Hey fellas, I've got a 1985 Fiero GT I'd like to build into my daily driver so I can park the Bird for some renovations. I'm planning a mostly stock refresher of the 2.8L Fiero motor I have.

All of the specs seem to be in good order when I checked em, and I'm looking for just a bit more power... Basically I'm asking what mods seem to work best on the 2.8L and are the things you guys are doing comatible with the Fiero motor?

Also, the fiero V6 seems prone to spinning bearings and I am also looking for a HV oil pump for the v6 and I haven't seen any out there... anyone know of where to find one?

 

Not sure about the Fiero, but the '85(6?) FBody V6s got a SUPER improvement to the oiling system - ours are good up to about 7k rpm, stock. Grooved bearings, and bigger bearings, I believe.

Your Fiero 2.8 has a bigger TB than us, built by Holley. A lot of people like the Holley name, I say it's just a name - polish the intake, and throttle body, and gasket match everything. That'll help some.

Do you have a 5 speed? Massive improvement there. The auto is literally a slush box in those things!

Since you have a 2.8, you can stuff a 3.4 block under there, with 3.4 injectors, and no other changes. The block is the same external size - nifty, eh?

 

Your Fiero 2.8 has a bigger TB than us, built by Holley.

NOT TOTALLY TRUE
THE TB BLADE of a Fiero & F Body ARE VIRTUALLY IDENTICAL IN SIZE.
The TB used on a Fiero was farmed out to be made by Holley.
The Fiero does have a larger aftermarket that does produce aftermarket larger TB for Fieros
FROM THE MIDDLE INTAKE, UP, the Fiero is different than F Body.
A Fiero intake on a F Body, the opening exits at the alternator.
Seek out a 3.4 mill & insert for instant fun.
Use 3.4 injects, balancers, flywheel (IF automatic)
Lucky
I Love Fieros

 

So the blade's are the same size? Then what is it that's so special about the Fiero TB? Is teh opening bigger, or what?

 

Now why doesnt this place have TB's that work with Fiero's?

Whats so different between the two?

http://www3.sympatico.ca/fjpeters/throttlebodies.htm

 

I have seen 350's in Fiero's.

 

What one will eventually notice is that
A Fiero TB
IS A
F Body TB
With these differences:
It is "upside down", with all attachment fittings "slightly off" what "F body owners" can use.
Yep, a casting part that says Holley is "built in"!
Why "F Body" owners not the "same Privlidge" as aftermarket following?
Have to realize back then
the Horsepower Wars were on & the Hi Po Lineup
DID NOT include a V6 Firebird!
A V6 FIERO was a HOT ROD back then.
The Holley name was "fitting" for performance image in a Hot Rod Fiero.
All F Body V8 wanna be buyers were waiting for factory 350 installations.
Why aftermarke shun us?
Write them, let them know.
Honest, V6 3rd gen F Bodies is considered a "growing market".
Who has Pacesetter header link?

 

That's nothing.... add another 105ci. Look for the 'Fear Arrow'

Now THAT's a Poncho!

 

will the Camaro 2.8 drop right into the Fieros?

I was goin to post this thread but you beat me to it lol

 

well, they use the same engine mounts and stuff like that. But im pretty sure some of the part would be different. You would more than likely need to reuse some of the Fiero parts.

 

well thats spicefic,lol

like what parts

 

Try the J.C.Whitney Catalog- They sell Pacesetters

 

A Fiero plenium and TB on our F-body cars would face the firewall- would not work-

also the stock Fiero Holley TB is 52mm- same cfm as ours, only made by Holley with a different linkage that will not work on RWD motors, works only on Transverse motors.

 

Are these Pacesetters direct bolt-ons for our cars or what? Or are we talkin' for the Fiero's here.....?

 

The pacesetters are for a 93-95 F Body.
Not smog legal for our 3rd gen.
The Fiero manifolds are great as they have no EGR on them.
The EGR is attached elsewhere on the exhaust system.
I've sent JC Whitney an email
Haven't ordered anything from them since 1972 or so.

 

it's on the y-pipe. The 2.8L Blocks in the f-body have a better oiling system? Does anyone else have more concrete info on this?


And I've sen all sorts of stuff in the back end of fieros, from 4.9L caddies to blown big blocks. There is a big fiero show every year in Carslile PA in May.

 

The 2.8L Blocks in the f-body have a better oiling system? Does anyone else have more concrete info on this?

I WOULD THINK THAT
this may have gotten started regarding the four cylinder engine fires.

OR because the East West engine is not great oil set up compared to the North South engine oil set up F body.

THIS YEAR Carlise for the 50th Anniversay of Corvette!
Coming soon I believe as June 28th is 50th intro of Corvette

 

Four banger oil fires came from bad connecting rods, it had nothing to do with the oil system, engine design, or pontiac. Thank the foundry and GM for forcing them down pontiacs throat.

As for differences, the starter is on the opposite side of the block in a fiero and it would require new holes to be drilled in the block. Rodney Dickman sells a jig to do this, but it is for putting a rwd block into a fiero not vice versa. I do not know if it would work for putting a fiero 2.8 in a camaro.

On a side note, a 2.8 Fiero is much faster than a 2.8 or a 3.1 fbody. I have owned both. The reason for this is the Fiero is lighter and it doesn't have as much driveline loss do to the lack of a driveshaft.

 

Add in a better flowing exhaust system, too!

I also heard the four bangers used more oil & then ran down low on oil, then o-heated & fire up the Winnies!

I used a rental Fiero for 10 days & 3,000 miles
Had one of the best times of my life!
I have Fiero seats in my Blazer.
I love headrest speakers!
I LOVE FIEROS!

 

Yea fieros are great just sux theres none around me for under 5Gs

 

It was a connecting rod issue only, it was true the 4 bangers had oil issues, however the 85 got decent rods and the fires stopped.

Any Fiero you buy today has good connecting rods or it would have had a fire a long time ago.

 

SO does the camaro/firebird have a better oiling system than the fiero block? It would be nice to know since I see about 8,000 2.8L F-bodies in the local yards around here...

 

BOTH VEHICLES have an 80Lb oiling pressure system.