FI vs new LS6
03-04-2010, 03:09 PM
#21
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The LS6 block has larger "windows" between the bays in the block, to allow the air to move back and forth easier. This results in less pumping loss (pistons coming down create higher pressure, pistons going up create vacuum) which should make a couple more horse power at high rpms.
Rob (Bad30th)
Rob (Bad30th)
03-04-2010, 03:11 PM
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The LS6 block has larger "windows" between the bays in the block, to allow the air to move back and forth easier. This results in less pumping loss (pistons coming down create higher pressure, pistons going up create vacuum) which should make a couple more horse power at high rpms.
Rob (Bad30th)
Rob (Bad30th)
03-04-2010, 03:15 PM
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03-04-2010, 03:20 PM
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The differences between the LS1 and LS6 blocks are more or less negligable, really. Nothing to lose sleep over, although I'd probably opt for the LS6. There are some reports that the LS6 is made from a more dense alloy as well.
Take it from me, you will nickel and dime yourself to death once you start down the blower road (cooling, belt slip, fueling, tuning, breaking the next weakest link in the drivetrain as you go) so it would be good to have a solid drivetrain foundation to start out with.
Rob (Bad30th)
Take it from me, you will nickel and dime yourself to death once you start down the blower road (cooling, belt slip, fueling, tuning, breaking the next weakest link in the drivetrain as you go) so it would be good to have a solid drivetrain foundation to start out with.
Rob (Bad30th)
03-04-2010, 03:31 PM
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Personally i would go with the advice of building, or getting in contact with someone who can build you a decent motor. I dont know that i would buy a crate motor, especially since you mention putting a cam in it anyway. If moneys an issue, i'd build a forged bottom end, use your top end for now and replace or port that later on. Start at the bottom in my opion, and that is your bottom end. I wish i was in your situation and had 5k to dump into a motor lol
03-04-2010, 03:44 PM
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The differences between the LS1 and LS6 blocks are more or less negligable, really. Nothing to lose sleep over, although I'd probably opt for the LS6. There are some reports that the LS6 is made from a more dense alloy as well.
Take it from me, you will nickel and dime yourself to death once you start down the blower road (cooling, belt slip, fueling, tuning, breaking the next weakest link in the drivetrain as you go) so it would be good to have a solid drivetrain foundation to start out with.
Rob (Bad30th)
Take it from me, you will nickel and dime yourself to death once you start down the blower road (cooling, belt slip, fueling, tuning, breaking the next weakest link in the drivetrain as you go) so it would be good to have a solid drivetrain foundation to start out with.
Rob (Bad30th)
03-04-2010, 03:45 PM
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03-04-2010, 04:55 PM
#29
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no doubt, difference in power in negligible, material and durability of the web design is vital toward long life of you bottom end is the main difference but i remember a bunch of clowns on here trying rip on me that there was no chance of a difference in power output. especially main bearings this is where a good difference lies.
03-04-2010, 05:33 PM
#30
Hmm. what are 130K milage LS1s going for these days?
I think i better stay out of the FI world for the moment. Sounds like a slippery slope of obsession. I guess it's time to go motor shopping and see what i can get for my price range and goals.
my reasoning for forging it and running dish-top pistons is simple:less compression more boost. although i wont be running 9.1 comp, the 10.3.1 will handle the boost perfectly and if i need to drop the compression a bit more i can also get a set of 317 heads for cheap
build a boost motor for the same price as the LS6. dilemma solved.
build a boost motor for the same price as the LS6. dilemma solved.
03-04-2010, 08:05 PM
#31
There was where a guy bought a SDPC $3100 LS6 LB and slipped a baby EPS cam in it so his wife wouldn't know and made 425 and ran high 11's. Of course it had boltons. He sold the brand new LS6 cam and springs out of the LB to offset part of the cam kit price. IIRC he had less than 5k in it
03-05-2010, 10:43 AM
#33
No good guy deal...you can still get them for $3,245 shipped.
https://ls1tech.com/forums/sponsor-s...0-shipped.html
I have purchased most all of my parts through SDPC and always have been very satisfied.
