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Quote from: enaberif on February 06, 2015, 12:52:38 PMQuote from: Da67goatman on February 06, 2015, 12:38:56 PMThe procedure I follow is to fire it up and let it idle up to temp. Then my cam break in was a slow steady sweep from 1500rpm to 3000rpm and back for 30 mins. Then I drained the oil and was ready to go.Engine should NEVER EVER idle during new break in with a hydraulic cam. The cam gets oiled by the crankshaft hence the start it and get it up to 2000+ as quick as humanly possible.i thought the cam was under oil pressure? Wow. Looks like i got to do more reading.
Quote from: Da67goatman on February 06, 2015, 12:38:56 PMThe procedure I follow is to fire it up and let it idle up to temp. Then my cam break in was a slow steady sweep from 1500rpm to 3000rpm and back for 30 mins. Then I drained the oil and was ready to go.Engine should NEVER EVER idle during new break in with a hydraulic cam. The cam gets oiled by the crankshaft hence the start it and get it up to 2000+ as quick as humanly possible.
The procedure I follow is to fire it up and let it idle up to temp. Then my cam break in was a slow steady sweep from 1500rpm to 3000rpm and back for 30 mins. Then I drained the oil and was ready to go.
Not controversial to me. That sounds exactly right, and agrees with the GM published procedure.
Quote from: rich weyand on February 08, 2015, 06:47:36 PMNot controversial to me. That sounds exactly right, and agrees with the GM published procedure.Man, I learn something new every time I log on to this site. Where can I find that procedure? Most car makers I've seen advise you to baby it, don't rev too high or drive at a steady speed for the first 500 miles or so. I was highly skeptical of the Motoman procedure when I first heard of it, but it's how I do it now. I heard a rumor years ago that GM would start up new engines fresh off the line and run them wide open to break them in. Not sure if there's any truth to that, but it's interesting.
OK it's been a long time coming for that I am in the final steps of rebuild my sbc 355 with vortec heads. My question is about breaking in the new motor. Everything is brand new inside except for crank and rods but they were reconditioned. I want to use rotella t or delo 400 15w40 with either the lucas zinc additive or the hyper lube additive. Or do you guys recommend break in oil. If I go that route I would purchase comp cam break in cause my cam Is a flat tappet. Also can some on explain to me the best break in procedure for an engine. I know I have to put plenty of assembly lube on bottom of lifter but I'm confused on the whole process after reading so many different opinions. Someone please shead some light on this subject. Thanks in advance