A little bit of a question about the 3.1 L. L82.

[malloki]

Okay, i currently have a 94' olds cutlass supreme and well, honestly i hate computers controlling every thing in a vehicle and prefer carburation over fuel injection( just a personal preferance). Is it possible to buy an intake manifold from one of the older 60 degree V6s, one of the 2 barrel carburators, and a distributor and basicly go back to a distributor and carburator based?

[SappySE107]

No.

[bszopi]

You'd have to get iron heads as well, which will drop your compression significantly, as well as cause you to loose 30+hp just from the heads alone, and who knows what with the compression drop. The reason for the head swap requirement is that the ports for the carb intake will not align with the aluminum head ports.

[wanako]

you will lose so much power it's not even going to be funny. you'll be at like 90HP or something.

[Fierobuffoon]

Okay, i currently have a 94' olds cutlass supreme and well, honestly i hate computers controlling every thing in a vehicle and prefer carburation over fuel injection( just a personal preferance). Is it possible to buy an intake manifold from one of the older 60 degree V6s, one of the 2 barrel carburators, and a distributor and basicly go back to a distributor and carburator based?

For the sake of discussion I both agree and disagree with you Guyz answeres..*sp*

your correct in telling him that there dont exist any direct bolt on solutions other than a nasty backdating to Iron heads, which no 60deg memeber should have to use other than for door stops, but and i say but* Lets not forget the spirit of hot rodding,I have been planning on making a cast Aluminum manifold for 3x00 series engines that will use a 2 or 4 bbl set-up, and you can still buy remanned vac advance s-10 2.8 distributors which work just fine in place of that oil drive plug,make sure to swap the drive gears as roller cammed engines have harder cams., Going back to the v-6 performance book from the early 80's they had a carbed 12.5..1 CR 2.8 in there that made 220 hp witha 2bbl, Now for the last poseter, and his opinion of 90 hp..Look to the december or nov Hotrod magazine LS1 Head shootout, the difference between the carb and FI the Fi made less overall power the difference seems to be in the torque curves, which is how i tune my engines for longevity. Cfm flow is basically what all of us want on our engines, N/a ram tuning, Turbo or Supercharged, he has a desire to toss the factory F.I, id say tho just upgrade it to the Obd-II system and tune that.
Peace.

[geoffinbc]

The reason he said it would make 90HP is because the heads will flow less on top of the massive compression loss. Sure if he installed custom forged set of pistons he could get a lot of power back, but I don't think that is the goal.

There is absolutely no reason to switch back to a carb. If you have an existing system that works whats the point? Your just going to loose economy, drivability and reliability and in this case power on top of that.

If you think EFI is too complex or confusing then grab a book and read up on it. I don't believe for one second that the vast majority of people know how a carb works. do they truly understand venturi depression, emulsions tubes, air bleeds, power valves and booster? Not likely. The only thing they know is that if they bolt it on and provide it fuel it will run. They set the idle and go for a drive. It seems like it works good so it is left at that. No tuning is ever done but you have no feedback, no check engine light and no error codes. I guess ignorance is bliss when it comes to fuel delivery.

EFI on a stock vehicle works day in day out it does not care if it is -50*C or 50*C or if it is at sea level or in Colorado it just work and gives the correct mixture every time. Even stock systems aside the aftermarket has gotten to a point where you can bolt on a system and tell it a few things with the supplied programmer and go for a drive and it will sort out the finer points by itself. Pure genius! After the initial setup the ECM will quietly monitor the engine and give you a heads up when something is wrong.

So if not knowing about EFI is truly the reason you want to rip out a perfectly functioning system and replace it with something inferior then why not simply learn about it? Seems like and easier and cheaper route to me.

[mrl390]

great post! /\ /\ /\

[2.8-350TBI]

Aaaand this thread is officially toast.

If you dont understand a GM fuel injection system, then I dont know how many brain cells you have left lol

[pocket-rocket]

Aaaand this thread is officially toast.

If you dont understand a GM fuel injection system, then I dont know how many brain cells you have left lol

Easy, killer. It's his first post on this board. He's obviously not a guru as far as EFI goes, but there's no reason for insults like you don't know how many brain cells he has left.

[Fierobuffoon]

Easy, killer. It's his first post on this board. He's obviously not a guru as far as EFI goes, but there's no reason for insults like you don't know how many brain cells he has left.

No one posting on here should be de-negrigated for their level of intellegence, I have noticed a decidedly nasty streak some people have around here If you were to walk into some folks shops with that kind of attitude,you would leave on a stretcher.
Not alot of the general public has Knowledge of Gm's rather simplistic Fi systems, Occasionally yes some of the questions make you wince or groan, but this forum is a heck of alot better than the Honda or misubishi ones, and its fun to Heckle others yes, but come on have some respect for new people, Don''t run them off from the Hobby/buisness/entertainment aspect of this You never know when you might actually run into them out in public..or at a car show, track, junkyard, snowdrift..

[Fierobuffoon]

Easy, killer. It's his first post on this board. He's obviously not a guru as far as EFI goes, but there's no reason for insults like you don't know how many brain cells he has left.

oops forgot to add I agrred with Pocket..

[2.8-350TBI]

Yes, I agree with pocket rockket. And I sincerely apologize for the insult.

I wrote that while drunk. And truly meant no offense to him.