Help identifying L33 before purchase
05-21-2020, 11:23 AM
#1
Help identifying L33 before purchase I am trying to purchase L33 from 07 Silverado. Before taking a long drive, Id like to confirm that is is indeed L33. Seller says yes. After looking at multiple pictures online i have few suspicions. Fuel rail for example looks different. Looks like it is aluminum, heads are 799. Can someone help identifying this engine? Thank you
Last edited by gb1980; 05-22-2020 at 10:52 AM.
05-21-2020, 02:20 PM
#2
Its an aluminum truck block so its almost certainly 5.3.
L33 is 24x which uses the cam pos sensor located at the rear of the engine behind the intake manifold. If the cam pos sensor is on the timing cover its almost always 58x and not an L33. If its front mounted check the crank position sensor if its black color its 24x if its grey color its 58x
L33 is 24x which uses the cam pos sensor located at the rear of the engine behind the intake manifold. If the cam pos sensor is on the timing cover its almost always 58x and not an L33. If its front mounted check the crank position sensor if its black color its 24x if its grey color its 58x
05-21-2020, 02:35 PM
#3
Its an aluminum truck block so its almost certainly 5.3.
L33 is 24x which uses the cam pos sensor located at the rear of the engine behind the intake manifold. If the cam pos sensor is on the timing cover its almost always 58x and not an L33. If its front mounted check the crank position sensor if its black color its 24x if its grey color its 58x
L33 is 24x which uses the cam pos sensor located at the rear of the engine behind the intake manifold. If the cam pos sensor is on the timing cover its almost always 58x and not an L33. If its front mounted check the crank position sensor if its black color its 24x if its grey color its 58x
Last edited by gb1980; 05-21-2020 at 03:20 PM.
05-21-2020, 02:50 PM
#4
TECH Enthusiast
Its an aluminum truck block so its almost certainly 5.3.
L33 is 24x which uses the cam pos sensor located at the rear of the engine behind the intake manifold. If the cam pos sensor is on the timing cover its almost always 58x and not an L33. If its front mounted check the crank position sensor if its black color its 24x if its grey color its 58x
L33 is 24x which uses the cam pos sensor located at the rear of the engine behind the intake manifold. If the cam pos sensor is on the timing cover its almost always 58x and not an L33. If its front mounted check the crank position sensor if its black color its 24x if its grey color its 58x
So what do you have if you have a 799 headed aluminum 5.3L with a black front mounted crank sensor?
05-21-2020, 08:36 PM
#6
I see a gray crank position sensor, which would be 58x.
Also the back looks like a top plate under the intake where to oil sender goes, it's not screwed into the block. Meaning the cam sensor is not there.
So LC9 or LH6
And it looks like it doesn't have the original head and exhaust gaskets.
Also the back looks like a top plate under the intake where to oil sender goes, it's not screwed into the block. Meaning the cam sensor is not there.
So LC9 or LH6
And it looks like it doesn't have the original head and exhaust gaskets.
05-22-2020, 10:33 AM
#7
I see a gray crank position sensor, which would be 58x.
Also the back looks like a top plate under the intake where to oil sender goes, it's not screwed into the block. Meaning the cam sensor is not there.
So LC9 or LH6
And it looks like it doesn't have the original head and exhaust gaskets.
Also the back looks like a top plate under the intake where to oil sender goes, it's not screwed into the block. Meaning the cam sensor is not there.
So LC9 or LH6
And it looks like it doesn't have the original head and exhaust gaskets.
Another pic
Trending Topics
05-22-2020, 02:44 PM
#9
Get more pics of the sensors, thats what you need to know more than anything. This thread is informative on blocks
https://ls1tech.com/forums/forced-in...-castings.html
https://ls1tech.com/forums/forced-in...-castings.html
05-22-2020, 10:40 PM
#10
TECH Resident
If you look at the pic of the back of the engine you can see a spot just under the drivers side head where the block has an indent. That's where the number is. This link shows a pic of what I'm describing
https://southernperformancesystems.c...k-casting.html
https://southernperformancesystems.c...k-casting.html
05-26-2020, 02:47 PM
#11
If you look at the pic of the back of the engine you can see a spot just under the drivers side head where the block has an indent. That's where the number is. This link shows a pic of what I'm describing
https://southernperformancesystems.c...k-casting.html
https://southernperformancesystems.c...k-casting.html