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LTX and LSX Putting LT1's, LS1's, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects, including repairs, swap info, and performance upgrades.

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Old 09-24-2009, 09:34 PM   #1
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LM7 Questions

I have an 2005 silverado with the vortec 5300 LM7. Both heads have a crack and I'm looking for a replacement. I can't find these heads for sale anywhere. Stock would be ok but aftermarket would even better. What heads out there would fit on an stock LM7?
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Old 09-24-2009, 10:03 PM   #2
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Car: 82 Berlinetta(2)/57 Bel Air
Engine: LS1 (LS1)/LQ4
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Axle/Gears: 10B 3.73(9" 4.11)/8.2" 4.11

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Welcome aboard thirdgen.org.

Gen III LSx heads will work. Don't know why you can't find any (don't know the LM7 casting # off the top of my head -no pun intended).

I have a set of LQ4 heads I won't be using, but I don't think you'd want them with their big chambers.
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Old 09-24-2009, 10:03 PM
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