Check out the NEWEST Summit Pro LS Cams
Andrew
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From: Ohio, Georgia, Nevada, Texas
@Abs suggested the SUM-8728R1 as an option which we would consider as well. It’s slightly larger, providing more power and torque across the board, and still works with a stock converter. However, it's -1° IVO means the idle won’t be as smooth as the 8719R1. You’d also need to upgrade to .600" lift beehives, but since you’re already upgrading, it could be worth it.
If you value a smooth idle, go with the 8719R1. If you want more performance and don’t mind a slightly rougher idle, the 8728R1 could be the better choice.
AFM and VVT would need deleting for either of these cams. Your engine might have one or both systems depending on its VIN or RPO code. If you're absolutely sure you need to delete both, you're good to go. If not, you can confirm using our LS RPO Code Database with the 8th digit of your VIN or your RPO code. Once you're ready, we offer delete kits from a variety of trusted vendors to help you get the job done.
- AFM/DOD delete kits
- VVT delete kits
Let us know if we can be of any further assistance. We'll be happy to help!
Thread Starter
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Joined: Jan 2008
Posts: 2,233
Likes: 1,521
From: Ohio, Georgia, Nevada, Texas
Hey @Kfxguy,
We haven’t seen you around in a bit—nice to see you back!
Back around 2021, most of the standard Pro LS Cam part numbers were discontinued. The R1 was added to the end of the number to mark the updated versions.
We worked closely with our lobe designer and found small but effective tweaks. While we can't share the proprietary details, these changes made our cams even easier on the valvetrain than they already were and extended the RPM range slightly.
Let us know if you have any questions!
We haven’t seen you around in a bit—nice to see you back!
Back around 2021, most of the standard Pro LS Cam part numbers were discontinued. The R1 was added to the end of the number to mark the updated versions.
We worked closely with our lobe designer and found small but effective tweaks. While we can't share the proprietary details, these changes made our cams even easier on the valvetrain than they already were and extended the RPM range slightly.
Let us know if you have any questions!
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Joined: May 2023
Posts: 401
Likes: 134
From: Franconia, PA
Hey @Kfxguy,
We haven’t seen you around in a bit—nice to see you back!
Back around 2021, most of the standard Pro LS Cam part numbers were discontinued. The R1 was added to the end of the number to mark the updated versions.
We worked closely with our lobe designer and found small but effective tweaks. While we can't share the proprietary details, these changes made our cams even easier on the valvetrain than they already were and extended the RPM range slightly.
Let us know if you have any questions!
We haven’t seen you around in a bit—nice to see you back!
Back around 2021, most of the standard Pro LS Cam part numbers were discontinued. The R1 was added to the end of the number to mark the updated versions.
We worked closely with our lobe designer and found small but effective tweaks. While we can't share the proprietary details, these changes made our cams even easier on the valvetrain than they already were and extended the RPM range slightly.
Let us know if you have any questions!
Will any be smaller with intake durations in the 21X or 22X where piston valve reliefs wont need to be cut?
Hey @Kfxguy,
We haven’t seen you around in a bit—nice to see you back!
Back around 2021, most of the standard Pro LS Cam part numbers were discontinued. The R1 was added to the end of the number to mark the updated versions.
We worked closely with our lobe designer and found small but effective tweaks. While we can't share the proprietary details, these changes made our cams even easier on the valvetrain than they already were and extended the RPM range slightly.
Let us know if you have any questions!
We haven’t seen you around in a bit—nice to see you back!
Back around 2021, most of the standard Pro LS Cam part numbers were discontinued. The R1 was added to the end of the number to mark the updated versions.
We worked closely with our lobe designer and found small but effective tweaks. While we can't share the proprietary details, these changes made our cams even easier on the valvetrain than they already were and extended the RPM range slightly.
Let us know if you have any questions!
I’ve been popping in and out here and there on the website, mainly in the trans section.
I’ve been perusing the summit website considering selling my spare motor to build a destroked ls2 or ls3 and putting my built 5.3 on the stand as a spare. That motor is still holding up. It’s been put through its paces for sure. I think it has around 40k miles on it now. It’s seen 20+psi boost countless times. I’ve driven it daily off an on for the past few years. Only issue I had was right after getting it together I cheaped out on valves and put some $50 junks in there instead of ferrea and I tuliped one. Ferreas went in and I haven’t had an issue since. Still have the same spark plugs. This is the pro ls bottom end engine that you guys helped me out on, still running the ghost cam too. After pricing stuff out, I’m probably gonna hold off on building another engine. I do have a set of pro ls pistons for my 5.7, all I need is rods and I could put that motor together.
thanks for the heads up on the cam part numbers. I’m gonna pick one out for my son’s truck and do a mild one while the truck is apart. Thx
Thread Starter
LS1Tech Sponsor
Joined: Jan 2008
Posts: 2,233
Likes: 1,521
From: Ohio, Georgia, Nevada, Texas
I’ve been popping in and out here and there on the website, mainly in the trans section.
I’ve been perusing the summit website considering selling my spare motor to build a destroked ls2 or ls3 and putting my built 5.3 on the stand as a spare. That motor is still holding up. It’s been put through its paces for sure. I think it has around 40k miles on it now. It’s seen 20+psi boost countless times. I’ve driven it daily off an on for the past few years. Only issue I had was right after getting it together I cheaped out on valves and put some $50 junks in there instead of ferrea and I tuliped one. Ferreas went in and I haven’t had an issue since. Still have the same spark plugs. This is the pro ls bottom end engine that you guys helped me out on, still running the ghost cam too. After pricing stuff out, I’m probably gonna hold off on building another engine. I do have a set of pro ls pistons for my 5.7, all I need is rods and I could put that motor together.
thanks for the heads up on the cam part numbers. I’m gonna pick one out for my son’s truck and do a mild one while the truck is apart. Thx
I’ve been perusing the summit website considering selling my spare motor to build a destroked ls2 or ls3 and putting my built 5.3 on the stand as a spare. That motor is still holding up. It’s been put through its paces for sure. I think it has around 40k miles on it now. It’s seen 20+psi boost countless times. I’ve driven it daily off an on for the past few years. Only issue I had was right after getting it together I cheaped out on valves and put some $50 junks in there instead of ferrea and I tuliped one. Ferreas went in and I haven’t had an issue since. Still have the same spark plugs. This is the pro ls bottom end engine that you guys helped me out on, still running the ghost cam too. After pricing stuff out, I’m probably gonna hold off on building another engine. I do have a set of pro ls pistons for my 5.7, all I need is rods and I could put that motor together.
thanks for the heads up on the cam part numbers. I’m gonna pick one out for my son’s truck and do a mild one while the truck is apart. Thx
If you do decide to move forward with the destroked LS2/LS3 build down the road, we’d love to help you spec out the right combo. And it sounds like you’re already close to having everything you need for the 5.7—just a set of rods away!
That’s awesome that your son’s getting a mild cam setup while the truck’s apart. Let us know what kind of goals you have for it, and we’d be happy to help make sure he gets the best option for what he’s after.
Appreciate you checking in, and as always, let us know if we can help with anything!
Thread Starter
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Joined: Jan 2008
Posts: 2,233
Likes: 1,521
From: Ohio, Georgia, Nevada, Texas