346 popped...maybe looking at a LSX now
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346 popped...maybe looking at a LSX now... with pics now!
So while i was on a job several states away, my friend was supposed to start my car once in awhile to get oil to the top and warm it up some. Driving was ok too. Well he called me up and told me it just quit, won't crank and oil was leaking.... blah blah. He was revving it good too.
So I get home, jack the car up first thing and find windows in my block!
I have a new L76/LS2 shortblock sitting on the stand. But it is 58X reluctor, front cover that needs changed with sensor, different cam sprocket, and all the other stuff associated with swapping it over to the LS1 computer. Not a big deal, but not much increase and is it any stronger than what I had?
Thinking about a LSX with a nice rotating assembly so this doesn't happen again. Maybe a 454 as I am a NA sort of guy. However my 205's and headers are too small. I have to scrap everything and start over. Probably around $15K I'd say. Is this baby worth the coin?
So I get home, jack the car up first thing and find windows in my block!
I have a new L76/LS2 shortblock sitting on the stand. But it is 58X reluctor, front cover that needs changed with sensor, different cam sprocket, and all the other stuff associated with swapping it over to the LS1 computer. Not a big deal, but not much increase and is it any stronger than what I had?
Thinking about a LSX with a nice rotating assembly so this doesn't happen again. Maybe a 454 as I am a NA sort of guy. However my 205's and headers are too small. I have to scrap everything and start over. Probably around $15K I'd say. Is this baby worth the coin?
Last edited by frito1; 04-27-2009 at 10:36 PM. Reason: If I had only proof read....
#3
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I would run your LS2 short block, cam it, use your heads and have an easy 480 rwhp. You can get a 58x to 24x reluctor converter from lingenfelter and save yourself the grief of swapping everything over! Hell you could even reuse everything from your old motor (given the cam is not damaged) on your new LS2 shortblock. Now is it a LS2 or LS3? As the LS3/L92/L76 are all 6.1L motor size and the LS2 a 6.0L.
http://www.lingenfelter.com/mm5/merc...gory_Code=C163
http://www.lingenfelter.com/mm5/merc...gory_Code=C163
#4
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If your going to spend 15k we've got a 457cid long block that should run mid 9's in a 3300 lb or lighter car Or for a little more a 460cid. We also build LSX 454's all the time for people as well for a little less than that. Off the top of my head I'd say about 12,500 for a 454 long block, little more depending on your requirements.
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I would run your LS2 short block, cam it, use your heads and have an easy 480 rwhp. You can get a 58x to 24x reluctor converter from lingenfelter and save yourself the grief of swapping everything over! Hell you could even reuse everything from your old motor (given the cam is not damaged) on your new LS2 shortblock. Now is it a LS2 or LS3? As the LS3/L92/L76 are all 6.1L motor size and the LS2 a 6.0L.
http://www.lingenfelter.com/mm5/merc...gory_Code=C163
http://www.lingenfelter.com/mm5/merc...gory_Code=C163
If your going to spend 15k we've got a 457cid long block that should run mid 9's in a 3300 lb or lighter car Or for a little more a 460cid. We also build LSX 454's all the time for people as well for a little less than that. Off the top of my head I'd say about 12,500 for a 454 long block, little more depending on your requirements.
If I didn't do the LSX454, I was kicking around the idea of FI with this 6.0 motor. It has never been ran. Pull the stock pistons/rings out, use them as paper weights and install dished pistons STD size for lower compression. It would be a stout little 6.0 will some supercharger action. Are the rods any tougher on a LS2 than the LS1?
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#8
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Run that baby! Sorry, I mean't 6.2L not 6.1L haha. I was also under the impression that L76/L92/LS3 were all the same size motors, but I maybe wrong. Either way, pull your motor apart and check on your parts, its all speculation right now what parts are good or bad.
What are the specs on that cam in the LS2 right now? Only issue I could forsee on that LS2 short block is it needs to be decked. The deck surface looks terrible.
Honestly, I would run the LS2 motor, too easy!
What are the specs on that cam in the LS2 right now? Only issue I could forsee on that LS2 short block is it needs to be decked. The deck surface looks terrible.
Honestly, I would run the LS2 motor, too easy!
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It is the stock cam. Never been touched or ran. That is the factory GM milling. Maybe the camera flash is giving it the wavy look. That little mess up at the back of the driver side will easily clean up with a file and stone. That's not a worry.
Last edited by frito1; 04-21-2009 at 10:09 PM.
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Dude honestly my 346 spun a bearing and all i could think about is going faster so i bought a 408 6.0 Iron short block from LME, heads & camshaft from Texas-Speed, and my local shop boys got me up and running! On no tune just a few flashes yesterday i ate some fast **** on a local cruise. The bigger cube is so worth it despite the cost, but in my opinion the durability is so much more as well as the life expectancie
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pulled the 346 out and got heads off tonight. The lower end is complete carnage. The heads came out good. #7 combustion chamber took a little beating but it will clean up just fine. The head isn't as bad as my unfocused camera showed. I'm am totally happy to save my heads! Picture inside of Fast intake. #7 piston broke to pieces. #8 rod snapped, but piston is complete and still at the top dead center. Both rods have ARP 2000 rod bolts intact and tight. Bearings are free on both. No valves were dropped
Last edited by frito1; 04-27-2009 at 11:19 PM.
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Nice first post. The car is completely tuned with shiftpoints of 6,900 and rev limiter at 7200 incase of driveline failure. I always take it to 6,900 at the track. He did nothing different than what I would have done.