GEN 3 vs the GEN 4 LS BLOCKS QUESTIONS
#1
GEN 3 vs the GEN 4 LS BLOCKS QUESTIONS
I have one question regarding the GEN 3 Ls block and the GEN 4 ls block.
I wanted to know what are the main differences as far architecture of the block?
What differences AND changes were made to make the block better?
And are the heads for both blocks interchangeable between each other?
I wanted to know what are the main differences as far architecture of the block?
What differences AND changes were made to make the block better?
And are the heads for both blocks interchangeable between each other?
#2
All the cylinder heads are interchangeable. The ls2 block shares alot of things in common with the ls6 but was tweaked to make it even better. Some things are bay to bay breathing in the crank case and improved oiling passages. I would say 90 percent of parts are interchangeable between a gen 3 and a gen 4, but don't quote the percentage. Another difference you should note is gen 4s has a 58x reflector wheel on the crankshaft where gen 3 uses a 24x and are not compatible with each other.
#3
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^^^ +1
Also:
the location of the knock sensors moved from the valley to the outside of the block.
the head bolt lengths changed
drive-by-wire throttle body
The MAP sensor moved
More ribs for strength
Also:
the location of the knock sensors moved from the valley to the outside of the block.
the head bolt lengths changed
drive-by-wire throttle body
The MAP sensor moved
More ribs for strength
#5
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Gen IV changes
The water jacket is raised ~.750" on the Gen IV blocks vs. the Gen III. Also the Gen IV blocks are true siamesed bore blocks. The Gen III blocks have a coolant transfer passage between the bores from just below the deck surface to about two inches down. The lack of coolant crossover passage between the bores makes the Gen IV blocks capable of being dry sleeved for increased displacement where the Gen III blocks need wet liners for large bore with reliability.
Steve
Steve
I have one question regarding the GEN 3 Ls block and the GEN 4 ls block.
I wanted to know what are the main differences as far architecture of the block?
What differences AND changes were made to make the block better?
And are the heads for both blocks interchangeable between each other?
I wanted to know what are the main differences as far architecture of the block?
What differences AND changes were made to make the block better?
And are the heads for both blocks interchangeable between each other?
__________________
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
Steve Demirjian
Race Engine Development
Oceanside, Ca.
760-630-0450
web: www.raceenginedevelopment.com/
e-mail: race-engine-development@***.net
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#9
#10
Perfect. That is what needed to know. I already purchased the wiring harness for the LY6. Now if I decide to upgrade to the LSX, I just wanted to make sure that the wiring will remain the same.
Thank You.
Thank You.
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