All aluminum truck motors ?
09-30-2006, 08:29 PM
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I think it was just the SSR's that got them I have no clue about the 8.1L I think if it did there would be alot more talk of them on the conversion forum. Somebody correct me if I'm wrong. It is quite possible btw.
10-02-2006, 12:44 AM
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07 L92 and L76 power plants are aluminum block and heads.
Not sure if there is a 6.0 prior to the L76 that was an aluminum block for the trucks (minus the LS2 for the TBSS and SSR).
The LS4 5.3L (Impala SS and Grand Prix GTP's) are aluminum block 5.3's as well. They also come with the 243 (ls2/ls6) heads.
Not sure if there is a 6.0 prior to the L76 that was an aluminum block for the trucks (minus the LS2 for the TBSS and SSR).
The LS4 5.3L (Impala SS and Grand Prix GTP's) are aluminum block 5.3's as well. They also come with the 243 (ls2/ls6) heads.
10-02-2006, 12:49 AM
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Originally Posted by Bring the Noise
07 L92 and L76 power plants are aluminum block and heads.
Not sure if there is a 6.0 prior to the L76 that was an aluminum block.
Not sure if there is a 6.0 prior to the L76 that was an aluminum block.
Originally Posted by Bring the Noise
The LS4 5.3L (Impala SS and Grand Prix GTP's) are aluminum block 5.3's as well. They also come with the 243 (ls2/ls6) heads.
FWD blocks.... Can we still use them ? And dont these motors have a system that disengages 4 of the cylinders ? I wonder if they can still be used in hybrid applications.
10-02-2006, 01:00 AM
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Okay I did a quick look at Chevy's Truck spec page and found a 5.3L aluminum block with model designations of LH6/LC9
The LY5/LMG are cast iron block with aluminum heads.
http://www.chevrolet.com/silverado/specifications/
Note these are Gen IV and may have DOD.
The 2 models are probably Gas (LH6) and E85 capable (LC9)
But blocking off the DOD oil feeds in the valley (similar to an LS2) and going with an LS1 valve train should allow the motor to be used without DOD.
Now on the LS4 I'm not sure if the engine mounts where changed to allow the motor to be mounted horizontally in the FWD vehicles.
I wouldn't be suprised to see the LS4 share the same long block with the LH6. Probably just a difference in the manifold as the truck has the taller one
Oh and they are calling the L76 the "Vortex Max" for the chevy truck line. Damn why don't they offer the L92 in a Silverado SS???
The LY5/LMG are cast iron block with aluminum heads.
http://www.chevrolet.com/silverado/specifications/
Note these are Gen IV and may have DOD.
The 2 models are probably Gas (LH6) and E85 capable (LC9)
But blocking off the DOD oil feeds in the valley (similar to an LS2) and going with an LS1 valve train should allow the motor to be used without DOD.
Now on the LS4 I'm not sure if the engine mounts where changed to allow the motor to be mounted horizontally in the FWD vehicles.
I wouldn't be suprised to see the LS4 share the same long block with the LH6. Probably just a difference in the manifold as the truck has the taller one
Oh and they are calling the L76 the "Vortex Max" for the chevy truck line. Damn why don't they offer the L92 in a Silverado SS???
10-02-2006, 01:18 AM
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When I say block off the oil feeds I mean the extra oil feeds for the solinoids that reside in the valley under the manifold. Those oil feed can be blocked off as the LS2 has the feed lines built in but with them either blocked off or not tap'd out. These are the oil feeds that deactivate the DOD lifters which turns the motor into a V4 (fuel economy mode).
Replace the dual pattern cam and the DOD lifters with a LS1 design cam and lifter setup.
Replace the push rods as thats just a smart option.
The stock rockers can stay unless you want to opt for a set of harland sharp or Comp's (the comp's are expensive but work well).
I'm Not sure on the LS4 / LH6 as to what the Valves springs can handle.
If they are the GM Yellow's that are used in the LS2/LS6 then up to .575 lift.
They might be the old LS1 stile springs though so maybe a set of Comp 918's would be a good idea since the top half is going to be apart (gotta remove the heads to get the lifters out).
Since the LH6/LS4 are Gen IV motors the cam position sensor is probably on the cam gear instead of the cam. You can use a LS1 cam but you will need to use a LS2 timing chain set (which it probably comes with).
But thats for the newer motors... I'm still not sure if GM made a 5.3 Gen III aluminum block?
What are you planning on transplanting the motor into?
Replace the dual pattern cam and the DOD lifters with a LS1 design cam and lifter setup.
Replace the push rods as thats just a smart option.
The stock rockers can stay unless you want to opt for a set of harland sharp or Comp's (the comp's are expensive but work well).
I'm Not sure on the LS4 / LH6 as to what the Valves springs can handle.
If they are the GM Yellow's that are used in the LS2/LS6 then up to .575 lift.
They might be the old LS1 stile springs though so maybe a set of Comp 918's would be a good idea since the top half is going to be apart (gotta remove the heads to get the lifters out).
Since the LH6/LS4 are Gen IV motors the cam position sensor is probably on the cam gear instead of the cam. You can use a LS1 cam but you will need to use a LS2 timing chain set (which it probably comes with).
But thats for the newer motors... I'm still not sure if GM made a 5.3 Gen III aluminum block?
What are you planning on transplanting the motor into?
10-02-2006, 02:38 AM
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Originally Posted by Bring the Noise
What are you planning on transplanting the motor into?
I already have a stock ls1 that's going into my chevelle but I want to build a motor down the road and am thinking a 6.0 alu block would be a nice a cheap way to start a build.
I wouldnt mind an ALuminum "BIG BLOCK" chevy motor either but I have yet to hear about someone doing this swap.
So the DOD can be bypassed.... hmmmm..... Sounds cool. Cant wait to see what happens with them in the futur.
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10-04-2006, 10:08 PM
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Originally Posted by Cop Car
if money isnt really an object buy an aftermarket aluminum big block and put all the new computer controls and such off a 8.1 on it..
10-30-2006, 01:23 AM
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Originally Posted by NO-OPTION-2002
2003-04 Trailblazer EXT
2005-06 1/2T 4x4 Ext. Cab w/L33 HO 5.3L 310HP
2005-06 1/2T 4x4 Ext. Cab w/L33 HO 5.3L 310HP
Interstingly enough I had my mom purchase an 06 Envoy XL Denali and it has the Aluminum block Gen IV 5.3L with DOD.
Sadly she has heated seats... wish the goat had those.
01-15-2007, 01:51 PM
#20
Originally Posted by Bring the Noise
Question: Are those Aluminum or Cast Iron Blocks?
Interstingly enough I had my mom purchase an 06 Envoy XL Denali and it has the Aluminum block Gen IV 5.3L with DOD.
Sadly she has heated seats... wish the goat had those.
Interstingly enough I had my mom purchase an 06 Envoy XL Denali and it has the Aluminum block Gen IV 5.3L with DOD.
Sadly she has heated seats... wish the goat had those.