[indy500efi]

i want to fine a different motor to put in my current one is efi and its a 580 its blown up 3 times now. so what motors will work in the sled? or would i be better off trying to fine another zr 580 efi motor?

 

[kingofkings]

If it was not in the motor itself, make sure whatever blew the motor is fixed first.

 

[indy500efi]

its on the crank has a flat spot on it