Frodson Major 5000 RPM

Can anyone tell me how fast I dare spin a Major 5000 engine, going to use it for tractor pulling, engine is mostly stock stock crank and flywheel.
Thanks Mike e-mail reply would also be ok.
 
I think you'd probably blow a head gasket or throw No 2 rod thru the block before the flywheel would explode. Kind of my speculation.
 
the crank will brake, they are cast not forged steel, my major would vibrate till i slowed down the rpms. they have more power than traction in frist gear and fast idle in second gear they will spen out before they run out of power. is it really worth it to blow an engin even if you win?
 
What you really need to do is find a power curve chart and run the tractor at the rpm that the engine is most efficient. Anything over the point that RPM's, and torqe meet there will be a decrease in torque. and maximum torque is what you want at a tractor pull. Dandy Dave!
 

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