Originally Posted by fburgtx
Originally Posted by irfubar
Originally Posted by fburgtx
Originally Posted by irfubar
Originally Posted by Jim_Conrad
231 Buick V6.
Great little engine... odd fire.. was kinda odd, but made great Jeep motors and Kenny Belle made some good horsepower from them

Was the 231 an “odd-fire”, or just the earlier 225 version??
Oh, good point, it was the 225, I believe the 231 was even fire. My dad put a 198 in a military jeep in the 1960's

After a quick read, sounds like the EARLY 231’s were odd fire, and then became “even fire” in the mid to late 70’s..
even fires held up better IMO...