What are the differences between LS6 and LS1 short blocks?
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From: Wilmington, MA
What are the differences between LS6 and LS1 short blocks? Is the LS6 short block any stronger than the LS1? Same rod bolts or will the LS6 ones hold up. I can't imagine they wouldn't have made the shortblock stronger, with the higher rpms of the LS6.
I know the weak point of the LS1 is the rod bolts, and then probably the pistons and then probably the rods. What's the weak point of the LS6 shortblock?
Also, are all LS6 pistons thermal coated or was that 02+ only?
Little rusty on my LS6 knowledge. Thinking about a Z06.
Thanks,
Dope
I know the weak point of the LS1 is the rod bolts, and then probably the pistons and then probably the rods. What's the weak point of the LS6 shortblock?
Also, are all LS6 pistons thermal coated or was that 02+ only?
Little rusty on my LS6 knowledge. Thinking about a Z06.
Thanks,
Dope
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From: Toronto, Canada
Re: What are the differences between LS6 and LS1 short blocks? the LS6 is a little thicker around the waterjackets (good for boring and resleeving)and the blocks are vented to help relieve crankcase pressure.
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Re: What are the differences between LS6 and LS1 short blocks? If you can grab one then think about it, but dont go paying a ton of money just cause it has the LS6 name. They are a dime a dozen. Metaphorically speaking...
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Re: What are the differences between LS6 and LS1 short blocks? Okay, so the block is stronger, but what about the rest of the short block? (rotating assembly)
Dope
Dope
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From: Miami
Re: What are the differences between LS6 and LS1 short blocks?
Man, all the knowledgable people that used to come here have been replaced by jokers 
Dope
Dope
Who's joking?:
IMPROVED BAY-T0-BAY BREATHING
The aluminum block casting deletes machined holes in the LS1 block bulkhead and adds honed "overtravel'' windows, which allow better bay-to-bay breathing. On the downstroke, pistons push air back toward the crankcase, creating back-pressure, or resistance, that slows downward movement and robs power. The LS6 block reduces this internal ``windage'' by managing airflow more efficiently. The overtravel windows allow air to move more freely between cylinder bays, reducing back-pressure and freeing the pistons' downward movement.
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Re: What are the differences between LS6 and LS1 short blocks? I was actually referring to the guy that posted above me. I was really asking about the short block, not the block itself, but I still managed to get 5 people telling me about the block 
I kinda doubt it's the same rotating assembly, because I've heard the pistons are thermal/teflon coated (?).
Dope
I kinda doubt it's the same rotating assembly, because I've heard the pistons are thermal/teflon coated (?).
Dope
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From: Nottingham, Notts, England, UK
Re: What are the differences between LS6 and LS1 short blocks? The late block is also sand cast instead of being die cast so I'm another dude talking about the block . Sand casting is meant to be superior to die casting from a strength point of view. Only the later pistons are teflon coated. As far as I know vette motors are more finely balanced but I haven't noticed any changes with the rods or rod bolts but then, I'm a long way away.
. Sand casting is meant to be superior to die casting from a strength point of view. Only the later pistons are teflon coated. As far as I know vette motors are more finely balanced but I haven't noticed any changes with the rods or rod bolts but then, I'm a long way away. 
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From: Raleigh, NC
Re: What are the differences between LS6 and LS1 short blocks?
I was actually referring to the guy that posted above me. I was really asking about the short block, not the block itself, but I still managed to get 5 people telling me about the block
I kinda doubt it's the same rotating assembly, because I've heard the pistons are thermal/teflon coated (?).
Dope
I kinda doubt it's the same rotating assembly, because I've heard the pistons are thermal/teflon coated (?).
Dope
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