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427 LS2 vs 427 ls7 600 hp goal NA

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Old 07-29-2010, 03:21 PM
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Default 427 LS2 vs 427 ls7 600 hp goal NA
ok guys well just trying to gauge thoughts and see what other people think and thoughts on my new motor build

the goal is a 600RWHP NA motor that can take 100 shot here or there for fun. will have a T56 behind the motor.

i wana keep build cost as low as possiable but not have a shitty motor. i will spend money where it needs to be spent but i dont want get toooo crazy on the motor. so please do keep cost in mind. just wana see your guys thoughts. thanks guys

if you have some ideas of your own please do tell

option A.
stock c6Z06 427 with H/C/I
block will have stock sleeves
stock crank and rods.

option B.
i think will be over budget a little with this setup but if its wayyyy safer and stronger i would say screw it and do it right.

427 LS2
resleeved
H/C/I
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Old 07-29-2010, 04:00 PM
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we have found the sleeved ls2's to be very much stronger than the ls7 cylinders.
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Old 07-29-2010, 04:42 PM
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What's the cost difference between an LS7 short block and a resleeved LS2 427 short block?
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Old 07-29-2010, 04:49 PM
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This guy did a Darton sleeved LS2 block 427. IIRC it made over 650 HP and is reportedly VERY mild.

https://ls1tech.com/forums/generatio...b-c-d-e-f.html
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Old 07-30-2010, 11:56 AM
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i found the link yes thats sick! 15k is a BIG chunk of change hahaha
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Old 07-30-2010, 09:54 PM
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Originally Posted by Shawn @ VA Speed
we have found the sleeved ls2's to be very much stronger than the ls7 cylinders.
So what benefits does the LS7 offer, then, comparing just blocks and bottom ends of course?
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Old 07-31-2010, 09:08 AM
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Originally Posted by BAD-LSX-7
the goal is a 600RWHP NA motor
You aint making 600rw on a stock sleeved LS2 or LS3.
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Old 07-31-2010, 09:13 AM
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Originally Posted by thedak
You aint making 600rw on a stock sleeved LS2 or LS3.
It says resleeved in the very first post!
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Old 07-31-2010, 10:15 AM
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Originally Posted by Troux
It says resleeved in the very first post!
thank you
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Old 07-31-2010, 10:21 AM
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Originally Posted by Troux
So what benefits does the LS7 offer, then, comparing just blocks and bottom ends of course?
the only benefit in the ls7 block is billet main caps-which are def not needed at this power level-we made 1800hp on stock main caps.
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Old 07-31-2010, 10:22 AM
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Originally Posted by Robofuzz
What's the cost difference between an LS7 short block and a resleeved LS2 427 short block?
about $100.00
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Old 07-31-2010, 10:30 AM
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so either would be fine to hold 700 though right shawn?
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Old 07-31-2010, 10:58 AM
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Originally Posted by Shawn @ VA Speed
the only benefit in the ls7 block is billet main caps-which are def not needed at this power level-we made 1800hp on stock main caps.
made 1800 on stock ls2 main caps or the ls7 main caps?
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Old 07-31-2010, 11:12 AM
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Originally Posted by BAD-LSX-7
so either would be fine to hold 700 though right shawn?
yes,either block will work fine.The sleeved block will give you more margin for tuning error.

Originally Posted by blackmagicturbo
made 1800 on stock ls2 main caps or the ls7 main caps?
1800 on stock ls2 main caps
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Old 07-31-2010, 01:02 PM
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I was under the impression that the LS7 block had more subtle advantages, such as better oiling/cooling between cylinders, or being overall lighter. Hmm...
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Old 07-31-2010, 01:25 PM
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me too i thought there were other upgrades on the LS7 block
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Old 07-31-2010, 02:22 PM
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Originally Posted by BAD-LSX-7

option A.
stock c6Z06 427 with H/C/I
block will have stock sleeves
stock crank and rods.

option B.
i think will be over budget a little with this setup

427 LS2
resleeved
H/C/I
Originally Posted by Troux
It says resleeved in the very first post!


Why even put Option A down then ?

Christ...
Last edited by thedak; 07-31-2010 at 02:32 PM.
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Old 07-31-2010, 02:29 PM
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Originally Posted by thedak


Why even put Option A down then ?

Christ...
last time i checked a c6zo6 had an ls7-not a ls2 or ls3
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Old 07-31-2010, 02:31 PM
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Originally Posted by Troux
I was under the impression that the LS7 block had more subtle advantages, such as better oiling/cooling between cylinders, or being overall lighter. Hmm...
all gen 4's have the same water jackets and oiling.if there is a difference-it's certainly very,very miniscule.
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Old 07-31-2010, 02:31 PM
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Originally Posted by Shawn @ VA Speed
last time i checked a c6zo6 had an ls7-not a ls2 or ls3




I've been up to long.

Ima GTFO while I'm ahead....
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