L33 aluminum 5.3 block compared to an LS1 Block

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01-09-2008, 07:19 PM

#21

1FastBrick

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Quote:

Originally Posted by Beaflag VonRathburg

I just got a 2000 LS1 short block with excessive blowby in number 7 for $200. If you shop around you can find things really cheaply.

LS2 Conversion info:
https://ls1tech.com/forums/generation-iii-internal-engine/659189-ls2-conversion-info-inside.html

Awsome, thanks!!! I have my eye on a used LS1 block in the same price range. still waiting for pictures though...

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01-10-2008, 11:07 PM

#22

67RSCamaroVette

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Quote:

Originally Posted by spookyz28

YOU SHOULD BE ABLE TO BORE STROKE SLEEVE, NO PROBLEMS. THE EXTERIOR BOLT ON'S WONT MATCH I THINK

holy misinformation, batman. to increase bore you have to resleeve past 5.7 . YES all exterior accessories will bolt up, exactly like they do any other LS block.

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01-10-2008, 11:18 PM

#23

1FastBrick

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Quote:

Originally Posted by 67RSCamaroVette

holy misinformation, batman. to increase bore you have to resleeve past 5.7 . YES all exterior accessories will bolt up, exactly like they do any other LS block.

Thanks for clearing that up. What about strength wise, any forseen issues??? Some one said they Had one but I have not seen any pictures of one that I can compare to an LS1 or 2 block.

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01-10-2008, 11:21 PM

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1FastBrick

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Quote:

Originally Posted by Project GatTagO

Its amazing the kind of information that gets posted when people do not know 100%. I have an aluminum 5.3L sitting in my garage. Externally it is identical to an LS1 in every respect. All external bolt-ons will bolt on without issues. The sleeves have the same O.D. as the 5.7L engines so it can easily be bored to be a 5.7L engine. The crank and rods are the same as an LS1.

Andrew

Internally, do the blocks look to be the same or does one look Like it has a thicker Main webing then the other???

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01-12-2008, 11:42 PM

#25

Project GatTagO

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Quote:

Originally Posted by 1FastBrick

Internally, do the blocks look to be the same or does one look Like it has a thicker Main webing then the other???

Thats hard to say considering I do not have an LS1 block next to it for reference.

Andrew

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01-30-2008, 05:38 PM

#26

Fast99408

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4.8 all the way to 6.0 are the same block just different bores you can take a 5.3 and resleve it and bore it to a 6.0 or you can just get a 6.0 liter iron block for $300 which would be cheaper but its up to you

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01-30-2008, 07:33 PM

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Project GatTagO

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The Trailblazer 5.3L have the dipstick in the pan so the block does not have a hole in the block. The block has the dipstick boss cast into it but it is not machines.

Andrew

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