OK, I have a 72 c 50 292 ci motor.the motor just had a rod go thur the side of the block! Ouch!So I have another 292 I can put in. The motor sat idle in a truck for 20 years and I put gas in carb and started right up after all those years.but do I need to just stop, rebuild the motor and start fresh? I'm also wondering if the driving 55 -65 MPH is too much for the motor with the 2 speed rear end and will I just blow up the motor even if I rebuild it? Your advice is well needed. Thanks!