New Summit Pro LS cams are here! Torkinators and T-6/Twin Turbo cams
#61
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Thank you for checking in on the thread for a cam recommendation. It sounds like you have a good background with our stage 2 turbo cam SUM-8706R1 so you know what to expect from it. It would be a good fit for this current build. Although, we think you'll be happier all-around with the new stage 3 twin-turbo SUM-8722R1 cam here. Given the larger cubes topped off with some great heads and the nice set of twins, the 8722R1 would complement the combo very well. It spools the quickest out of our twin-turbo cams. You can expect a strong mid-range and good top-end with this cam. Pair it with the Trickflow TFS-2500286P .660" lift duals and it'll be happy out to 7,100 plus. We would recommend 3:55+ gears for use with this cam. The 6-speed will help if you're in the 3:20-3:40 range but we'd prefer 3:55+ gears.
The 8722R1 will get along just fine for daily driving duties with your combo. When you're feeling sporty and want to take it to the track it'll be happy to sing out into the 7,000+ range.
The 8722R1 will get along just fine for daily driving duties with your combo. When you're feeling sporty and want to take it to the track it'll be happy to sing out into the 7,000+ range.
#62
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New guy who has been lurking for awhile reading the Summit cam threads.
I have a 2012 Silverado CC 4x4 with the L9H 6.2, 6L80, and 3.42 gears. I don't tow a lot but would like a cam that didn't give much up at lower rpm. I plan on a convertor swap and long tube headers, and VVT delete. I was wondering if a 8728 or the 8720 would be a good fit or possibly a cam I'm over looking.
I would like a high lift (.600") cam to take advantage of the rec port heads.
FYI: I plan on doing the ls2 style tensioner, dual pac springs, hardened oversize pushrods, dual roller timing set, and new lifters with the cam swap.
Thanks
I have a 2012 Silverado CC 4x4 with the L9H 6.2, 6L80, and 3.42 gears. I don't tow a lot but would like a cam that didn't give much up at lower rpm. I plan on a convertor swap and long tube headers, and VVT delete. I was wondering if a 8728 or the 8720 would be a good fit or possibly a cam I'm over looking.
I would like a high lift (.600") cam to take advantage of the rec port heads.
FYI: I plan on doing the ls2 style tensioner, dual pac springs, hardened oversize pushrods, dual roller timing set, and new lifters with the cam swap.
Thanks
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Onto your 2008 BMW 750LI with the boosted LH8 5.3 swap. The SUM-8728R1 would be a great cam for the swap. That is a big ol' sedan to be lugging around. The early 33* IVC of the 8728R1 will help get the 750LI up and moving. Combining that with your 8-speed auto and boost will make this a great combo. It will be easy to get along with as a daily that could surprise some unexpecting folks! Pair the 8728R1 with our SUM-174004 .600" lift beehives and it'll be happy out to 6,500+.
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Hey folks,
We wanted to let you know about our Pro LS cam GIVEAWAY we currently have running for LS1Tech members! Go check it out in our **GIVEAWAY** Summit Racing Pro LS Cam thread. Get entered in the GIVEAWAY thread for your chance to win a Pro LS cam for FREE or a gift card of equal value! We're accepting entries up until Monday, May 9th, 2022 at Midnight, Pacific Standard Time. Good luck folks![Burnout](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_burnout.gif)
We wanted to let you know about our Pro LS cam GIVEAWAY we currently have running for LS1Tech members! Go check it out in our **GIVEAWAY** Summit Racing Pro LS Cam thread. Get entered in the GIVEAWAY thread for your chance to win a Pro LS cam for FREE or a gift card of equal value! We're accepting entries up until Monday, May 9th, 2022 at Midnight, Pacific Standard Time. Good luck folks
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#65
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New guy who has been lurking for awhile reading the Summit cam threads.
I have a 2012 Silverado CC 4x4 with the L9H 6.2, 6L80, and 3.42 gears. I don't tow a lot but would like a cam that didn't give much up at lower rpm. I plan on a convertor swap and long tube headers, and VVT delete. I was wondering if a 8728 or the 8720 would be a good fit or possibly a cam I'm over looking.
I would like a high lift (.600") cam to take advantage of the rec port heads.
FYI: I plan on doing the ls2 style tensioner, dual pac springs, hardened oversize pushrods, dual roller timing set, and new lifters with the cam swap.
Thanks
I have a 2012 Silverado CC 4x4 with the L9H 6.2, 6L80, and 3.42 gears. I don't tow a lot but would like a cam that didn't give much up at lower rpm. I plan on a convertor swap and long tube headers, and VVT delete. I was wondering if a 8728 or the 8720 would be a good fit or possibly a cam I'm over looking.
I would like a high lift (.600") cam to take advantage of the rec port heads.
FYI: I plan on doing the ls2 style tensioner, dual pac springs, hardened oversize pushrods, dual roller timing set, and new lifters with the cam swap.
