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Early 2.8 with Edelbrock cam, intake, and headers... how ditch ECU? What carb?

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Old May 1, 2015 | 10:40 AM
  #1  
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Car: 83 bird
Engine: 305/383
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Early 2.8 with Edelbrock cam, intake, and headers... how ditch ECU? What carb?

First, please stick to the question!

I don't want to swap in a newer 60^ and I already plan on a V8 swap down the road so no need to sway me on that either!

Motor was recently rebuilt and purrs. Curious to see what I can do with it before I pull it.


Background:

Have a bone stock 1983 2.8 with the carburetor of course.

Picking up one of the Edelbrock Torker II intakes (3785 base, 3789 top).

Installing the Edelbrock Performer-Plus Cam & Lifter Kit (3790).

Pairing with the Pacesetter header & y-pipe setup.

Looking into FWD aluminum heads... different thread though.

What I need to know:

With those parts installed, what's left till I am ECU-free?

What can I do about ignition, isn't that computer controlled on this motor?

And what 4bbl carb is a good match for this setup?

I know there are still old school V6 guys on the forum! Dust off that keyboard!

http://www.summitracing.com/parts/edl-3790
http://www.summitracing.com/parts/edl-3789
http://www.summitracing.com/parts/edl-3785

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Last edited by aaron7; May 1, 2015 at 10:46 AM.
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Old May 1, 2015 | 06:41 PM
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Early 2.8 with Edelbrock cam, intake, and headers... how ditch ECU? What carb?

i will need a holley 390cfm 4 bbl carb and a vacum advance distributor,

forget the edelbrock cam its overpriced and barley better then stock, call up delta and get the 260 or 272 grind if u have a manual

the aluminum heads will not work with the edelbrock intake.

heres what i would do if u go with the edelbrock intake
port the iron heads , use the 260/272 delta cam , get the mechanical secondary holley 390 cfm carb and build an ultra budget turbo setup with either the cheap ebay 100$ t3/t4 hybrid , or the slightly more gt35 ,

once u have the carb/intake etc cost will be very minimal ( much less then an efi engine) to add the turbo to

if u or a friend can weld ur looking at about 300-400 to turbo it and pick up another 100hp
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Old May 1, 2015 | 07:27 PM
  #3  
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From: NWOhioToledoArea
Car: 86-FireBird
Engine: -MPFI
Transmission: T5
Axle/Gears: 3:42
Re: Early 2.8 with Edelbrock cam, intake, and headers... how ditch ECU? What carb?

Get a dizzy for a Canda s10-s15 they were just carb much longer then the US.
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Old May 1, 2015 | 07:45 PM
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Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Re: Early 2.8 with Edelbrock cam, intake, and headers... how ditch ECU? What carb?

I love threads like this... ZERO direction and jumbled thoughts, and usually zero outcome in the end.

If you're already planning on a V8 swap, forget working on the V6, just do the V8 swap. Any time/money spent on the V6 will only delay the V8 swap.

AFAIK, your car is already carburetted with no ECM, unless it's a cali-emissions equipped version.

S-10s in Canada and the US changed from carb to EFI in the same year, 1986.
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Old May 1, 2015 | 08:06 PM
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Early 2.8 with Edelbrock cam, intake, and headers... how ditch ECU? What carb?

Originally Posted by Six_Shooter
I love threads like this... ZERO direction and jumbled thoughts, and usually zero outcome in the end.

If you're already planning on a V8 swap, forget working on the V6, just do the V8 swap. Any time/money spent on the V6 will only delay the V8 swap.

AFAIK, your car is already carburetted with no ECM, unless it's a cali-emissions equipped version.

S-10s in Canada and the US changed from carb to EFI in the same year, 1986.
carb is still electronic on that thing though isnt it six
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Old May 1, 2015 | 09:01 PM
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Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Re: Early 2.8 with Edelbrock cam, intake, and headers... how ditch ECU? What carb?

Originally Posted by project89
carb is still electronic on that thing though isnt it six
I believe they are only Feedback if they are Cali-emissions. S-10 for sure is that way, if that's what you're asking about.
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Old May 1, 2015 | 09:51 PM
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project89's Avatar
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From: Utah
Car: 89 RS 89 iroc 87 firebird
Engine: 3.1 Turbo/ 355 twin turbo
Transmission: a4 w/ 4500 stall/ a4 / t5
Axle/Gears: strange s60 /w 3:42's
Re: Early 2.8 with Edelbrock cam, intake, and headers... how ditch ECU? What carb?

Originally Posted by Six_Shooter
I believe they are only Feedback if they are Cali-emissions. S-10 for sure is that way, if that's what you're asking about.
ive only ever worked on one carbed 2.8 in an fbody and i remember it as having a few conectors/sensors on the carb itself, i wanna say idle?? mixture control and something else was done by the ecm. its been a long time since ive had a carbed 2.8 infront of me
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Old May 2, 2015 | 08:47 AM
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Car: '86 Camaro, '94 Camaro, 3 others
Engine: LG4 ->L29, L32->LR4, L36, LG4, L31
Transmission: 700R-4, T5WC, 4L80E, SM465, 4L60E
Axle/Gears: 3.42, 3.23, WTB/WTT 2.93
Re: Early 2.8 with Edelbrock cam, intake, and headers... how ditch ECU? What carb?

Weren't all the pre-'84 2.8s notorious for breaking crankshafts? Something about oiling issues?
AFAIK, all carbureted 2.8s in the U.S. came with computer controlled 2-barrel carbs. I never saw one that wasn't, except one swapped Holley 2V on a poorly fabbed adapter. But it did run ok.
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Old May 2, 2015 | 09:22 AM
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Car: 1973 Datsun 240Z/ 1985 S-15 Jimmy
Engine: Turbo LX9/To be decided
Transmission: 5-speed/T-5
Axle/Gears: R200 3.90/7.5" 3.73
Re: Early 2.8 with Edelbrock cam, intake, and headers... how ditch ECU? What carb?

Originally Posted by cosmick
Weren't all the pre-'84 2.8s notorious for breaking crankshafts? Something about oiling issues?
AFAIK, all carbureted 2.8s in the U.S. came with computer controlled 2-barrel carbs. I never saw one that wasn't, except one swapped Holley 2V on a poorly fabbed adapter. But it did run ok.
Yes, the pre-1985.5 2.8 were small journal.

That would be interesting if all US cars were feedback carb. Canadian cars definitely were not all this way. I have seen a couple, but most of the ones I saw were non-feedback type.
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Old Aug 6, 2016 | 08:31 AM
  #10  
aaron7's Avatar
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From: MA, USA
Car: 83 bird
Engine: 305/383
Transmission: WC T5
Axle/Gears: 3:42
Re: Early 2.8 with Edelbrock cam, intake, and headers... how ditch ECU? What carb?

Bumping this. Yes, all US cars had the e2se carb; computer controlled.

All you need is the S10 distributor.

Finally getting around to this build. Think I'm skipping the cam, but will still install the Eddy intake & a 4bbl as I found them on the cheap. Headers would be nice, but unless I find them used I won't bother.

Reason for toying with the V6 is 1) I already have it 2) The 383 isn't done yet, taking my time as it's a budget build 3) This motor's been rebuilt and it runs great!

If I was picking up a catalog and ordering these parts... yeah, that wouldn't make any sense.

Should have progress pics in a few weeks. Can't wait to clean up that engine bay!



Last edited by aaron7; Aug 6, 2016 at 08:34 AM.
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