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11-18-2006, 06:54 PM #1
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- Aug 2005
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Black- 2000 Camaro Z28
How hard is it to spin a main bearing?
I know a kid who spun the main bearing in his lt1 like 5 years ago, and was was wondering how hard it is to do, and how how can you tell if you have?
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11-18-2006, 06:56 PM #2
do a burnout at redline for 1 minute, that'll do it, i think as long as you keep your oil changed, run premium fuel , keep up on the basic maintenance and it'll be really hard to do
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11-19-2006, 05:14 AM #3
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- Nov 2006
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- Earth
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- 215
Using heavy oil to boost pressure can starve the bearing surfaces under high load conditions, especially in an engine that has not been fully warmed. Using the proper weight oil and a synthetic if the engine is pretty leak free makes for good insurance. The LT1 has had a reputation for this but not to the extent of considering it common.
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11-19-2006, 10:35 AM #4
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Black- 2000 Camaro Z28
so if I do a donut and bounce it off the limiter a little it wont cause any permanent damage?
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11-19-2006, 10:58 AM #5
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- Nov 2006
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- Cowboy Country Stillwater, OK
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- 39
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- 264
Bright Rally Red- 1996 Camaro SS
just dont get into a habit of it, limiters are there for that reason
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11-19-2006, 11:13 AM #6
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11-22-2006, 10:10 AM #7
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- Nov 1999
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- over here...
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[]D [] []V[] []D- 1999 trans am
floor it at like 500 rpm going up a hill and change gears keeping the rpms really low...
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11-22-2006, 10:48 AM #8
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- Aug 2005
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Black- 2000 Camaro Z28
ok thanks for the info guys, and i'll lay off the rear end for a while
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11-22-2006, 04:59 PM #9
I did that in a '79 malibu w/ a 327 I used to have. I was in the pits at IRP between rounds, and my engine started squealing like a belt slipping. Before we could figure out what it was, it quit. Long story short, My next pass a main bearing seized, and broke the crank. I was just about to hit 2nd gear @ 7800rpm when it snapped. Needless to say once I got it stopped I looked back , and saw most of the shortblock internals laying on the track...
By the way, I had just put straight 50 weight Valvoline in it that morning, because I noticed my oil pressure wasn't as high as it used to be....
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11-22-2006, 07:46 PM #10
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11-24-2006, 10:07 PM #11
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- Oct 2005
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- Tupelo MS 38802
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- 7
Black- 1996 Trans Am
I don't know how hard it is to do but I did last Saturday. I ran up to 132 mph in drive and shifted to O/D and I noticed that the oil pressure dropped from the normal 40-45 lbs it held most of time to about 12 lbs. I have 118000 on mine and I changed the oil and filter every 3000 miles and I ran full syn. Like the guys said prior to me stay away from the donuts it does kill the rear. As for the rev. limter it is there for reason normal small blocks are good for 6000 rpm but after that they are crying.
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11-25-2006, 07:57 AM #12
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11-27-2006, 07:25 AM #13
- Join Date
- Nov 2006
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- In A Jesus Christ pose.... on the banks of the Thames with Ratty and Mole.
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- 208
hunter Green- 92 Camaro RS 350 Special
doesnt nascar use small blocks? yet those bitches rev to 10k
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11-27-2006, 08:07 AM #14
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11-27-2006, 08:38 AM #15
crying and screaming after 6,000? I revved my 4.6 2V to 7,000, and I rev my stock shortblock LS1 to 7,000.....
-Will
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11-27-2006, 09:30 AM #16
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11-27-2006, 10:59 AM #17
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11-27-2006, 11:19 AM #18
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- Dec 2005
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- Research Triangle Park, NC
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Pewter- '99 Z28 M6
Who told you that slim shady?
I rev mine to 6600 ALL the time.
I heard the weak point was the rod bolts and they are "supposedly" needed for a lot of 7K use.
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11-27-2006, 11:31 AM #19
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11-27-2006, 11:41 AM #20
- Join Date
- Dec 2005
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Pewter- '99 Z28 M6
That is what I call turnin' and burnin'. I remember back when you had to dump a LOT of money in a 350 to get it to turn 7K reliably. The LS1 changed everything.
Last edited by Roastem; 11-27-2006 at 11:41 AM. Reason: me none too smart
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