a few options, whats your pick ? 03 5.3 swap
Feb 13, 2014 | 08:58 AM
#1
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a few options, whats your pick ? 03 5.3 swap
my 03 z71 started burning oil lately. like a of oil. im adding a quart every 2 weeks. dont know if its rings, or valve seals. i am just under 190k. i have found a few engines to swap in, and id like to know what direction you would go. first is a ls1.
"SELLING A 430 HP LS1 LONGBLOCK,,WITH CNC PORTED 243 HEADS,VENGEANCE VRX4 CAM
**NEW SLP OIL PUMP**
**NEW SLP PULLEY**
**NEW SLP TIMING CHAIN**
STRONG LOW MILEAGE BOTTOM END,,,,ENGINE IS IN GREAT RUNNING CONDITION AND STILL CAR,COME HERE IT RUN BEFORE PURCHASE SO YOU KNOW YOU'RE NOT BUYING JUNK,,,,, ALL UPGRADES WERE DONE 6 MONTHS AGO ***SERIOUS BUYERS ONLY PLEASE*****$2500"
and by low miles, he means 100k. said its still in the car if i want to hear/drive it.
2nd is an ls1 with "20k" on it. its on a crate so i have no way of verifying miles and or condition without tearing it down. its complete from intake to pan, but no accessories.
3rd is a "6.0 aluminum engine that has been bored over .050. has ls3 heads casting 823 .comes with edelblrock carb intake also comes with ls1 oil pan . im asking 2500 for everything"
also in a crate, so no way to verify that its not tired/blown.
i am coming across a few more here and there, but these 2 are sticking out in my mind since they are the closest to me distance wise. im basically looking for a close to bolt in application. i just have reservations of putting a 100k motor in. im also trying to stay under 4k for the complete swap. hit me with it, whats your thoughts ?
"SELLING A 430 HP LS1 LONGBLOCK,,WITH CNC PORTED 243 HEADS,VENGEANCE VRX4 CAM
**NEW SLP OIL PUMP**
**NEW SLP PULLEY**
**NEW SLP TIMING CHAIN**
STRONG LOW MILEAGE BOTTOM END,,,,ENGINE IS IN GREAT RUNNING CONDITION AND STILL CAR,COME HERE IT RUN BEFORE PURCHASE SO YOU KNOW YOU'RE NOT BUYING JUNK,,,,, ALL UPGRADES WERE DONE 6 MONTHS AGO ***SERIOUS BUYERS ONLY PLEASE*****$2500"
and by low miles, he means 100k. said its still in the car if i want to hear/drive it.
2nd is an ls1 with "20k" on it. its on a crate so i have no way of verifying miles and or condition without tearing it down. its complete from intake to pan, but no accessories.
3rd is a "6.0 aluminum engine that has been bored over .050. has ls3 heads casting 823 .comes with edelblrock carb intake also comes with ls1 oil pan . im asking 2500 for everything"
also in a crate, so no way to verify that its not tired/blown.
i am coming across a few more here and there, but these 2 are sticking out in my mind since they are the closest to me distance wise. im basically looking for a close to bolt in application. i just have reservations of putting a 100k motor in. im also trying to stay under 4k for the complete swap. hit me with it, whats your thoughts ?
Last edited by jeffz0rz; Feb 13, 2014 at 09:26 AM.
Feb 13, 2014 | 12:48 PM
#2
The 6.0 would be my choice. The first engine has a lot of goodies but it would require the most amount of money to install because you will want upgraded fuel pump/stall converter/etc. I doubt you stay under your $4000 budget with this motor.
The stock Ls1 would be a good option and performs well in a truck. We put one in my dads 2000 ecsb that had just over 100K on it. With a Black Bear tune we were very please with how it performed stock.
After having said that, if you have the option for more displacement than I would go for it. Just make sure you pull spark plugs (if it has them) so you can see how they look. This will also give you the chance to spin the motor over to make sure everything feels right and you could get a boroscope to look down into the cylinders to see if there are any obvious issues with the pistons or cylinder walls.
The stock Ls1 would be a good option and performs well in a truck. We put one in my dads 2000 ecsb that had just over 100K on it. With a Black Bear tune we were very please with how it performed stock.
After having said that, if you have the option for more displacement than I would go for it. Just make sure you pull spark plugs (if it has them) so you can see how they look. This will also give you the chance to spin the motor over to make sure everything feels right and you could get a boroscope to look down into the cylinders to see if there are any obvious issues with the pistons or cylinder walls.
Feb 13, 2014 | 01:54 PM
#3
Teching In
Joined: Nov 2012
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From: Ontario, Canada
The aluminum 6.0 is most likely a Gen IV engine, and the 823 heads will require a different intake if you want to stay fuel injected. These will have to be figured into your budget.
Option 2 will probably be the cheapest, possibly requiring nothing you don't already have besides a tune. Use your truck intake and accessories and you're off and running.
Option 2 will probably be the cheapest, possibly requiring nothing you don't already have besides a tune. Use your truck intake and accessories and you're off and running.
