third gen cast iron block and lsx aluminum engine block
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Joined: Jun 2001
Posts: 461
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From: Columbus, Ohio
Car: 92 Camaro RS
Engine: 350 TPI
Transmission: T5 manual
A gen 1 iron block is listed at 181 lbs. A gen 1 aluminum block is listed at ~90 lbs. I thought a LS1 was a little heavier, but in the same ballpark.
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Joined: Nov 2002
Posts: 889
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From: Kansas City
Car: 1991 Trans Am
Engine: L98
Transmission: T56
when i recieved my ls1 block, it was listed as 120lbs including the box and all the shipping material in it. only thing on the block is the crank sensor, no crank or internals.
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