[johnsjmc]

I used to be a Dellorto dealer. Sold lots of triples for the Z cars. last time I built one was in about 81 so perhaps things have changed a bit. I used to use a 280 block and crank, longer l16 rods and a flat top piston. Along with an early e31? head with big valves. compression was around 10:1 static. Racer brown cam (numbers escape my ageing head). Factory competition dept header and dual 2 inch exhaust.(or 2 1/2 exh with Corvair turbo muffler.3 x2 40 mm carbs
I estimated hp around 230. With a 5 speed from a 280 and a 4.38 final drive it ran high 14,s in the 1/4 suggesting 230 hp also.
I,ve not been involved with the Z car since mid 80s but I have a good friend who still has his 73 which had one of my engines in it. He is the past pres of the Z car club in Toronto. I,ll have to ask him whats happening re hp next time I see him.