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post #1 of (permalink) Old 11-25-2006, 09:15 PM
Don B.
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2.8 swap

Ok newby question and I did a search first. I just purchased an '85 S10 4x4 ext. very clean but the 2.8 motors blown. I found an excellant running 2.8 in an '86 but it's fuel injected and mine is carbed. My main question is do all the 2.8's have the spot for the mechanical fuel pump? I'm planning putting the carbed intake and carb on and using my accessary's.

Thanks for your help,
Don..
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post #2 of (permalink) Old 11-26-2006, 04:33 PM
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Re: 2.8 swap

they should, but check. the question you really need to know is does the new motor's cam have a lobe for the fuel pump. that i'm not so sure about. i'd guess no, being fuel injected.
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post #3 of (permalink) Old 11-26-2006, 08:38 PM
Don B.
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Re: 2.8 swap

Didn't think about the lobe, Was kinda hoping that since the fuel injected was the first year in the Blazer the block and components would be the same but another site mentioned the hole for the fuel pump was not drilled in the fuel injected block.
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post #4 of (permalink) Old 11-26-2006, 09:32 PM
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Re: 2.8 swap

um... i don't know. i have a 3.4 sitting in my shop, but i can't remember if it had the hole or not. it came from a 98? camaro? i know your standard 5.7 block had a hole and all for a fuel pump, but there is no lobe on the cam.

fyi-3.4 is basically the same thing as a 2.8 and mostly dirt cheep out of a camaro. if you are doing the swap, why not add some displacement. only major difference is the flywheel. you can't use a 2.8 flywheel with a 3.4. This is an issue with say a jeep swap. (some jeeps used 2.8). but with a chevy, it is all bolt in.
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post #5 of (permalink) Old 11-27-2006, 06:19 PM
 
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Re: 2.8 swap

<font face="COmic Sans MS">You could always run an electric fuel pump, with a regulator to drop the pressure down to what the carbuerator needs to see. I'm not entirely sure what the pressure is, although I suspect a Haynes manual or the factory service manual might have that answer.</font>
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post #6 of (permalink) Old 11-27-2006, 06:26 PM
Don B.
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Re: 2.8 swap

Yea, I figured i'd just have to add an elctric pump, thanks...
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