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bbc open header break in?



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Old 01-10-2010, 07:29 PM   #1
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bbc open header break in?

ok my last part comes in tuesday and it will be safe to fire it off temp. i have a x-member rigged up for now. my exhaust dont fit anymore i guess the bb headers come back further than the sb, and the exhaust shop that did my truck did kinda rough job anyways. bottom line would it be safe to run the motor for about 20 min on open headers just to get everything tuned and seated or would that be long enough to damage my rings? just wondering thanks guys.
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Old 01-10-2010, 07:55 PM   #2
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wont hurt it
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Old 01-10-2010, 07:56 PM   #3
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If they are full length headers..Yes(safe). If they are shorty headers you will need a 'pigtail' off of them to be on the safe side(maybe a foot or so of exaust pipe)...It is not your rings but the exaust seats in the heads that will be damaged. Is this a fresh motor? what are the specs?
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Be careful once you get MUD fever it costs thousands to get rid of it!! LOL
"I got a fever, and the only prescription is more cowbell!"
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Old 01-10-2010, 07:58 PM   #4
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if its long tube headers it will be fine. it will be hard to tune b/c you wont be able to hear much. you tune will be off when you hook up the exhaust. but since you are just wanting to fire it up and not be driving it, no harm will be done.
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Old 01-10-2010, 08:07 PM   #5
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SWEET SWEET thats what i wanted to hear. ya i wont be driving it, i still gotta install d-sfafts, and few things here and there.
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Old 01-10-2010, 08:08 PM   #6
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oh ya they are long tubes!
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Old 01-10-2010, 08:45 PM   #7
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make sure you break the cam in.
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Old 01-10-2010, 08:54 PM   #8
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I've broken in several engines with only manifolds.

I prefer to do it with mufflers though, for one reason: noise.

With open headers you can't hear abnormal ticks or knocks. The only clue you have whats going on inside your engine is from sounds.
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Old 01-10-2010, 09:32 PM   #9
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good deal, im gonna run it 2k for 15 then maybe 2500 for 10 depends what time i get off work and how late it is.
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Old 01-10-2010, 11:27 PM   #10
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Go to your cam's web site for break in times an be sure you use a oil that is not stripped of the things that allow a cam to break in properly. Use a deisel oil like rotela or dela..trust me on this...that is why I asked for your engine specs.(roller or not)
Sit an watch the gauges, oil pressure and temp will tell you all you need to know about what is going on. and get the recommended specs on break in...VERY important on a BBC..they like to flatten cams. GL and let us know how it turns out.Have someone to watch for leaks an you maintain engine speed,time, and watch guages.
Nothing sweeter than breaking in that new motor
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Quote:
Originally Posted by Elcaminoman View Post
Be careful once you get MUD fever it costs thousands to get rid of it!! LOL
"I got a fever, and the only prescription is more cowbell!"
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Old 01-11-2010, 06:05 PM   #11
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oh hell sorry man i didnt finish reading your post the other day. yes its a fresh motor its a crate td427 solid roller setup, its a howards cam i believe 570 lift give or take, open chamber heads and flat tops. what weight of that rotella should i run? ive heard of many people using it. i cant afford rp break in oil at the moment lol
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Old 01-11-2010, 07:06 PM   #12
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If it is a roller cam any NON synthetic oil will do. I would just use a quality 30wt and prime the pump. The rotella is for flat tap. solid or hyd. cams and is needed to break them in correctly.(10-40 is fine) I have flattened a couple before and learned the hard way.
I love BBCs..I would put my 468 in my Jimmy but the 350 is already breaking stuff, so I will leave it alone, besides it is for my 69 Sht wide Chebby
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Quote:
Originally Posted by Elcaminoman View Post
Be careful once you get MUD fever it costs thousands to get rid of it!! LOL
"I got a fever, and the only prescription is more cowbell!"
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Old 01-11-2010, 07:30 PM   #13
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i have always ran sbc never really had a bbc of my own till i destroyed my last sbc stroker last year i got fed up with it having to put it through so much hell to make the power a bbc will make at any rpm or at least i am hoping it will lol
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Old 01-11-2010, 08:36 PM   #14
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No replacement for displacement..atleast not in my book.
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Quote:
Originally Posted by Elcaminoman View Post
Be careful once you get MUD fever it costs thousands to get rid of it!! LOL
"I got a fever, and the only prescription is more cowbell!"
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Old 01-13-2010, 02:55 PM   #15
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i dunno i have a 4 cylinder that'll run 200+ hahaha
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