I'm not entirley clear what the options are for making the bottom end stronger. The TVR crank has a habit of snapping anyway. I assume you would have to look at an alternative supplier of cranks.georgiex wrote:I'd probably need a bottom end upgrade for the 5litre to be reliable
Have a thumb through the major [tvr] mods section over at PH:
http://www.pistonheads.com/gassing/forum.asp?h=0&f=155
For some ideas of what others have done.