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Old 02-14-2013, 10:29 PM
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1988 pontiac grand prix efi 2.8 to carbonated

can this be done on ebay they have , Edelbrock Performer Intake Manifold Base 3785 Chevy V6 2.8L Fits Stock Heads but will that fit pontica 2.8 if it can be done how would i do the spark would chevy 2.8 distributor work for my engine
............ intake Edelbrock Performer Intake Manifold Base 3785 Chevy V6 2 8L Fits Stock Heads | eBay on ebay
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Old 02-15-2013, 07:59 AM
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carbonated

Unless you're opening a soft drink plant I wouldn't switch to "carbonated"...but if you want to switch to carburated then yes, the chevy 2.8 parts are interchangeable with the pontiac. Just remember that your computer controls things like spark, fuel, and adjusts based on sensor feedback. You'll need to eliminate the computer you currently operate
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Old 02-15-2013, 04:11 PM
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shouldn't your g/p have a 3.8 buick
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Old 02-15-2013, 08:23 PM
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l wish it was a 3.8. l cant find an hei distributor with vacuum advanced. the stock camshaft will have the gear to run distributor?
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Old 02-16-2013, 10:04 AM
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Check the scrap yard for a early to mid 80's 2.8 for intake, dist, harness, computer.(carb is feedback style, dist advance is run by computer)

Watch for S(2WD) or T(4wd)Blazers or Jimmys, carbed 2.8 was common in these.

Why are you scrapping the EFI, its the only thing that makes these motors drivable.
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Old 02-16-2013, 08:57 PM
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the efi give me fits.. mileage is that what u mean ?
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Old 02-17-2013, 12:17 AM
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2.8

I kinda agree with Fmrstrtrcr on the EFI. If you think the EFI is giving you fits just wait til you get a carb on there. Your choice of course but you may regret it.
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Old 02-17-2013, 09:36 AM
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Not just mpg, but drivability, off idle power, cold start ability.

You dont need to be a computer expert to fix an efi car, just some patience. Factory Chassis service manual is good place to start(Helms manual, not Chiltons or Haynes). Dont go swapping components until you know for sure that its bad. Just because the computer flashes a component code, doesnt mean the component is bad, usually its a loose or broken wire/connection.

Start with a good diagnosis of the condition of the motor, ie, compression test, spark plug condition, cap&rotor, clean fuel filter, no broken vacuum hoses or gasket leaks.
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