ls7 bent rod
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On The Tree
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ls7 bent rod Hey guys, I've found a used ls7 long block that has a bent rod. The picture of the rod is attached. The piston skirt looks fine and so does everything else. Just wanted to get your opinion before buying the motor. The guy bought it already like this and doesn't know how it happened or what cylinder it was from. The block has not been magnafluxed. This would be going into my 67 camaro and I'm just trying to make sure I'm not spending 2800 on a paper weight. Thanks
Hey guys, I've found a used ls7 long block that has a bent rod. The picture of the rod is attached. The piston skirt looks fine and so does everything else. Just wanted to get your opinion before buying the motor. The guy bought it already like this and doesn't know how it happened or what cylinder it was from. The block has not been magnafluxed. This would be going into my 67 camaro and I'm just trying to make sure I'm not spending 2800 on a paper weight. Thanks
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Joined: May 2008
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Rods don't typically bend for no reason - make sure you take a good look at the block and heads to make sure nothing is cracked.
If the liner is cracked, it can always be sleeved - you would end up with a better product then anyway.
If the liner is cracked, it can always be sleeved - you would end up with a better product then anyway.
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Thanks guys, I really like the possibilities of the motor, just scared of buying something that has a problem that can't be seen. It is the LS7 block, rods, pistons, heads, and block for 2800 obo. Supposedly the pistons, heads, block, and all but one rod is in good condition and the none of the piston skirts have a scratch. I havn't driven to look at the motor yet, just spoke with the guy and looked at the pictures he sent me. I guess nitrous would be the cause of the bent connecting rod.
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I hydrolocked a 5.3 liter about 6 years ago. Ended up blowing a hole out the side of the block about the size of a baseball. I guess I would just feel a little better about the motor if I knew why it bent the rod.
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I agree with you on the hydro lock but not on passing on the block because of hydrolock. From the rods that i have seen bent or broken from hydro lock the rod in the OP pic to me looks like it may have been hydrolocked when attempting to start the motor = block is still good. typically when you hyrolock with any real rpm's you blow **** up. your rod looks like it could have been hyrolocked form leaking injector and was bent with cranking the starter. MY 2 cents
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Hey guys,
Just saw the guy repost the ad on craigslist. I never made it down to look at everything with family coming from out of town. The first time I talked to him everything was fine. Block was great, crank was great, everything was good except for the bent rod. Hence the reason for my post. In the new pics, you can see the #7 cylinder cracked on the inner and outer liner. Things that make you go grrrrrrr....
Just saw the guy repost the ad on craigslist. I never made it down to look at everything with family coming from out of town. The first time I talked to him everything was fine. Block was great, crank was great, everything was good except for the bent rod. Hence the reason for my post. In the new pics, you can see the #7 cylinder cracked on the inner and outer liner. Things that make you go grrrrrrr....
Hey guys,
Just saw the guy repost the ad on craigslist. I never made it down to look at everything with family coming from out of town. The first time I talked to him everything was fine. Block was great, crank was great, everything was good except for the bent rod. Hence the reason for my post. In the new pics, you can see the #7 cylinder cracked on the inner and outer liner. Things that make you go grrrrrrr....
Just saw the guy repost the ad on craigslist. I never made it down to look at everything with family coming from out of town. The first time I talked to him everything was fine. Block was great, crank was great, everything was good except for the bent rod. Hence the reason for my post. In the new pics, you can see the #7 cylinder cracked on the inner and outer liner. Things that make you go grrrrrrr....
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On The Tree
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I love the Monte Carlos. I grew up helping my dad build a 86 Monte Carlo SS. This was back in the day when putting efi on small blocks was just becoming popular and there was very little information or parts available.
I had a set of the LS3 Powder Metal rods bend up. L76 6.0 with a Cogged 1900 and a cam that was road raced. After 100,000 miles 60,000+ with the blower, the lift cycle on the rods just hit their limit. Bent/compressed all the rods to some degree, nothing broke. If one was bent, I would be inspecting all of them plus the rest of the motor. On this motor, only one road was bent bad enough to cause a ring seal issue, #8. The rest of the road were not bent enough to un-seat the rings so initially it appeared as only one rod was bad. After inspection, they all were distorted to some degree with 3 that were visibly bad.
Basically, look at putting rods/pistons in at minimum if not a complete rotating assembly.
Basically, look at putting rods/pistons in at minimum if not a complete rotating assembly.
