i just got a newly rebuilt 72 350 rocket.. and i have some question on the break in procsess how important is it and how should i break in the engine i no ima do a oil change the first 800 miles and only use joe gibbs oil the machinest said.. but how should i drive in the brake in process and up to how many miles?

 

Just vary your speed up to 65 mph for the first 800 miles, change the oil and then you can drive it like you stole it!!