Hi All;

I hope that this is a Bench Racing topic. I have been doing a little bit of preliminary research on high power & high torque potential naturally aspirated inline six cylinder engines, and have come up with the following:

* TVR Speed Six https://en.wikipedia.org/wiki/TVR_Speed_Six_engine
* GM Vortec 4200 https://en.wikipedia.org/wiki/General_Motors_Atlas_engine
* BMW 3.5l M88 https://en.wikipedia.org/wiki/BMW_M88
* Ford Barra 4l https://en.wikipedia.org/wiki/Ford_Barra_engine

My selection basis is that the engine has dohc, 4 valves per cylinder, and is capable of producing in excess of 400hp and 300ft-lbs (naturally aspirated) with modifications.

For those of us in USA, the GM 4200 would seem to be the obvious choice for a sports car application. Did I miss any engines that would fit in this group?

Last edited by Nigel; 04/14/16 12:49 AM.
Nigel