V6 carb car ? Help

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chris.r

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Hello from the UK.

I have recently purchased a 2.8 engined coupe that infact will get a rebodie with a BMW M1 body that I have,
I.ve bought the Haynes manual as a guide & studied the net. I cannot find any info on my car Its a 2.8 V6 but has one central carb (a bit like a Holly)& not fuel injection.

Info here in the UK is a bit thin on the ground, what I'm asking was a 2.8 carb car built or were they all Fuel Injection , ?
All the other cars I look at are Fuel Inj, cant find a carbed V6

Maybe I've bought a pup

Cheers Chris R
 
All the V-6's were port fuel injected. The 4-cyl had throttle body fuel injection.
Some folks removed the fuel injection and swapped on a carb. The ones that did this were because the carb setup had better intake flow if you were modifying the engine for more power. If modified correctly you could get over 220hp. The aftermarket intakes and carbs use to be the only way to get the flow needed to get over 200 hp normally aspirated. But now there is an aftermarket fuel injection intake available.

What size carb is on it?
Edelbrock makes intakes to fit a 2-bbl and a 4-bbl (Still avaiable from Edelbrock)
Offenhouser made a 4-bbl intake
GM used 2-bbl intakes on the S-10/S-15 pickup trucks.
The carbs were usually Holley's.
The Holley 2-bbl has 2 sizes 350 and 500.
The 4-bbl is the Holley 390.

If yours is a 2-bbl, it could be someone swapped a 2.8L (or just the intake/carb/distributor) from the pickup truck. If that is the case, a service manual from a 1982 thru 1985 Checy S-10 or GMC S-15 pickup truck may provide you with some help.
 
carb car

Thanks for that, I'll check it out after Xmas, I think its a 2 barrel Holly, one thing I notice is the rocker covers are not the nice alloy ones but plain tin & a strange oil filler cap on the rocker cover against the bulk head. plus the water system is nothing like the pics in the manualis nothing on the right of the engine. No thermostat housing filler cap etc.
Also it has tube headers that go into 2 pipes on the left side only
It has a torque reaction strut/mount at the rear of the engine like what I see on the 4 cyl cars but not on any photos of V6 cars.
Maybe it was a 4 cyl cat thats had a V6 fitted ?
being a strange car for the UK its hard to find anther to compare it to.
CHRIS
 
Sounds like someone took the entire engine from a pickup truck. Maybe they blew the original motor and due to availability there they opted to use the truck engine.
The truck engine used smaller valved heads and a 2-bbl. It's output was 115hp The original Fiero 2.8L was rated at 140hp.
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I have now bought another a Black 2.8V6 that is all correct, 1 owner from new, an English chap who live in the US & worked for Jaguar. He brought it over to the UK 2 or 3 years ago but never UK redistered it. Sadly he died just after returning & the car was stored. Very nice car.
The other sad thing he had an racing E'type Jag that remained in the US & the family cannot find it.
My next Job is to change the body to a BMW M1 body that I have but this entails a chassis stretch of 12 inch, so I'l scrap the first car.
 
Air Cleaner

I am trying to restore a 1986 Pontiac Fiero and am having some issues finding a complete Air Cleaner. I have the Canister but not the base that connects it to the engine. For starters I dont really know exactly what I am looking for, can someone send some detailed pictures of their cars air cleaner set up, or send me in the right direction. And if any of you know where i can get some of the parts I need shoot me a line.
 
davidyoung405 said:
I am trying to restore a 1986 Pontiac Fiero and am having some issues finding a complete Air Cleaner. I have the Canister but not the base that connects it to the engine. For starters I dont really know exactly what I am looking for, can someone send some detailed pictures of their cars air cleaner set up, or send me in the right direction. And if any of you know where i can get some of the parts I need shoot me a line.
Click to expand...

You can download the factory service manual, it has pictures and detailed procedures on everything about your car. Download it from here:
http://www.fieronews.net/fusion/down...download_id=12

There are a few places that sell used parts for Fiero's. You can do a search on google. One of the more popular places is The Fiero Factory in Alabama. http://www.thefierofactory.com/
 
Many of us Yanks would put the 2.8 heads on a Pontiac 3.4 and do a build up from mild to wild. The " FIERO " top plenum is a direct bolt on and the power gains are very well worth the effort.

http://www.mgexperience.net/phorum/read.php?40,1621726,page=1

There was a hot rod build where there was a detailed on line and in print article complete with photos showing the 3.4 shortblock mated with the 2.8 heads. Apparently, the 2.8 heads has better squench and gave a higher static compresion ratio. I will search the article and post it here later. Also the Crain Industries Cam Shaft # 272
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Indy Fiero said:
Many of us Yanks would put the 2.8 heads on a Pontiac 3.4 and do a build up from mild to wild. The " FIERO " top plenum is a direct bolt on and the power gains are very well worth the effort.

http://www.mgexperience.net/phorum/read.php?40,1621726,page=1

There was a hot rod build where there was a detailed on line and in print article complete with photos showing the 3.4 shortblock mated with the 2.8 heads. Apparently, the 2.8 heads has better squench and gave a higher static compresion ratio. I will search the article and post it here later.
Click to expand...

That is all incorrect. The Fiero 2.8L uses the large valve H.O. heads. These are the EXACT same heads (same casting and part number) used on the iron headed 3.1L and 3.4L. The link you provided has the heads used on the standard 2.8L. The valves are smaller in the standard heads.

There is no difference in compression. I believe the hot rod build was using a 3.4L block with the aluminum heads. The aluminum heads have smaller chambers resulting in higher compression. If you put an aluminum head on a block designed for cast iron heads compression increases, A cast iron head on a block designed for the aluminum heads will result is less compression.

Yes the Crane H272 is a very good camshaft for any iron headed 60 degree V-6 (2.8L/3.1L/3.4L)

Finally, swapping the 2.8L intake onto a stock 3.4L is fine. Many do this to keep the engine looking like the stock 2.8L. However, if you are going to build up the 3.4L with a larger cam, ported heads, higher compression pistons, headers, etc. The Fiero intake will be too restrictive. You would need to go to the Edelbrock intake for a carb* or the Trueleo intake for fuel injection.


* = There is a couple of other 60 degree V-6 intakes for carbs that are no longer made but can be found on Ebay.
 
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