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01-02-2009, 10:44 AM
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LM7 weight
I have looked for over an hour and can't find any info on the weight of an LM7 engine. I did find out it was 60 lbs heavier than it's LS4 aluminum block cousin. Also wondering what the weight is on a 4L60e transmission.
Any help would be appreciated. 
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01-03-2009, 05:44 AM
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I read somewhere the aluminum ls2 block is 107 and iron one is 172. The GM performance lsx block is 225. I don't believe there is a LS4. As for the 4L60
Transmission Weight Dry (Approximate) 298 mm Converter 70.5 kg (155.70 lb) Transmission Weight Wet (Approximate) 298 mm Converter 80.5 kg (176.16 lb) Do a Google search thats what I did.
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01-03-2009, 09:37 AM
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Yeah, I had been all over google for hours before I posted. Finally found this:
Weight of 5.3 LM7 (iron block) 518 lbs fully dressed and wet Weight of 4L60e transmission 195 lbs wet. I'm trying to figure how much weight I lost when I replaced the old drive train in my Suburban. All I need now is the weight of the old 3 speed manual. By the way, the old 235 I6 was 630 lbs.
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