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damaged block???????/HELP

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Old 08-02-2008, 01:55 PM   #1
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Default damaged block???????/HELP

i just got a LS7 and i noticed a chip in the block. i am worried about it. im not sure if the damage will affect the performance of the motor.

the damage is a chip in the groove where you would bolt up crank. i have a pic of a normal one and the damaged one. i just wanna know if the block is gonna be useless or if i will have problems in the future thanks alot.

the first one i think is the good one as you can tell. thanks for the help
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damaged block???????/HELP-ls7-001.jpg   damaged block???????/HELP-ls7-004.jpg   damaged block???????/HELP-ls7-003.jpg  
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Old 08-02-2008, 02:15 PM   #2
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IMHO, build it and run hell out of it.
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Old 08-02-2008, 02:26 PM   #3
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thtas what i said , but my dad told me to ask around. if the poeple say its runable but still a littl messed up. but the seller never told me about damage thast why i was wondering
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Old 08-02-2008, 02:27 PM   #4
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get some of my dam money back. and i payed for shipping i get to fedex and i had to pay again cuz he didnt pay i was pissed
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Old 08-02-2008, 02:32 PM   #5
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I'd have been pissed, too!!!
You'll still have plenty of clamping area and that small missing piece shouldn't affect bearing crush.
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Old 08-02-2008, 02:42 PM   #6
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yeh ill prob take it to get look at or something, he said the block had 1100 miles on it, but there is alot of wear on a few of the walls. i dont know maybe he jammed me
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Old 08-02-2008, 06:08 PM   #7
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no body else come one guys
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Old 08-02-2008, 09:03 PM   #8
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Where did you buy the block?

It looks like that is the main with the thrust bearing. If so the bearing wraps around for the trust area as well as the main bearing. After you install the bearing you won't see it. Also the bearing has a lot of support so it should not be a problem Normally you want as much bearing contact with the main saddle to dissapate heat. Since this appears to be the thrust there is a lot of contact with that bearing.

If it's going to keep you awake at night with worry then get it exchanged. It's not worth the agony. Me, I would run it.

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Old 08-03-2008, 09:06 AM   #9
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i dont even know if i over payed for the block.

i payed 1500 for that block. its not worrying me all that much and i just wanted to make sure i was gonna have problems in a few thousnad miles. thanks for impuut
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Old 08-03-2008, 01:13 PM   #10
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It'll be fine, just make sure that it doesn't have any sharp edges that could effect thrust or start a crack.
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Old 08-03-2008, 08:10 PM   #11
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ok ill make sure to file anything down a little. thansk alot for the help
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Old 08-03-2008, 11:25 PM   #12
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Your not just gonna slap some bearings in it and go are you??? Send it to the machine shop, have the mains align honed along with the cylinder and cam journal clean up.

Dont EVER take ANYONES word that somethings been done right. Also, let the machine shop take care of the nick. the last thing you need to do is get in there on the mains and start filing away.

1500 bucks was a great price. Provided everything else checks out, your all good..
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ok ill make sure to file anything down a little. thansk alot for the help
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Old 08-04-2008, 06:25 AM   #13
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^^^^What he said. Take it to a GOOD machine shop. Check and correct the align bore first. On the cylinder ware, have him see how much needs to be honed from the cylinders to clean them up. Standard machine shop pratices should get you going. That's a very good buy. Congrats.

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Old 08-04-2008, 11:24 AM   #14
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i just got home form a local shop. the recently built a 730hp LS7 427 on pump gas. it was a bad *** setup i must admit. he reccomended the same thing as the last two guys who posted. thanks for all the help guys. cant wait to get this thing going
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Old 08-04-2008, 05:56 PM   #15
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That'll be 300 dollars please...
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Old 08-05-2008, 11:06 AM   #16
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checks in the mail!!!!!
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Old 08-05-2008, 12:05 PM   #17
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That's the factory tang notch found on LS7 blocks. It's not a defect.

LSX blocks are the same way.
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Old 08-15-2008, 10:26 AM   #18
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Quote:
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That's the factory tang notch found on LS7 blocks. It's not a defect.

LSX blocks are the same way.
Exactly.

......and it's damn funny how the "EXPERT" told you to you to "Send it to the machine shop, have the mains align honed along with the cylinder and cam journal clean up"
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Old 08-15-2008, 10:26 AM
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