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Doing a engine swap from a 231 V6 Buick Engine to a 350 V8 Pontiac engine

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Old April 22nd, 2023, 04:59 PM
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Doing a engine swap from a 231 V6 Buick Engine to a 350 V8 Pontiac engine

Found a 350 Pontiac engine with a Buick TH350. I need advice on everything that I will need for this engine swap from a V6 231! Is this a direct fit or will I have to majorly modify anything?? Thanks homies 🙏🏾💯

P.S: this is my first ever engine swap too as well
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Old April 22nd, 2023, 05:13 PM
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Do you know the make, model and year of the car your working on? Kind of important information to give before anyone can gives you advice.
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Old April 22nd, 2023, 05:58 PM
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Nothing insurmountable.. the poncho will not bolt to the 231 frame pads. You'll need to source/fab mounts. Once that is done you'll have some wiring to take care of and normal swap stuff.

FYI a Buick 350 is a direct swap. They are pretty cheap and easy to find in the Buick world.
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Old April 22nd, 2023, 07:06 PM
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Originally Posted by 66_Jetstar
Nothing insurmountable.. the poncho will not bolt to the 231 frame pads. You'll need to source/fab mounts. Once that is done you'll have some wiring to take care of and normal swap stuff.

FYI a Buick 350 is a direct swap. They are pretty cheap and easy to find in the Buick world.
How did you find out what car he's working on?
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Old April 22nd, 2023, 10:00 PM
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Originally Posted by Bfg
Do you know the make, model and year of the car your working on? Kind of important information to give before anyone can gives you advice.
I have 1985 Cutlass Supreme
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Old April 22nd, 2023, 10:04 PM
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Originally Posted by 66_Jetstar
Nothing insurmountable.. the poncho will not bolt to the 231 frame pads. You'll need to source/fab mounts. Once that is done you'll have some wiring to take care of and normal swap stuff.

FYI a Buick 350 is a direct swap. They are pretty cheap and easy to find in the Buick world.
I was trying to find a Buick 350 but no luck. Found a few 350 SBCs tho I was kinda leaning towards that but I looked at all of the modifying you may have to do
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Old April 23rd, 2023, 04:23 AM
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Why not go with a 350 Olds motor?
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Old April 23rd, 2023, 07:09 AM
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Originally Posted by Bfg
Why not go with a 350 Olds motor?
I couldn’t find one
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Old April 23rd, 2023, 10:02 AM
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Originally Posted by DJKillaC94
I couldn’t find one
My guess is it will be easier to find an Olds 350 than it will be to swap in a Pontiac.
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Old April 23rd, 2023, 04:15 PM
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Yeah, the Buick 350 is a near direct swap. What year Pontiac 350? I believe the early motors won't work on the 301 mounts, which work best in a G body. I hate seeing sbc/ls in everything, a Pontiac V8 is at least something different.
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