LS3 short block
11-02-2011, 12:48 AM
#1
LS3 short block Category: Engine - Complete Motors
Price: $25000000
Part Fits: 2010+ Camaro, 93-02 Chevrolet Camaro, 93-02 Pontiac Firebird, Corvette, 04-06 Pontiac GTO, 04+ Cadillac CTS-V
Location (State): GA
Item Condition: Used
Engine: LS2/LS3/LS7/L92/LS9
LS Engine?: Fits LS Engine
short block has 18000 on the clock in perfect condition asking 3000obo pulling the heads off sometime this upcoming week pics will be up as soon as i get a chance... text me at 678 524 2974
James
Last edited by 4doortypels; 11-21-2011 at 10:30 PM.
11-13-2011, 02:32 AM
#7
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Do a search on here cause I think you got your casting #'s confused. 823's= L92 heads and the 821's are the ls3 heads.
Last edited by GONEB4U; 11-13-2011 at 02:47 AM.
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11-13-2011, 08:21 AM
#9
The 821's were a better casting head. They are not as rough of a cast. LS3 heads will have the hollow valves. L92 heads will not.
Pulled from the Corvette forum:
The chamber size is identicle as per the net static compression for a 6.2 liter. All the L92's -all castings-are made for the L92 block from the escalade which is 4.065 inches and is the same block in the 08 corvette. I wouldnt be surprised if the difference is the valve job for use with the hollow stem valves on the LS3. Being hollow stem wouldnt require a different valve job but the need for better performance may have mandated the addition of such a finish to justify a higher core price from GM as they did in 2001 with the introduction of the 243 head. Good input you have there though.
West coast cylinder heads (I was on the phone for 30 minutes yesterday with Richard---very helpful and informed man) and he stated there is no difference once ported with any of the castings. All will make about the same power even out of the box. There are advantages and disadvanteges to all castings in his opinion.
Pulled from the Corvette forum:
The chamber size is identicle as per the net static compression for a 6.2 liter. All the L92's -all castings-are made for the L92 block from the escalade which is 4.065 inches and is the same block in the 08 corvette. I wouldnt be surprised if the difference is the valve job for use with the hollow stem valves on the LS3. Being hollow stem wouldnt require a different valve job but the need for better performance may have mandated the addition of such a finish to justify a higher core price from GM as they did in 2001 with the introduction of the 243 head. Good input you have there though.
West coast cylinder heads (I was on the phone for 30 minutes yesterday with Richard---very helpful and informed man) and he stated there is no difference once ported with any of the castings. All will make about the same power even out of the box. There are advantages and disadvanteges to all castings in his opinion.
11-13-2011, 10:14 AM
#10
just giving my heads up it appears in pics that the 823 are truck heads l92 style and also i note the oil pan is not a vette style the front cover is a gto style top valley n front cover looks like you got a truck l92 6.2 take out to be more sure put a small micro camara in spark plug hole see if it has 1 valve relief it yes its not a ls3 block vette motor i know these block by heart taken to many apart going prices i have seen on our tech board for low mile l92 6.2 short block is around $1200 big willie had sold a couple for sale good luck with sale but $3000 for a used l92 short block is price eeee
11-13-2011, 10:38 AM
#11
sorry miss read post its seem it a long block! for sale but its still appears to be a l92 the differnce vette ls3 n l92 6.2 is bigger compression bigger cam n lighter valves almost like camparing a back in the day ls1 long block vette engine to a zo6 ls6 vette long block more higher rev power bigger cam higher compression better heads with the light valves just a heads up post it as l92 6.2 truck when you verify with camra lower compresion valve relief groove
11-17-2011, 09:59 PM
#14
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t racing... your an idiot first off the truck oil pan is on there to keep the motor sealed... second off a L92 short block is a 6.0L... there is a L99 which is a 6.2L...Im pulling the heads off this weekend so i can take pics of the pistons...
and yes i know 823 heads are considered L92 heads but they have been using 823 heads on a bunch of LS3 motors... my buddy has a 2010 camaro and has 823 casting heads and they are the stock heads that came on the car and have the lighter valves in them... so next time please dont come in here and tell me what I am selling because i am very well aware of what i have up for sell... thanks
and yes i know 823 heads are considered L92 heads but they have been using 823 heads on a bunch of LS3 motors... my buddy has a 2010 camaro and has 823 casting heads and they are the stock heads that came on the car and have the lighter valves in them... so next time please dont come in here and tell me what I am selling because i am very well aware of what i have up for sell... thanks
Last edited by 98silvermaro; 11-17-2011 at 10:39 PM.
11-18-2011, 06:52 PM
#19
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I believe originally that the 823's were L92 heads and 821's were LS3. SAME HEAD JUST DIFFERENT VALVES as been said here about 5 times. Im sure GM has now began to put whatever valves in whatever castings depending on what vehicle the engine is going into.