New to the forum. Got some engine questions.
Feb 17, 2005 | 10:11 AM
#12
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Staging Lane
Joined: Feb 2005
Posts: 62
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Originally Posted by TigerFan187
Stroke your 4.8 to a LS1(5.7)! It will be nice and strong ironblock LS1 with the power of a 6.0!
. Please say it’s the rod length or the pistons. 
Feb 17, 2005 | 07:11 PM
#13
Originally Posted by —Bauker™—
This actually makes more sense than doing the 6.0 bore. My only question is: Is the deck height of the 5.3L Iron block the same as the LS1/LS6 alum. block. What draws me to this question is because if you were to use LS1/LS6 heads on a 4.8/5.3/6.0 block, the compression would be lower, but LS1/LS6 engines have a high compression. So is it the block that differs or the pistons/ rods? So many questions, so little time . Please say it’s the rod length or the pistons.
. Please say it’s the rod length or the pistons.
Feb 17, 2005 | 07:23 PM
#14
Adkoonerstrator
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From: Deep in the seedy underworld of Koonerville
Personally, I wouldn't fool with the 4.8L/5.3L block at all if I was going to build something. In the parts classified section there are tons of 6.0L blocks/shortblocks/parts for sale cheap. Get the 6.0L block because the bigger bore(4.0") will help any head you put on it flow more than the smaller 3.9 bore size of a punched out 5.3L block.
The LS1's have higher compression because of flat top pistons and smaller combustion chambers. The deck height is the same for all Gen III variants(4.8, 5.3, 5.7, 6.0L) at 9.24". The 4.8L has longer rods to make up the deck height with the shorter stroke.
As far as the computer is concerned, it is one of the most versaltile systems ever IMHO.
There are several tuning programs that allow you to use your laptop to make changes. There are also several vendors here that can get you set up with a custom tune for any changes you make.
OH, and WELCOME to the site.
The LS1's have higher compression because of flat top pistons and smaller combustion chambers. The deck height is the same for all Gen III variants(4.8, 5.3, 5.7, 6.0L) at 9.24". The 4.8L has longer rods to make up the deck height with the shorter stroke.
As far as the computer is concerned, it is one of the most versaltile systems ever IMHO.
There are several tuning programs that allow you to use your laptop to make changes. There are also several vendors here that can get you set up with a custom tune for any changes you make. OH, and WELCOME to the site.
Feb 17, 2005 | 07:31 PM
#15
Originally Posted by XLR8NSS
Personally, I wouldn't fool with the 4.8L/5.3L block at all if I was going to build something. In the parts classified section there are tons of 6.0L blocks/shortblocks/parts for sale cheap. Get the 6.0L block because the bigger bore(4.0") will help any head you put on it flow more than the smaller 3.9 bore size of a punched out 5.3L block.
The LS1's have higher compression because of flat top pistons and smaller combustion chambers. The deck height is the same for all Gen III variants(4.8, 5.3, 5.7, 6.0L) at 9.24". The 4.8L has longer rods to make up the deck height with the shorter stroke.
As far as the computer is concerned, it is one of the most versaltile systems ever IMHO. There are several tuning programs that allow you to use your laptop to make changes. There are also several vendors here that can get you set up with a custom tune for any changes you make.
OH, and WELCOME to the site.
The LS1's have higher compression because of flat top pistons and smaller combustion chambers. The deck height is the same for all Gen III variants(4.8, 5.3, 5.7, 6.0L) at 9.24". The 4.8L has longer rods to make up the deck height with the shorter stroke.
As far as the computer is concerned, it is one of the most versaltile systems ever IMHO.
There are several tuning programs that allow you to use your laptop to make changes. There are also several vendors here that can get you set up with a custom tune for any changes you make. OH, and WELCOME to the site.
fine, explain everthing, I can't have any fun, .....................back to the corner
Feb 17, 2005 | 07:33 PM
#16
Adkoonerstrator
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From: Deep in the seedy underworld of Koonerville
Originally Posted by moregrip
fine, explain everthing, I can't have any fun, .....................back to the corner
Feb 17, 2005 | 07:39 PM
#17
Originally Posted by F8L Z71
PWNED!!!! Hahahaha
I wouldn't bother doing the 5.3L over the 4.8L. Both are good motors and the 4.8L has a better rod ratio than the 5.3L. If you are going to do any motor swap just do it right the first time and do a 6.0L block. Stroke is up to you.
Dez Racing is putting together a mean lil 4.8L STS combo which should turn some heads. It's in a RCSB truck also.
I opted for a 370ci long rod setup since I had to rebuilt the motor anyway.
I wouldn't bother doing the 5.3L over the 4.8L. Both are good motors and the 4.8L has a better rod ratio than the 5.3L. If you are going to do any motor swap just do it right the first time and do a 6.0L block. Stroke is up to you.
Dez Racing is putting together a mean lil 4.8L STS combo which should turn some heads. It's in a RCSB truck also.
I opted for a 370ci long rod setup since I had to rebuilt the motor anyway.
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