HOW TO: LT1 Camshaft and Cylinder Head Install Guide
#21
Melting Slicks
watching that video its Very interesting that the spacing of such a tight tolerance moving part would change oil pressure that much. i mean few thousandth each way..
learn something new every day.,
learn something new every day.,
#23
cam dod delete Tx Speed kit
I have been following this thread as I've been installing my Tx Speed cam, dod delete, cam phase limiter, trunion upgrade, header kit. 2017 Denali L86. Thread has been real asset, well done Thanks!
Hope to get this finished and start on Whipple kit. They say this engine has a lot to offer, I'm here to collect.
Issue: I am back together and started. No oil or very Little oil at rocker arms. 80#'s on a mechanical gauge tee'd into the cooler line in radiator. Dash gauge shows zero pressure. My guess is Tx Speed included the wrong lifters. I am reusing the non DOD cylinders lifters and they included new rollers to replace the DOD cylinders. They also sent me rocker arm bolts that were to long and unusable. Thoughts?
Update 2 years later, I replaced the LS7 lifters with Johnson lifters from Cam Motion and the lifters now oil up correctly, quickly.
Hope to get this finished and start on Whipple kit. They say this engine has a lot to offer, I'm here to collect.
Issue: I am back together and started. No oil or very Little oil at rocker arms. 80#'s on a mechanical gauge tee'd into the cooler line in radiator. Dash gauge shows zero pressure. My guess is Tx Speed included the wrong lifters. I am reusing the non DOD cylinders lifters and they included new rollers to replace the DOD cylinders. They also sent me rocker arm bolts that were to long and unusable. Thoughts?
Update 2 years later, I replaced the LS7 lifters with Johnson lifters from Cam Motion and the lifters now oil up correctly, quickly.
Last edited by SteveOO; 07-23-2021 at 10:10 PM.
#24
I'm Batman..
Pro Mechanic
Thread Starter
Member Since: Apr 2014
Location: Lehigh Acres FL
Posts: 6,130
Received 908 Likes
on
561 Posts
Tech Contributor
I have been following this thread as I've been installing my Tx Speed cam, dod delete, cam phase limiter, trunion upgrade, header kit. 2017 Denali L86. Thread has been real asset, well done Thanks!
Hope to get this finished and start on Whipple kit. They say this engine has a lot to offer, I'm here to collect.
Issue: I am back together and started. No oil or very Little oil at rocker arms. 80#'s on a mechanical gauge tee'd into the cooler line in radiator. Dash gauge shows zero pressure. My guess is Tx Speed included the wrong lifters. I am reusing the non DOD cylinders lifters and they included new rollers to replace the DOD cylinders. They also sent me rocker arm bolts that were to long and unusable. Thoughts?
Hope to get this finished and start on Whipple kit. They say this engine has a lot to offer, I'm here to collect.
Issue: I am back together and started. No oil or very Little oil at rocker arms. 80#'s on a mechanical gauge tee'd into the cooler line in radiator. Dash gauge shows zero pressure. My guess is Tx Speed included the wrong lifters. I am reusing the non DOD cylinders lifters and they included new rollers to replace the DOD cylinders. They also sent me rocker arm bolts that were to long and unusable. Thoughts?
First, did you use the oil pump alignment tool when you pulled the oil pump off?
So for your lifters, to make sure im following you got 8 new lifters to replace the DOD lifters and are reusing the other 8 correct?
The rocker arm bolts happened to me with my kit from Vengeance. Sounds like they sent you LS bolts and not LT bolts. Call them, they should be able to get correct ones sent over to you.
Something else I would check is make sure your head gaskets are on correct. If the are flipped the wrong way you could be blocking the oil galleys leading in to the head.
Did you plug the AFM towers?
Lets start with those. We can go from there.
Ant
#25
Thanks man! Ok lets see what we can figure out. Some questions for you:
First, did you use the oil pump alignment tool when you pulled the oil pump off?
