putting a 89 tbi 350 in a 78

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clay78

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clayton
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1978
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custom deluxe
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inline 6
just wondering if, and whats needed to put a 89tbi 350 in where my inline 6 250 was? do i need the wiring harness ? is it easier to make it carburated? do i have to move or change motor mounts? and will it bolt up to my 78 4 speed MT?
 

87scotty

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probably gonna need the computer and harness
 

yevgenievich

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Need computer and harness from the donor. Would take the engine mounts from the donor as well. Not sure on the transmission. Short term would be easier to put a carb on it, but it depends on what you are looking for in the swap.
 

clay78

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1978
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custom deluxe
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inline 6
Need computer and harness from the donor. Would take the engine mounts from the donor as well. Not sure on the transmission. Short term would be easier to put a carb on it, but it depends on what you are looking for in the swap.

can i put a carb on the engine and use the old harness? thats what i would rather do. or i can get a 84 block and heads with an intake and carb. then could i take the front end pullys and water pump exc.. and put them on the old engine? thanks
 

yevgenievich

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Mostly old harness would work with a carb swap on tbi motor. Alternator, oil pressure and water temp connectors likely to be different. Swaping front accessories to older block would be fine as well.
 

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