Anybody up on Chevy LS engines?

Anybody up on Chevy LS engines?

Joined: January 1st, 1970, 12:00 am

September 7th, 2017, 8:59 am #1

How much part interchange is there between the 4.8 and 5.3? Specifically, can the heads interchange, and are there any significant differences like valve size, port size or chamber volume.

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Joined: November 17th, 2014, 11:09 am

September 7th, 2017, 11:28 am #2

There's everything from Cast Iron(Seriously cast iron?) to aluminium bodies, variable timing, different bore sizes and so on...

One compact version for a FWD car even has a dfferent head bolt spacing.

https://en.wikipedia.org/wiki/LS_based_ ... ock_engine

That page should at least tell you if the cylinder bore is the same or not.
(If it isn't the same, then forget it.)
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