aluminum 5.3L vs 5.7 ls1
03-02-2013, 09:59 AM
#1
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aluminum 5.3L vs 5.7 ls1 hello, i have not posted before, but i have searched. my name is Zack, i am in the process of building an LS swapped Porsche 944 turbo. i have been looking for an LS1 but have come across a good deal on a 5.3L aluminum long block.
my questions:
-whats the weight difference in the 5.3L vs Ls1?
-can i use all LS1 parts on the 5.3?
-how much power loss will i have using the 5.3 rather than 5.7?
-i am planning on adding a turbo, is one stronger than the other?
-the 5.3 is basically an LS1 block with a diff. bore?
-in the long sceam of things, prices and available parts, which engine would be cheaper/easier to get parts for?
i will NOT go with an iron block due to weight. i need to keep the 50/50 weight distribution. all aluminum is key.
my questions:
-whats the weight difference in the 5.3L vs Ls1?
-can i use all LS1 parts on the 5.3?
-how much power loss will i have using the 5.3 rather than 5.7?
-i am planning on adding a turbo, is one stronger than the other?
-the 5.3 is basically an LS1 block with a diff. bore?
-in the long sceam of things, prices and available parts, which engine would be cheaper/easier to get parts for?
i will NOT go with an iron block due to weight. i need to keep the 50/50 weight distribution. all aluminum is key.
03-02-2013, 10:03 AM
#2
all parts can be reused on a 5.3 and yes u can punch the 5.3 block safely to ls1 specs ALUMINUM OR IRON BLOCK. THE SLEEVES ARE THICK ON THE ALUMINUM BLOCK
Last edited by anheuserbusch08; 03-02-2013 at 11:15 AM.
03-03-2013, 04:17 PM
#7
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03-04-2013, 07:48 AM
#8
what is the aluminum block out of? this affects tranny selection and such.
IMO the true LS1 should be considered fairly undesirable,it commands a premium price for the second worst intake ever put on these engines(except the late ones that got LS6), the later 5.3s got better heads, connecting rods were updated etc.
If I had an aluminum 5.3l with 243 heads or a 5.7 to choose from I would probably pick the 5.3l because the heads are better to start and the 5.3l will be cheaper letting you send those heads in for professional porting that can make them better than most aftermarket heads. Then if you want to do a full build later as has been discussed the 5.3l block has the same bore potential anyway.
IMO the true LS1 should be considered fairly undesirable,it commands a premium price for the second worst intake ever put on these engines(except the late ones that got LS6), the later 5.3s got better heads, connecting rods were updated etc.
If I had an aluminum 5.3l with 243 heads or a 5.7 to choose from I would probably pick the 5.3l because the heads are better to start and the 5.3l will be cheaper letting you send those heads in for professional porting that can make them better than most aftermarket heads. Then if you want to do a full build later as has been discussed the 5.3l block has the same bore potential anyway.
