will the 3.4 upper intake planium work on the 2.8 lower planiums and is it beneficial at all? i was looking some pics and i have never seen a 3.4 intake off of a car in real life and i was wondering if it would work, i mean, that would alminate the 2 piece design of the 2.8-3.1 intakes and put in that much more straight, and i am sure better flowing, 1 piece intake. question now is, will the throttle body and all of its linkage hook up? is there vacuum ports and what not, enough hood clearance? a thought i had on the way to school the other day. a friend of mine has a 95 camaro with the 3.4 in it and i am going to look at it tomorrow to see what all there is to put it on my motor and if it is possible at all. any comments or ideas would be greatly appreiciated.

 

throttle bodies are different. did'n't even think about putting the 2.8 tb on the 3.4 plenum. Also, you will need to do some cutting & bonding/welding. In the back of the 3.4 intake is an air crossover that prohibits the use of the distributor. the last obsticle is the egr tubing. they enter the manifold in different spots. the egr tube on the 3.4 is about 4" long or so. compare that to the 2.8/3.1 tube .

If you can overcome these obsticles, I really don't see a problem.

 

my egr is blocked off anyways, so i can get around that quickly. the air crossover tbut wouldn't be that hard to fix, just cut it off and stuff some sealent down in the holes. if you need to run a 3.4 tb that could be were i could run into problems. is the throttle position sensor the same? what about the other vacuum hoses as well as linkage? like i said, i will look on my friends tomorrow. can an adapter plate be made for the throttle body maybe? one of these intakes and tb shouldnt cost too much at a bone yard right?

 

tpi sensor is on different side, & tv cable hook up, if I remember right, is isn't there. basically, if you turn the 2.8 tb 180*, there you are. I think the bolt holes may be 180* also, just to cheeze you off.

 

well, i looked at it today and i think that it is possible to do. it will definetly take a little time. i don't have the money or the time right now, but i figure it doesn't cost much to do the wind-work. my dad and i keep talking about getting a mill/drill press. i think that i could fab up some stuff that would work real well. i could make an adapter for my tb to go onto the 3.4 intake as aposed to trying to retrofit my junk to the the 3.4 tb. the egr will probable be pulled completely out. i don't use it anyway. if this thing works as well as i think it will then we might have some more stuff coming our way in the world of performance. can't figure out forced induction quite yet but i am sure that a supercharger kit wouldn't be to far off the future. if i ported and polished this thing it would flow like mad. i can get one from a bone yard for cheap. (in theory any way) and i will see about getting another 2.8 tb so i don't mess my stock one up. guess we'll just have to see how this all works out, eh?

 

FYI
The OPENING VALVE SIZE of a 2.8/3.1 TB compared to a 3.4 TB
IS VIRTUALLY IDENTICAL.
Don't waste your time to play with a 3.4 intake thing.
It looks nice
BUT
the neck shoots down & you cannot access a 3.4 intake set up as easy as the three piece MPFI stuff.

Wanna do something nice as a time waster......
I want to do this, too!!!
Fiero intake.
Cut off the TB mount, TIG WElD ON A 2.8/3.1 TB mount.
The Fiero intake angles exactly at the F body alternator area.
Compliment with the Fiero Valve covers.
Don't waste time on the 3.4 stuff. Ain't worth the effort.
AND the Fiero Idea is easier to execute!

 

since the 3.4 has more cubic inches, wouldn't it need an intake to flow better? that's my thinking anyways. and with some head work and intake work and possibly a set of headers, than i would have one kickin 2.8. the bottom end of the motor has already been bored .040 over so i know that if i could get alittle more air/fuel mixture to this beast that i could really have something interesting. a crane compucam is in the near future too.

 

GM Designs manifolds ONE WAY

To fit under a hood.
The 3.4 is not designed for making HP.
The flow from one manifold to next is probably identical.
I know for a fact the TB is the same & it's identical opening sized on the Fiero, also.
What is a good fact to know....
The 3.4 makes more power based on cubic inches, cam & timing design.
Not head design changes (beefier springs & more cylinder head metal on the spring seat, yes)
Not intake design changes (altered the design to accomidate lower hood line).
All ya need do is beef up your bottom end with a 3.4 block.

 

Want a better flowing 3.1. Talk to this guy http://www3.sympatico.ca/fjpeters/throttlebodies.htm
I emailed him about a TB for the 3.4l . Fast response, and seemed very nice as I was quick and to the point in my email.:lala:

 

i currently don't have the money to do something like putting a 3.4 shortblock under my current 2.8 upper motor although it is something to consider. my 2.8 bottom end is brand spanking new so i don't want to get a 3.4 right now unless someone just gives it to me or something. the argument your using about the intake is valid and i understand where your coming from about the lower hood line. i was just thinking that it would flow better since there isn't that big bend right in the middle like in our three piece design. maybe down the road i will find a 3.4 short block for cheap and make something out of it. but right now, the 2.8 is all i got and all i can afford, i figure i will make something out of it.

