talking in inches

[Squirrel Nuts]

v6's - I know the 3.4 has 160hp@4600rpm and 200lb/ft@3600rpm. I also know the 3.8 has 200hp@5200rpm and 225lb/ft@4000rpm. I know the 3.4L's bore/stroke is 3.62/3.31 and the 3.8L's 3.8/3.4. They both have sequential port fueal injection, and the 3.4L is a 60º engine and the 3.8L is a 90º engine. BUT how many cubic inches are each of them???

[Philo]

You can easily compute cubic inches from liters. For instance on the 3.8 (3800cc), just divide the 3800 by 16.5, giving you 230.30 cu in. I think that engine is 231 cu. in., so you will be really close. The 3400cc engine would be 206 cu. in.

[Squirrel Nuts]

Thanks for the great info but I'm curious where did you get the 16.5 number from? O yea and are those hp and torque #'s at the crank or the wheels??

[Philo]

Originally Posted by Squirrel Nuts

Thanks for the great info but I'm curious where did you get the 16.5 number from? O yea and are those hp and torque #'s at the crank or the wheels??

I have used it for many years, but I think it is because there are approximately 16.5cc to a cu. in. Crank or Wheel horsepower would depend on how the reading was taken. I think GM rates their engines at the crank.