[DeTomaso] NPC: Blown motor

[JDeRyke at aol.com]

Tractor-pull engines are "different".... instead of 15psi (1 bar) 
supercharger pressure, some of the unlimiteds run over 120psi (8-1/2 bars). Some run 
one blower feeding a second, and some use nitro on top of the blowers. They 
have to increase intake valve spring pressures not for high revs but due to 
intake pressure blowing the valves open.   Looks like that block split 
horizontally. Glad no one was hurt- lots of flying metal! FWIW- J Deryke