Feb 13, 2014 | 02:02 PM
#4
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on the first choice, if i ran my stock injectors, and my stock manifold/throttle body, would that be starving the engine for fuel because of the cam/heads ?
as far as a converter, i tow a car trailer once in a while, and want it street-able. the wife is going to put 90% of miles on it just back and forth to work. id be very tempted to run the stock converter. in theory, would it run off my stock computer for the time being , unless i get his computer of course. it would have to be re-tuned anyways if i used my stock intake/tb/injectors, correct ?
i am leaning toward the 6.0 as well, but dont have a way to verify the bore/stroke with it assembled. and there is no mention if what cam is in there. assuming it was a "stock" cam to the original 6.0 block, would that run off my current set up ( stock pump, converter/computer ect) ? i do understand the need for a tune/correct computer for each application.
as far as a converter, i tow a car trailer once in a while, and want it street-able. the wife is going to put 90% of miles on it just back and forth to work. id be very tempted to run the stock converter. in theory, would it run off my stock computer for the time being , unless i get his computer of course. it would have to be re-tuned anyways if i used my stock intake/tb/injectors, correct ?
i am leaning toward the 6.0 as well, but dont have a way to verify the bore/stroke with it assembled. and there is no mention if what cam is in there. assuming it was a "stock" cam to the original 6.0 block, would that run off my current set up ( stock pump, converter/computer ect) ? i do understand the need for a tune/correct computer for each application.
Feb 13, 2014 | 03:57 PM
#5
on the first choice, if i ran my stock injectors, and my stock manifold/throttle body, would that be starving the engine for fuel because of the cam/heads ?
Yes you would starve the engine for fuel. You would need upgraded injectors and fuel pump most likely unless your truck is flex fuel
as far as a converter, i tow a car trailer once in a while, and want it street-able. the wife is going to put 90% of miles on it just back and forth to work. id be very tempted to run the stock converter. in theory, would it run off my stock computer for the time being , unless i get his computer of course. it would have to be re-tuned anyways if i used my stock intake/tb/injectors, correct ?
You would not want to run the first motor on a stock converter with the cam that it has. It will be a dog off the line without a stall converter in the 3000+ range.
i am leaning toward the 6.0 as well, but dont have a way to verify the bore/stroke with it assembled. and there is no mention if what cam is in there. assuming it was a "stock" cam to the original 6.0 block, would that run off my current set up ( stock pump, converter/computer ect) ? i do understand the need for a tune/correct computer for each application.
As said above, if the 6.0 is in fact aluminum that means it is most likely a Gen IV motor using a cam sensor setup with a 58x tooth reluctor wheel instead of a 24x tooth that is on your 03 stock. You would have to deal with that plus the rectangle port heads which your stock 03 truck intake wont fit because it is meant for cathedral port heads. If it has the stock cam, however, you could use your stock stall and stock fuel pump.
So it comes down to this.......The first engine will take the most amount of money to swap, the second engine will take the lease amount of money to swap, but the third engine has the most poenential and is somewhere in the middle with the amount of money to swap.
Yes you would starve the engine for fuel. You would need upgraded injectors and fuel pump most likely unless your truck is flex fuel
as far as a converter, i tow a car trailer once in a while, and want it street-able. the wife is going to put 90% of miles on it just back and forth to work. id be very tempted to run the stock converter. in theory, would it run off my stock computer for the time being , unless i get his computer of course. it would have to be re-tuned anyways if i used my stock intake/tb/injectors, correct ?
You would not want to run the first motor on a stock converter with the cam that it has. It will be a dog off the line without a stall converter in the 3000+ range.
i am leaning toward the 6.0 as well, but dont have a way to verify the bore/stroke with it assembled. and there is no mention if what cam is in there. assuming it was a "stock" cam to the original 6.0 block, would that run off my current set up ( stock pump, converter/computer ect) ? i do understand the need for a tune/correct computer for each application.
As said above, if the 6.0 is in fact aluminum that means it is most likely a Gen IV motor using a cam sensor setup with a 58x tooth reluctor wheel instead of a 24x tooth that is on your 03 stock. You would have to deal with that plus the rectangle port heads which your stock 03 truck intake wont fit because it is meant for cathedral port heads. If it has the stock cam, however, you could use your stock stall and stock fuel pump.
So it comes down to this.......The first engine will take the most amount of money to swap, the second engine will take the lease amount of money to swap, but the third engine has the most poenential and is somewhere in the middle with the amount of money to swap.
Feb 13, 2014 | 04:35 PM
#6
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down to #2 and #3 then. i have to calculate/research what i would need to convert the cam sensor set up and swap manifold (while keeping my stock DBW TB/fuel system IF its running a stock cam) vs. dripping the stock "20k" motor in.
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Feb 13, 2014 | 08:50 PM
#8
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Scratch that. I googled. Ls1 intake manifold if im not mistaken. Would anyone recommend this converter for the reluctor wheel ?
https://www.google.com/url?sa=t&sour...Cgm89oqAWoWXXA
https://www.google.com/url?sa=t&sour...Cgm89oqAWoWXXA
Feb 13, 2014 | 09:07 PM
#9
Square intake port heads are put on the Gen IV and later engines so it would have to be an L76 truck intake, Ls3 or Ls7 car intake, etc. The Ls1 is a Gen III engine with cathedral port heads.
That module would probably work but I think there are cheaper ways to do the conversion. Search around on here and Google and see if you can find anything else.
That module would probably work but I think there are cheaper ways to do the conversion. Search around on here and Google and see if you can find anything else.