Thanks
You'll want some upgraded pushrods. With our .600" lift cams, we typically see a 7.400" or 7.425" pushrod used. Things can vary so we always recommend measuring for pushrod length before purchasing pushrods. If you don't already have a pushrod length checker we offer the Trickflow TFS-9501. For pushrods, we recommend a minimum of a 5/16" Chromoly pushrod with a .080" wall. You can typically find a set of 16 for around $100. From there you can get into a thicker wall or larger diameter pushrod. For excellent stability and strength check out our 11/32" HDR pushrods with a .120" wall. These have 25% less stress and 28% less deflection than a typical 5/16" x .080" wall Chromoly pushrod.
We can help you out with the VVT delete. Check out our CMB-09-0027 VVT delete combo. That comes with a 3-bolt 4x cam gear. You could purchase individual VVT delete components from the Kit/Combo Contents tab. Regarding a timing set, we'd recommend a single roller vs. a double roller chain. The double roller chains tend to have clearance issues with the timing cover.We'd recommend a timing set like our SUM-G6647-4X or Cloyes CLO-9-3672TX9.Either of those timing sets would get you the 3-bolt 4X cam gear you will need to delete the VVT and work with a 3-bolt aftermarket cam.For lifters, we'd recommend our SUM-HTLSKIT3. This comes with Morel 7717 drop-in lifters, new lifter trays, and lifter tray bolts. When going with dual springs we typically recommend a trunnion upgrade for the rockers. We offer both the bushing and captured needle-bearing options in our own brand. We also carry the popular BTR V2 captured needle-bearing trunnion upgraded trunnions. The LS2 timing chain dampener would be GM part number NAL-12588670.
This should help you get the ball rolling with your cam swap. Let us know if we can be of any further assistance. You can reply to the thread or shoot us a PM. We'll be happy to help!
#66
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Summit, I have a 2000 silverado 2500 non HD 4x4 6.0 nv4500 5speed, 3.73 gears, 33 inch tires. This is not a toy, all tow/work truck. 4th gear towing 60 is around 2300 rpm, 5th gear cruise is around 1600 or so. I am after TORQUE for towing; being that it is a manual transmission, there is obviously no torque converter to multiply torque or help down low.
The plan is probably 706 heads on the lq4. Which cam would you recommend for absolute max towing in a truck that will likely never see 6k rpm?
The plan is probably 706 heads on the lq4. Which cam would you recommend for absolute max towing in a truck that will likely never see 6k rpm?
Last edited by jonnyboy; 01-04-2023 at 09:00 PM. Reason: Spelling
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Abs (04-22-2024)
#71
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Who grinds them shouldn't be proprietary information especially if Summit themselves is doing it. And both Cam Motion & TSP whom I've been buying camshafts from for 20 years have no problems sharing their heat treat process or any other details about their product. I'm just curious if these cams hold up and don't fall apart in 10k miles like all the Comp 5150 stuff does.
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Check out this article on the manufacturing process of our Pro LS cams. We share quite a bit of info and images going from the 5150 core all the way through final testing.
There is a vast amount of testimonials all throughout the interwebs of happy customers using our Pro LS cams. There are many who have swapped Pro LS cams in more than one of their projects! Forgive us for we may be biased, but that sounds like our customers trust the quality and value of the Pro LS cams for their projects
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#74
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We appreciate your interest in the manufacturing process of our Pro LS cams. Per our private-label agreement, we cannot disclose the manufacturer. We can tell you that these are 5150 cores and are 100% made in the USA!
Check out this article on the manufacturing process of our Pro LS cams. We share quite a bit of info and images going from the 5150 core all the way through final testing.
There is a vast amount of testimonials all throughout the interwebs of happy customers using our Pro LS cams. There are many who have swapped Pro LS cams in more than one of their projects! Forgive us for we may be biased, but that sounds like our customers trust the quality and value of the Pro LS cams for their projects![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
Check out this article on the manufacturing process of our Pro LS cams. We share quite a bit of info and images going from the 5150 core all the way through final testing.
There is a vast amount of testimonials all throughout the interwebs of happy customers using our Pro LS cams. There are many who have swapped Pro LS cams in more than one of their projects! Forgive us for we may be biased, but that sounds like our customers trust the quality and value of the Pro LS cams for their projects
![Happy](https://ls1tech.com/forums/images/smilies/LS1Tech/gr_stretch.gif)
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#76
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Hot off the presses comes the "Say it ain't so, Joe!" My 2000 C5 A4 Vert has an LS7 in it with the original PCM, .605" lift, 232/250 Cam Motion 112° LSA, which is a 17° overlap cam. I love it, it gets 23mpg on the highway. Very little bucking, none at all after 48mph, especially with just a very slight acceleration. There are guys who tune, and Tuners who know what they're doing. It's like the Olympics!! Most everyone is an also ran, with only the top 3 getting a medal. Even then, there are differences between Gold, Silver, and Bronze. I'm not here spewing BS, as in it "It drives like stock". But it's not bad at all. I'm sure the 427 cubes help......
I understand the Scavenging effect that is spoken of with a wide LSA and overlap. I can Imagine at 1300-1500 RPM the air is not making it into each chamber at the same rate especially if one was having some bad valve events?
Last edited by Guy with a Chevy; 07-17-2024 at 11:00 PM.