3.1 carburated

[streetdreams]

anyone seen one?

[EurosportZ34]

all the 2.8s and 3.1 variations that i've seen are fuel injected. did they even make a 3.1liter carburated?

[19Cutlass94]

It would make no sense to make one carburated.

[streetdreams]

in a knowledgeable informed answer I would like to know why?

[Robby1870]

The old 2.8L iron heads came carbuerated in like the mid 80s. If you even find a Edelbrock intake for a 2.8L, its from a 2.8 carbed engine

[streetdreams]

ya I was just lookin at those edelbrock intakes at http://www.caraddons.com for $287

[THe_DeTAiL3R]

Aside from MPFI (and SFI on the 3100s) the only other that I know of is TBI 3.1s on the Lumina/Transport vans..

[streetdreams]

I was talking to a tech at pontiac about the 2.8 and he advised me that this would open alot of doors if I chose to open up the motor. looking into research on the x11's 2.8 and 3.1 setup, the 2.8's components in the fiero and camaro I think it would be an opportunity but it deffinitly would mean internal modifications and at least I could say I had the only 3.1 carburated around town.

[digitaloutsider]

I could buy an Iron Duke and say I have the only Iron Duke Bonneville. It doesn't mean it's a good idea.

[streetdreams]

that is far from a reason for considering it, just a positive side effect.

 

there are far less restrictions for an 88 2.8 going carburated. you have to realize the 88

had a few issues with EFI that make it a bit harder to extract power from than kater years. for one its not sequential rather 1 bank fires at a single time. the intake is one of the worse designs to come out of a 60 degree v6 and it uses BOTH a MAF and a MAP sensor making tuning a nightmare. but by removing the EFI you can rid 3 problems unique to the 88 (injectors,intake and MAF/MAP) not a road followed by many but a popular choice for HO offroad and I think a great idea for torque especially if you can get your hands on some gen II 3100 heads ported out big

 

b.t.w anyone wondering about the title reading 3.1 and me talking about 2.8 is the fact I would want the motor pulled,rebuilt, bored and balanced to roughly 3.2 or .60 over. the 67mm block can handle it

[THe_DeTAiL3R]

Doesn't the carbed 2.8s have different heads (iron?) than the series II 2.8/3.1 which are aluminum (in the 88+ w-bodies)? 88 was the only year to have a MAF sensor in the 2.8 w-body, but hell I converted my 88 GP to 89 style by changing the chip and VSS and noticed no difference in performance, it was still ass slow. I'm no expert on engines but if my memory serves me correctly the carbed intake doesn't match up with the aluminum heads (which would include the series III 3100 heads.)

[THe_DeTAiL3R]

Check out the history around 1986...

 

http://60degreev6.com/modules.php?op=modload&name=Sections&file=index&req=viewarticle&artid=17&page=1

[streetdreams]

no the intake has to be handmade thats what I'm working on right now. originally I was just going to polish the upper plenum and put it on a EFI car but since have decided to have a template cut out to take on a carburator housing very easily. the 2.8/3.1 will accept all 2.8/3.1/3100 heads and with few modificatations if going carburated but the issue is you have to build a upperplenum that will house a carburator and mate to your chosen intake.

[THe_DeTAiL3R]

okay then..

 

Good luck.