Somthing went on the topend!!

[BigMean]

Dam Shame Gene! You have my luck for the sounds of it!
Tare the heads off, something isn't moving freely. I had a lifter on my 383 in my ELky that didn't spin in the bore right.
How many miles you have on the old girl?

Think positive dude

Justin

[manyfire]

been driving it since 2004 i think, the guy had it freshly rebuilt and dynoed right before I bought it, has ran awesome, I really hope its not the bottom end, I dont mind tearing apart the top, I just hate pulling the motor, when I left work it didnt sound that bad, just a little gutless with a slight noise you really couldnt hear that bad in the cab over the exhaust, if the piston was cracked it would be smoking right? ill hit it with the compression test tomorrow, hopefully that will be good news, well I have been needing to change out the rear main for a while, small leak. May just yank it and do the whole shabang.

[Rusty]

that sounds a bit like my second engine, it had a spun bearing in #1 and #8, though my first engine had a piston knock sound i never figured out... i tore it apart and there was nothing wrong... I still can't explain it

[manyfire]

you guys are just full of rays of sunshine, lol, well will find out tomorrow, do the compression test then if that doesnt show anything it starts comming apart. Wish I had the cash to just order one of those nice crate drop in's, you all know the ones, 400+ hp, would have never associated it with bearings on the bottom, but thinking about could see how it could be. Its the holidays who wants to rebuild a motor, if I am going to pull it I am going to rebuild it, that is a spring thing so you can run the track afterwords.

[manyfire]

Originally Posted by Rusty

that sounds a bit like my second engine, it had a spun bearing in #1 and #8, though my first engine had a piston knock sound i never figured out... i tore it apart and there was nothing wrong... I still can't explain it

when you tore it apart did you fix it by accident?

[bigrond]

a little hard to tell but likely a spun bearing from what i could hear .power loss was probably the bearing getting a death grip on the crank and then slipping away .i guess we wont know till you pull it .good luck i hope its not a costly fix

[badtoad]

hey Many ....Dont feel bad casue i mite half to rip my big block back out . This thing is cranking like it has a dead battery , im thinking a spun bearing or i killed the starter already . So i feel you pain but atleast you got to drive the thing !

[manyfire]

I was looking, if it is a bearing I could drop the pan and replace in the truck until spring, this is thanks to having the 4wd chassis converted, getting ready to go do the compression test now, just hope for good compression!!!!!!

[Melonhead]

Let us know Gene!!

[Scotty_S-15]

With any luck, you're working on it as we speak..........
But in my opinion, I'd be more inclined to guess it's something on the top end because:
* Your original complaint of it running like crap, etc. Generally, a rod won't hurt performance..... until it's hanging outside the block!
* That "clack" sounds a little too "tinny" to be a rod. A rod knock usually sounds a little deeper. But then again, your video wasn't done in a sound studio......
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So lets hope it's in the top end..... for your sake.
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