So for your lifters, to make sure im following you got 8 new lifters to replace the DOD lifters and are reusing the other 8 correct?
The rocker arm bolts happened to me with my kit from Vengeance. Sounds like they sent you LS bolts and not LT bolts. Call them, they should be able to get correct ones sent over to you.
Something else I would check is make sure your head gaskets are on correct. If the are flipped the wrong way you could be blocking the oil galleys leading in to the head.
Did you plug the AFM towers?
Lets start with those. We can go from there.
Ant
First, did you use the oil pump alignment tool when you pulled the oil pump off?
So for your lifters, to make sure im following you got 8 new lifters to replace the DOD lifters and are reusing the other 8 correct?
The rocker arm bolts happened to me with my kit from Vengeance. Sounds like they sent you LS bolts and not LT bolts. Call them, they should be able to get correct ones sent over to you.
Something else I would check is make sure your head gaskets are on correct. If the are flipped the wrong way you could be blocking the oil galleys leading in to the head.
Did you plug the AFM towers?
Lets start with those. We can go from there.
Ant
Lifters, I am re-using the non dod lifters, and my kit included eight new lifters to replace the dod lifters. I noticed an oil hole drilled in the lower side of each lifter. It looked like the hole could face forward or back due to a chamfer in the block.
Head Gaskets, They clearly said FRONT on the factory gaskets, and cannot be installed upside down, due to lifter gallery holes.
AMF towers are plugged with pound in aluminum slugs, which I tappered the top of to fit into cover plate.
Idle speed was 1300+- for 80+ # reading, cold 10w30 oil 50 degress
That pressure is so high, seems to confirm idea that lifters are blocking oil, not flowing through them.
Tx speed did admit the bolts were wrong and sent me the correct bolts at no charge. Why are the kits wrong for this engine? Same issue with the lifters? How many lifter types are there?
Do you know where the oil pressure sender is located?
#26
I'm Batman..
Pro Mechanic
Thread Starter
Member Since: Apr 2014
Location: Lehigh Acres FL
Posts: 6,130
Received 908 Likes
on
561 Posts
Tech Contributor
Oil Pump, I did not have the alignment tool. I loosened the 4 bolts and spun the engine with the starter, self centering the gears. We will see if this works. I'm hopeful.
Lifters, I am re-using the non dod lifters, and my kit included eight new lifters to replace the dod lifters. I noticed an oil hole drilled in the lower side of each lifter. It looked like the hole could face forward or back due to a chamfer in the block.
Head Gaskets, They clearly said FRONT on the factory gaskets, and cannot be installed upside down, due to lifter gallery holes.
AMF towers are plugged with pound in aluminum slugs, which I tappered the top of to fit into cover plate.
Idle speed was 1300+- for 80+ # reading, cold 10w30 oil 50 degress
That pressure is so high, seems to confirm idea that lifters are blocking oil, not flowing through them.
Tx speed did admit the bolts were wrong and sent me the correct bolts at no charge. Why are the kits wrong for this engine? Same issue with the lifters? How many lifter types are there?
Do you know where the oil pressure sender is located?
Lifters, I am re-using the non dod lifters, and my kit included eight new lifters to replace the dod lifters. I noticed an oil hole drilled in the lower side of each lifter. It looked like the hole could face forward or back due to a chamfer in the block.
Head Gaskets, They clearly said FRONT on the factory gaskets, and cannot be installed upside down, due to lifter gallery holes.
AMF towers are plugged with pound in aluminum slugs, which I tappered the top of to fit into cover plate.
Idle speed was 1300+- for 80+ # reading, cold 10w30 oil 50 degress
That pressure is so high, seems to confirm idea that lifters are blocking oil, not flowing through them.
Tx speed did admit the bolts were wrong and sent me the correct bolts at no charge. Why are the kits wrong for this engine? Same issue with the lifters? How many lifter types are there?
