Ly6 cam info
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Teching In
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Ly6 cam info Just picked up a 2009 ly6 from a 2500 Sierra to go in my landcruiser, I would like a little more power than stock and wondered what cam & valve spring combo to go with?
I'm looking to keep/gain as much bottom end torque so wondered if I'm better keeping the vvt?
also going to freshen up the engine before it goes in with new lifters, trays probably do the head gaskets with arp head studs and all other gasket & seals!
anything else recommended ?
im new to ls engines!!
and this will be DD
Thanks for any feedback.
I'm looking to keep/gain as much bottom end torque so wondered if I'm better keeping the vvt?
also going to freshen up the engine before it goes in with new lifters, trays probably do the head gaskets with arp head studs and all other gasket & seals!
anything else recommended ?
im new to ls engines!!
and this will be DD
Thanks for any feedback.
Last edited by Mattyc; Dec 18, 2022 at 11:25 AM.
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Definitely try to keep the VVT. Unfortunately, there aren't as many cam options when you keep the VVT. Here are a few: https://briantooleyracing.com/camsha...s.html?cat=390
I would probably go with this one: https://briantooleyracing.com/btr-ca...892538136.html
I would probably go with this one: https://briantooleyracing.com/btr-ca...892538136.html
12 Second Club
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From: San Antonio
It looks like these would work with that cam: BRIAN TOOLEY RACING .630" LIFT SPRING KIT - STEEL RETAINER - SK003/S/0560/BB
After more searching, I found this one on Summit:
COMP CAMS:
Manufacturer's Part Number: 156-402-13
Summit Racing Part Number: CCA-156-402-13
This COMP cam has -3 degrees of overlap. That would be better for daily driving. The BTR cam has +5.5 degrees of overlap. That's really not a lot of overlap, but it will be noticeable when it idles.
Your best bet is to call Summit, and ask which springs they recommend for these cams. They might even be able to find other VVT cams that will work better. This is just all that I found in the single bolt cams. I'm not sure if the 3-bolt cams could be used with VVT, but I doubt it. Either way, I would recommend trying to find something similar to the BTR truck cams. I wouldn't go bigger than a stage-2 truck cam for daily driving.
After more searching, I found this one on Summit:
COMP CAMS:
Manufacturer's Part Number: 156-402-13
Summit Racing Part Number: CCA-156-402-13
This COMP cam has -3 degrees of overlap. That would be better for daily driving. The BTR cam has +5.5 degrees of overlap. That's really not a lot of overlap, but it will be noticeable when it idles.
Your best bet is to call Summit, and ask which springs they recommend for these cams. They might even be able to find other VVT cams that will work better. This is just all that I found in the single bolt cams. I'm not sure if the 3-bolt cams could be used with VVT, but I doubt it. Either way, I would recommend trying to find something similar to the BTR truck cams. I wouldn't go bigger than a stage-2 truck cam for daily driving.
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If you want to keep VVT and gain as much bottom end as possible, then the TSP 5.3 Stage 2 VVT https://www.texas-speed.com/p-5330-t...-camshaft.aspx is a good choice. I believe they grind 6 degrees advance, which would put the IVC @ 32* with no retard. And the overlap is -13*, so should have good part throttle response as well.
Last edited by 68Formula; Dec 29, 2022 at 03:56 PM.
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OP,
We like the range of cams that @Utinator and @68Formula are looking at. If you want to keep VVT and have good low-end torque take a look at the Comp Cams CCA-189-400-13. Specs on it are .556/.568, 210/224, 114+9 with -11* of overlap. With no retarding that would put the .050" IVC at 30* ABDC. This will create excellent throttle response and low-end torque with good power gains. Pair the cam with Comps CCA-26918CS-KIT beehive spring kit and it will be happy out to 6,300+. This cam will require Comps CCA-5460
cam phaser limiter kit.
We like the range of cams that @Utinator and @68Formula are looking at. If you want to keep VVT and have good low-end torque take a look at the Comp Cams CCA-189-400-13. Specs on it are .556/.568, 210/224, 114+9 with -11* of overlap. With no retarding that would put the .050" IVC at 30* ABDC. This will create excellent throttle response and low-end torque with good power gains. Pair the cam with Comps CCA-26918CS-KIT beehive spring kit and it will be happy out to 6,300+. This cam will require Comps CCA-5460
cam phaser limiter kit.
Last edited by Summitracing; Dec 30, 2022 at 12:31 PM.
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OP,
We like the range of cams that @Utinator and @68Formula are looking at. If you want to keep VVT and have good low-end torque take a look at the Comp Cams CCA-156-400-13. Specs on it are .556/.568, 210/224, 114+9 with -11* of overlap. With no retarding that would put the .050" IVC at 30* ABDC. This will create excellent throttle response and low-end torque with good power gains. Pair the cam with Comps CCA-26918CS-KIT beehive spring kit and it will be happy out to 6,300+. This cam will require Comps CCA-5456 cam phaser limiter kit.
We like the range of cams that @Utinator and @68Formula are looking at. If you want to keep VVT and have good low-end torque take a look at the Comp Cams CCA-156-400-13. Specs on it are .556/.568, 210/224, 114+9 with -11* of overlap. With no retarding that would put the .050" IVC at 30* ABDC. This will create excellent throttle response and low-end torque with good power gains. Pair the cam with Comps CCA-26918CS-KIT beehive spring kit and it will be happy out to 6,300+. This cam will require Comps CCA-5456 cam phaser limiter kit.
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- 2007-08: The actuator has a 62* rotation. GM part number NAL-12585994.
- 2008-15: The actuator has a 52* rotation. GM part number NAL-12606358.
For reference check out our How to Delete VVT on an LS Engine article on our OnAllCylinders Blog. This has good info and images about VVT along with the ins and outs of deleting it.
We're all human here at The World's Speed Shop
Last edited by Summitracing; Dec 30, 2022 at 12:52 PM.
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Teching In
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Definitely try to keep the VVT. Unfortunately, there aren't as many cam options when you keep the VVT. Here are a few: https://briantooleyracing.com/camsha...s.html?cat=390
I would probably go with this one: https://briantooleyracing.com/btr-ca...892538136.html
I would probably go with this one: https://briantooleyracing.com/btr-ca...892538136.html
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@Summitracing gave a great hint earlier. A VVT cam cannot be a 3-bolt.
Now, a single bolt can be with/without VVT, AFM/non-AFM, or any combination. So if it's a 3 bolt, it's automatically not VVT, but if it's a single bolt you'll need to research more.
