over 9000 ftlbs
65 to 70 mph stock
My 400ex is stock and it will run about 87 mph. there is no way they may go 65 but no way 87 your crazy
54 to 58mph (in stock)
The 250R is going to win
I have a modded z400 that goes 70 and i beat a 400ex(stock) by like ten lengths so probly around 60
between 27 and 29 hp
mine is basically stock and tops out at 70 mph
depends if the sprocket is bigger or smaller than a stock sprocket.
probly close to 75 miles per hour mabey even 80. Ya right my wifes trailblazer 250 will run about 50 and the honda 400ex was barely beating me, his on gps will run 60 stock
the stock 400ex has 29.3 at 6900 rpm
The stock spark plug is the NGK DPR8Z gapped at 24 to 28.
The torque rating for your stock 1968 Camaro 327 cubic inch engine is 235 pounds at 3000 RPMs. The torque rating at 3500 RPMs is 255 pounds.