250 i6 fuel economy w/o sacrificing HP

[68gmsee]

Originally Posted by markallen

a guy my dad works with said that if you put a performance cam in a 6 cylinder the motor will not hold up bc it is not made to do things like that with...is there any truth to this

Way back in the 50's and 60's there were quite a few of them in drag and speedway circle racing. I've seen some of these sixes out run V8's in the 1/4.

These engines can hold up pretty well if built right. Check this Youtube video. Chevy 250 on a dyno.

http://www.youtube.com/watch?v=5uVNQFkIZXc