Originally Posted by JeepinYahoo
You are wrong. The Chevy 283 was the first factory V8 to claim 1hp per cubic inch, in the 60's you could order a 283 with 283hp. Stock ratings were in the 160hp-283hp range.
WRONG. The dodge 354 hemi was the first, a cuple years befor the 283 was around.
and that 354 was not optional, it was the standard engine, the 283 only made 283hp with the Mechanical fuel injecton option. It also cost a hell of alot to get at the time ( mid late 50's)
I'd do the 283 sence you can get it cheap. The only I6's that can be up with v8's power wise are the 29( something) chevy and 300ford.
If you wanted to be really, really out of the world differnt, you could find a 305/351 V6 from a 60's and 70's GMC/chevy pickup/big truck. They would be the ultimate offroad motor, the 351 makes over 400ftlbs at 2000(or less)iirc. They dont rev high but they make alot of torque.