2.8 FI to Carb

[Zimo]

Hello,
I'm new to the 60* V6 and this is my first post.

I will be getting an '88 2.8 out of a Camaro later this month. Is it possible to swap the EFI system with the eariler Camaro carb/intake (or Edelbrock carb intake)?

I'll be swapping this into a '95 Geo Tracker & I want to keep it simple (carb w/std distributor)

This will be the deciding factor to buy the motor or not.

Thanks

[X11_STE]

It *is* possible to convert from FI to carb. You'd need the Edelbrock intake and carb (the easy parts) and a vac. advance dizzy (hard part) from an early 80's s-10 or similiar. For your swap I'd recommend the small cap, remote coil. The next question would be, will this motor fit in a tracker?

[86euro]

I'm not sure if this is true, but I was told that a dist from an old chevy strait six will work in a 660. Plus 73-prior was small cap, remote coil.

[Zimo]

Cool - so the Edelbrock 2 piece intake will work. I looked up distributors and found 2: Mallory 27 series dual point, p/n 2769201, & 47 series Unilite, p/n 4769201. I'd like to see if the inline 6 dist will work though...A lot cheaper than the Mallory.

Will it fit? I think so. I found a w/s that sells kits for a 4.3, so a 2.8 should allow more room.
http://www.off-roadweb.com/tech/0702.../photo_03.html

I'll sell the EFI parts to offset the cost of the new intake & dist.

[Arns85GT]

I did this conversion and I am currently running it. Edlebrock Performer Plus (Torker II) and the Holley 390 converted to 4150, and a 1984 Blazer distributor. Do not expect a big power improvement by itself. Do expect metering issues with the carb because Holley did not set up the 390 cfm or the 350 cfm for such a small engine.

You will need #51 primary jet, #52 secondary, and a special modification to the accellerator pump cam to keep the engine from bogging. (You need about 1/2 shot on the squirter) Once that is sorted out it will pick up some power for you.

You'll want to do head work and exhaust work to take advantage of the larger carb cfm.

If you are like me, you like the carb better anyway, and the car becomes more friendly to tune and play with. So it can be a win for you. It also looks a whole lot better under the hood.

Good luck on it

[X11_STE]

Arn, Stepping up to a 390 is slightly over carb'ing but not as much as you make it seem. I have a Citation X-11 with the original 2.8 with 2bbl. The original 2bbl is flowed @ 350cfm so a 390 is not that great of a jump. Thanks for the info on setting up the carb, though, that will come in handy when I put the 4bbl on.

[geoffinbc]

Weber carbs seem to be the carb of chice for the 2.8L No on I have talked to has ever complained about one.

What is this 2.8L comming from? A FWD car or RWD Vehicle?

[sharkey]

I will be getting an '88 2.8 out of a Camaro

there ya go

[Zimo]

Weber carbs seem to be the carb of chice for the 2.8L No on I have talked to has ever complained about one.

What is this 2.8L comming from? A FWD car or RWD Vehicle?

It's out of a Camaro.

Do you know what p/n that Weber is. Does it go on the Edelbrock 2bbl intake?

[geoffinbc]

Sorry no I do not know the number for the kit. But I believe the carb itself is a Weber 34A

[Zimo]

I found a page for Webers

http://www.webercarburetors.com/ppw/...uide/types.htm

Looks like this would work...

http://www.webercarbsdirect.com/product_p/wk490.htm

[bruce farris]

any body like a holley 500 duce on edel 4brl split plenum set-up ( w/ adepter plt.)

[Arns85GT]

the cfm isn't the whole story

Arn, Stepping up to a 390 is slightly over carb'ing but not as much as you make it seem. I have a Citation X-11 with the original 2.8 with 2bbl. The original 2bbl is flowed @ 350cfm so a 390 is not that great of a jump. Thanks for the info on setting up the carb, though, that will come in handy when I put the 4bbl on.

You are right that the 390 is "slightly" over carb'ing, but, the smaller primary venturi make up for that. The secondary spring really needs to be pretty light.

The real issue is jetting and the accellerator pump. You can jet down to about a .47 if you want to run lean. I ended up at a #512 on primary and #52 on secondary, with the 4150 conversion secondary kit.

The Accellerator pump is a whole other story. It will normally cause the engine to bog off the line no matter how you play with it. The reason is that Holley never designed either the 2 barrel or the 4 barrel with a 173 ci engine in mind. The Accellerator pump shooters are ok but the cam and diaphram are not.

The fix for the bogging problem is this. The cam simply feeds too much gas so, you take an orange cam and drill a 3rd hole right mid way between the two stock holes. You then put in the screw through the #1 hole on the metal flange, and into the new middle hole you have just created. This will give you about 1/2 cam shot. You then have to re-adjust your accellerator pump arm so the diaphram isn't pre-loaded. This will give you a managable accellerator pump shot of about 11-12 cc.

I had the 350 cfm carb on for a while and it seemed to be pretty good. I had another problem which we all thought was the carb, (but it was actually the MSD 6A ignition module misbehaving and what a PITA) and I prematurely swapped out the 2 barrel, so I never did see just how good it would be. The 350 cfm 2 barrel on paper should be a pretty close match for the engine with the Edelbrock intake on it. The 500 will be overkill for certain.

Arn

[bruce farris]

Thanks ;; I'm going to detune the 5oo 2bl.pump & play w/ jetting & PV to begin with..I'm looking for good mids(fiero). I have 9:1 edel cam & intake 1.6:1 rockers, good oiling..will fab s.s. headers... don"t know if I should block hot air passage or just restrict to 5/16 dia for now??

[pr1mo360]

hey guys!
heres a pic of my s10 blazer with a weber carb.

it works good but not as good as the fuel injection that comes in a camaro. when my motor gives out im going to swap a 3.1 from a camaro then boost it wth twin turbo's