Do you know where the oil pressure sender is located?
Do you have any pics of the lifters? I'm curious about the hole you describe. You can PM them to me if you like.
With the head gaskets I was just making sure you somehow didn't have them flipped where the "front" marking was in the back. They can actually fit that way if you aren't paying attention. lol
That pressure does seem high. Also, did you soak the lifters in oil for a few hours before installing them?
Good deal on the AFM towers. That's the same kind I have.
Not sure about why the bolts are wrong, likely they are still selling 3 LS cams to every 1 LT cam and easily got them mixed up.
Did you do new pushrods by chance? if so what size?
Oil pressure sensor is on top of the valley cover. If you're looking at the front of the motor, its in the front left of the top of the valley cover.
I would check out that sensor to see if there is an issue with it, and if it checks out ok, maybe start looking into the lifters.
Ant
The following users liked this post:
FYREANT (12-23-2017)
#28
#32
Race Director
Member Since: Apr 2016
Location: Pittsburgh
Posts: 10,667
Received 4,704 Likes
on
2,995 Posts
2023 C6 of the Year Finalist - Unmodified
2022 C6 of the Year Finalist - Unmodified
2021 C6 of the Year Finalist - Unmodified
FYREANT, Nice job with the install & your step by step process! Thank goodness that I have an LS based motor & don't have to pull the engine to do a cam swap! Another reason not to buy a C7...sorry guys
#33
I am also now getting oil to most rockers.
The engine starts on all cylinders 5 seconds and then almost dies. Revs back up but it is shutting down some of the cylinders. dod trying to deactivate fuel and spark? seems like the wrong cylinders.
I do not have most sensors plugged in, and no coolant. starting as you see it above.
Last edited by SteveOO; 12-25-2017 at 04:22 PM.
#34
I'm Batman..
Pro Mechanic
Thread Starter
Member Since: Apr 2014
Location: Lehigh Acres FL
Posts: 6,130
Received 908 Likes
on
561 Posts
Tech Contributor
I warmed the oil pan (don't ask how)- restarted, and am getting high oil pressure at this location, when I backed out sensor it squirted 10 ft.
I am also now getting oil to most rockers.
The engine starts on all cylinders 5 seconds and then almost dies. Revs back up but it is shutting down some of the cylinders. dod trying to deactivate fuel and spark? seems like the wrong cylinders.
I do not have most sensors plugged in, and no coolant. starting as you see it above.
I am also now getting oil to most rockers.
The engine starts on all cylinders 5 seconds and then almost dies. Revs back up but it is shutting down some of the cylinders. dod trying to deactivate fuel and spark? seems like the wrong cylinders.
I do not have most sensors plugged in, and no coolant. starting as you see it above.
#35
I warmed the oil pan (don't ask how)- restarted, and am getting high oil pressure at this location, when I backed out sensor it squirted 10 ft. Not sure why sensor is not reading.
I am also now getting oil to most/ all rockers.
The engine starts on all cylinders for 3 seconds and then almost dies, Revs back up but it is shutting down some of the cylinders, header pipes get cold. dod trying to deactivate fuel and spark? seems like the wrong cylinders. I may have knocked plug wires loose.
I do not have most sensors plugged in, and no coolant. starting as you see it above.
Also do you know what the sensor is that looks like it is plugged into the oil pump, passenger side bottom. I pulled the tan grommet loose, but it looks like it is still plugged in, s/b ok?
I am also now getting oil to most/ all rockers.
The engine starts on all cylinders for 3 seconds and then almost dies, Revs back up but it is shutting down some of the cylinders, header pipes get cold. dod trying to deactivate fuel and spark? seems like the wrong cylinders. I may have knocked plug wires loose.
I do not have most sensors plugged in, and no coolant. starting as you see it above.
Also do you know what the sensor is that looks like it is plugged into the oil pump, passenger side bottom. I pulled the tan grommet loose, but it looks like it is still plugged in, s/b ok?
