Virg464
Well-Known Member
Whats your break in process?
Last motor I had to break in was a 350 for the (1989) 1-ton chevy van (family hauler), think I ran it at 2000 RPM for 20 min and that was it. Never did this for a motor with this much money in it (relative term), one set up for this level of performance (another relative term), and one that I really want to get right. I've always heard once it's up and running, timing is dialed in, and gauges in the green, then 2000 RPM for a certain amount of time? I've also heard that the RPM's need to vary, but never heard if that's after the 2K run in? This may be a wide open kind of question, but for a mid level performance engine, just want to get it right the first time.
Motor: 400 +.030 (405), 10.5 CP, comp cam xr292hr-10 (hyd roller), RPM Performer heads, DP4B intake
Last motor I had to break in was a 350 for the (1989) 1-ton chevy van (family hauler), think I ran it at 2000 RPM for 20 min and that was it. Never did this for a motor with this much money in it (relative term), one set up for this level of performance (another relative term), and one that I really want to get right. I've always heard once it's up and running, timing is dialed in, and gauges in the green, then 2000 RPM for a certain amount of time? I've also heard that the RPM's need to vary, but never heard if that's after the 2K run in? This may be a wide open kind of question, but for a mid level performance engine, just want to get it right the first time.
Motor: 400 +.030 (405), 10.5 CP, comp cam xr292hr-10 (hyd roller), RPM Performer heads, DP4B intake