy, I need some time off badly form working too much this year. I have four of the 12 windows I bought 1 month ago for my house installed, so I have to finish 8 more still, then on to the next house project, it never stops. The cars come second- and I am to the point that I am only screwing with the cars I drive daily- forget the rest for now. Thankfully Moday I leave on a 4-day cruise with the family, then again in early August I'm taking another vactaion for 1 1/2 weeks and go camp out on the beach up by Santa Barbara with the family the inlaws new 31' motorhome. I'm young enough still that I can build the Mini and roadrace it fulltime in another 5years after the house is done. I know I'm old to most of you but, yet I'm only 37 (My kid tells me I seem 25 compared to her friends old fogy parents- I hope that lasts)

 

Locked for flame war prevention.

Dean, this is how you've gotten yourself banned repeatedly. We held off on banning you for a while to see if you'd reformed, but you chose to retaliate against a post which could have easily been quietly ignored, and broke a small slew of rules in the process. This is your only active warning. If you do it again, it's back to the ban fest, this time with more people paying attention to actively enforcing it.

On Probation.

 

Z28guy83, Congratulations!!!!!
You're the lucky first person to test the anti-trolling act, and you've won a prize! Gary, tell him what he's won.

*Strange voice from the sky*: "Today and today only, we're giving away free probations! We've reserved a VIP seat for you and two lucky friends (friends' attendance optional) in the "I can't edit my posts, signature, or post pictures" room! Included in this wonderful package is the satisfaction of having a new title which shows all that you cannot follow the rules and the all-expense-paid usage of a recently retasked CIA spy satelite which will be closely watching everything you say on these boards for the next month or so! Back to you, Tech!"

----------

You're On Probation, because it's fun....if you know what I mean. (Any further violation of the rules will also result in a free banning)