#36
I'm Batman..
Pro Mechanic
Thread Starter
Member Since: Apr 2014
Location: Lehigh Acres FL
Posts: 6,130
Received 908 Likes
on
561 Posts
Tech Contributor
I warmed the oil pan (don't ask how)- restarted, and am getting high oil pressure at this location, when I backed out sensor it squirted 10 ft. Not sure why sensor is not reading.
I am also now getting oil to most/ all rockers.
The engine starts on all cylinders for 3 seconds and then almost dies, Revs back up but it is shutting down some of the cylinders, header pipes get cold. dod trying to deactivate fuel and spark? seems like the wrong cylinders. I may have knocked plug wires loose.
I do not have most sensors plugged in, and no coolant. starting as you see it above.
Also do you know what the sensor is that looks like it is plugged into the oil pump, passenger side bottom. I pulled the tan grommet loose, but it looks like it is still plugged in, s/b ok?
I am also now getting oil to most/ all rockers.
The engine starts on all cylinders for 3 seconds and then almost dies, Revs back up but it is shutting down some of the cylinders, header pipes get cold. dod trying to deactivate fuel and spark? seems like the wrong cylinders. I may have knocked plug wires loose.
I do not have most sensors plugged in, and no coolant. starting as you see it above.
Also do you know what the sensor is that looks like it is plugged into the oil pump, passenger side bottom. I pulled the tan grommet loose, but it looks like it is still plugged in, s/b ok?
Last edited by FYREANT; 12-25-2017 at 08:27 PM.
#37
The sensor could be faulty. It has happened to other members before. What do you have for a tune? You must leave the connector in there for the oil pump. Thats also my point too. You can't start the car with multiple engine control sensors unplugged. It will freak out the CPU. It may be trying to go into eco mode or it my be trying to figure what to do since it doesn't have all the sensors plugged in. I guess I am curious why you are trying to start the engine without it being completely put back together 100%..
#38
I'm Batman..
Pro Mechanic
Thread Starter
Member Since: Apr 2014
Location: Lehigh Acres FL
Posts: 6,130
Received 908 Likes
on
561 Posts
Tech Contributor
I wanted to hear it run before installing timing chain cover and accessories. If I had to tear it back down its quicker and cheaper. Also wanted to verify oil pressure in case the pump had to be manipulated. I am now starting to put it back together. I do not have a tune, Tx Speed did not have one with cam and headers. I may buy one just to sort out sensors working vs not. suggestions?
#39
Racer
What length of pushrod did you end up with?
Also did you run across any issues with lash. I set my TDC and set my zero lash on the #1 exhaust, when i go to the intake side on #1 with the same pushrod length checker i have all kinds of play. I can feel the plunger on both compress and rebound.
As it is with no preload and splitting the difference between the 2 for zero lash, it seems like my rod length is around 8.0.
Also did you run across any issues with lash. I set my TDC and set my zero lash on the #1 exhaust, when i go to the intake side on #1 with the same pushrod length checker i have all kinds of play. I can feel the plunger on both compress and rebound.
As it is with no preload and splitting the difference between the 2 for zero lash, it seems like my rod length is around 8.0.
#40
What length of pushrod did you end up with?
Also did you run across any issues with lash. I set my TDC and set my zero lash on the #1 exhaust, when i go to the intake side on #1 with the same pushrod length checker i have all kinds of play. I can feel the plunger on both compress and rebound.
As it is with no preload and splitting the difference between the 2 for zero lash, it seems like my rod length is around 8.0.
Also did you run across any issues with lash. I set my TDC and set my zero lash on the #1 exhaust, when i go to the intake side on #1 with the same pushrod length checker i have all kinds of play. I can feel the plunger on both compress and rebound.
As it is with no preload and splitting the difference between the 2 for zero lash, it seems like my rod length is around 8.0.