 

Why not just port the existing manifold (or one from a junkyard)? That's nearly free, just takes some time. There is a LOT of material that coule be removed for better flow in a 2.8 intake. The gaskets usually don't match up, so gasket match everything, and there are lots of restrictions that can be removed. Redraif ported her intake (just did the lower last week, the other two pieces were already done), and we're going to see what it will do at Silver Dollar Raceway on Sunday (GAFBA Shootout...you should come, being that close). I'm sure she has pictures of what she did, they just haven't been developed yet. I'm not convinced that the Fiero intake is really any better. The air has to turn rather than make a straight shot in. We did install Fiero valve covers, though. I sanded all the grooves out of the top and polished the fins, and she painted the red part (we stripped it to the metal first) with testors candyapple red. It looks pretty sweet!

 

i'd like to go but it being on a sunday it really interferes with church. i love going to church more than working on my car (if one can fathom that) so i will not be racing on sunday. it seems like the porting of a 2.8 intake is looking like the route i need to go. but i want to get another set of heads so that i can get them ported and polished, it doesn't matter how open my intake and exhaust are if the heads won't flow better. i am still throwing some ideas around. right now, i gotta put a new fly wheel in the car, i broke mine. don't ask how, it's way too embarassing.

 

The head porting would probably help quite a bit...doing a little research in that area right now

 

Head porting research

 

I have a free 2.8 auto flexplate for ya if that helps.
Actually have three!
Just pay for shipping from LA, CA.

 

thanks ked, i appreciate the offer, i already bought one from advanced. i will put it in tonight when i get home from school. it sucks so bad to drive a 92 sable station wagon to school while the rs is out of service.

 

Rats, can't even give things away some days.....
Wish I had posted response earlier to help ya.....
I recently drove a Sable was acceptable...
At $20 a day unlimited milage was better!

 

a sable is still better than a Pacer of Gremlin

 

Past weekend
I went to Pomona swap meet
On way out found a pile of mags for free.
One was 1975 Car & Drive issue containing an article of their driving impression of the New 1975 Pacer.
They were "Pleased" as occupants fit great inside the car.
First economy car in ages to claim that.
Price
Try $5138 in 1975 Dollars, that was expensive!
I had time to read that article this AM, funny you mentioned that!

 

That is expensive for an economy car in 75!!!! I think my parents paid about 4500 for their new Dodge Aspen wagon in '77. How was the Pacer equipped? I know AC carried a hefty price tag back in the day. My parents' Aspen had a slant six, automatic, no AC and an AM radio. Also a roof rack, spoiler and deluxe side trim and full wheel covers.

 

Car Craft had some fun a few mos back w/a slant 6. aftermarket intake, exhaust, header, nitrous went in the 13s I belive

 

I thought it was Hot Rod? Oh well same publisher....

I actually killed that car when I was 16 (trees and bondo'ed frame = :nono: ). I replaced it about two years later with another Aspen wagon but it had a 318. Great car -- had alot of fun with it. Got me through college at the U of Dayton. After Graduating, I got rid of the lean burn system, added dual exhaust, edelbrock 1406 carb, and then the thing moved well. Unfortunately, unleashing that extra ponies gave the car an appetite for trannys. After it ate the second one, I got rid of it and picked up my 85 Camaro

 

Just for fun I'll type exactly the option list.
PS, Before I even read & type, I still have a order form & agreed upon price for a brand new from the factory loaded 350 automatic 1974 Corvette.
And that price was $6600. That was my Dad's that we had.. AND my 1974 Corvette, new, went for $5800 (I have receipt) & sold for $6957.96

1975 AMC Pacer Base $3299.00
258 Cubic Inch engine, 1 barrel carb! - $69
Auto Tranny - $239.99
AC - $399.95
D/L Package - $289.00 (Remember the indian mojave tent pattern on seats & Wrangler jeans seats, too!!)
AM/FM 8-Track - $239.00
Announcement package (I didn't make that up!) 1 - (tinted windows, power steering) - $139
Announcement package 2 (front sway bar (imagine a Pacer without it!! LOLOLOL!!) steel belted radial tires, power front disc brakes) $203.45
Styled Road Wheel - $85.05
Rear window washer wiper - $49.95
Door vent Guards - $23.95
Light Group - $34.95
Visibility Group (Ya need this in a Pacer, right LOLOLO!!)$49.95
Ca. Emission Test $45.00
Grand Total
$5233.20
Horsepower was 95 Horsepower at 3050 RPM
Torque was 179 @ 2100
Axle ratio was 3.08
1/4 Mile 20.4 @ 65.8MPH (feel better about your V-6 now!!)
Fuel milge 13-17 MPG

FYI
NEW Datsun 280Z $6879!
17-22.5 MPG, TOO!!
1975 TR-7 (LOLOLOLO!!) Cost $5600
NEW 1975 Corvette Cost $8300

That was fun to revisit!

I also scored a August 1966 Road & track with the BRM V-12 engine, naked, on the cover. So sexy looking! It's the snake exhaust pipes that does it with the Webers velocity stacks in the middle of engine!
Wish it was September issue, then it's new car introduction (like the 1967 Camaro!!!!!).