231 V6 Swap to 260 V8

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1980 Jay

n00b
Nov 1, 2016
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Are these two fully compatible, and do I have to change any wiring. 1980 cutlass supreme coupe.
 

565bbchevy

Geezer
Aug 8, 2011
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The Buick 231 and the Oldsmobile 260 are not a direct swap and you can't use anything off the V6 for the V8.
If I were going to trouble of swapping a V8 in place of V6 I would look for at least a 350 so you actually are adding power.
 

1980 Jay

n00b
Nov 1, 2016
4
0
1
The Buick 231 and the Oldsmobile 260 are not a direct swap and you can't use anything off the V6 for the V8.
If I were going to trouble of swapping a V8 in place of V6 I would look for at least a 350 so you actually are adding power.
Its coming from a 79 cutlass supreme
 

565bbchevy

Geezer
Aug 8, 2011
9,590
12,611
113
Michigan

565bbchevy

Geezer
Aug 8, 2011
9,590
12,611
113
Michigan
If you can get everything off a donor car it would make the swap easier but the 260 was designed as a reliable economy engine and that is all it is really good for, if you are looking for a big power increase go with something bigger.
 

1980 Jay

n00b
Nov 1, 2016
4
0
1
Yea it seems like a lot of work...Too much work. He said it would be an exact match. I really need a transmission and thought about just taking the engine and transmission to make it easier. Are 231 V6 th350?
 

565bbchevy

Geezer
Aug 8, 2011
9,590
12,611
113
Michigan
You would want to verify what it is.


transmission-chart.jpg
 
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