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Summit ls turbo cams?

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Old Feb 28, 2019 | 10:40 PM
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Default Summit ls turbo cams?

Anyone use them yet? Looking at a stage 2 on a 799 5.3 with a vs billet 78/75
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Old Mar 1, 2019 | 05:55 AM
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I have the stage 2, haven't got it running yet, but it did degree in right on the money.
Quality looks good, about all I can offer. Using a VS 83/75.
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Old Mar 1, 2019 | 06:47 PM
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What are you building?
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Old Mar 2, 2019 | 05:47 AM
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86 shortbed, 6.0, LS3 heads, intake, 80E trans. Prob a month away from start up.
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Old Mar 2, 2019 | 08:46 AM
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Pretty sure Summit=Elgin exact same specs for sloppy stage 2. I went elgin since it was cheaper and like above it degreed in perfect . Mines a 4.8.
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Old Mar 2, 2019 | 10:06 AM
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Originally Posted by epfatboy
Pretty sure Summit=Elgin exact same specs for sloppy stage 2. I went elgin since it was cheaper and like above it degreed in perfect . Mines a 4.8.
No, Summit started grinding their own LS cams with their own "specs". There is a guy on Facebook that says he's the engineer in charge of designing these cams. The "stage 2" turbo cam is nearly identical to the LJMS stage 2 cam in spec. I put one of the summit cams in a 6L in my c10 but it's only NA right now. Will get a pair of BW S359's this summer but it's making 375 wheel hp on my dyno right now.

Last edited by kbracing96; Mar 17, 2019 at 10:46 AM.
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Old Mar 2, 2019 | 02:32 PM
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is this the one ? https://www.summitracing.com/parts/sum-8706 ... thats a good price
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Old Mar 2, 2019 | 02:34 PM
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Old Mar 2, 2019 | 06:46 PM
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Yes the summit cams are ground by comp cams, it was a big secret until they started advertising cut by comp. Im looking at the exact same one.
I talked to a tech guy at summit today trying to find out what lobes are used but either they are not saying or honestly don't know. I personally would like to know before i purchase one.
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Old Mar 7, 2019 | 10:39 AM
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I just had the stage 1 installed in my C6 LS3 (with an APS kit) right now. It fell right in place as far as location, and was able to start, run and drive immediately on my previous calibration (Virtual VE, MAF, and fuel injector models were within 2% before). I will dial in the part throttle VVE stuff for the cam change next week on the dyno. The plan is to have a sleeper that also passes actual tailpipe emissions testing.
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Old Mar 7, 2019 | 01:34 PM
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I sold off my SS2 for the summit turbo cam for one of my projects. The specs looked much better for turbo application compared to the SS2.
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Old Mar 8, 2019 | 09:33 AM
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Originally Posted by turbolx
I just had the stage 1 installed in my C6 LS3 (with an APS kit) right now. It fell right in place as far as location, and was able to start, run and drive immediately on my previous calibration (Virtual VE, MAF, and fuel injector models were within 2% before). I will dial in the part throttle VVE stuff for the cam change next week on the dyno. The plan is to have a sleeper that also passes actual tailpipe emissions testing.
What was the previous cam?
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Old Mar 8, 2019 | 10:12 PM
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Some of the Summit Truck cams look pretty good as well.

Stage 1 Truck High Lift: SUM-8719: 550/550 - 209/217 112+1

Stage 2 Truck: SUM-8701: 523/524 - 218/227 112+2

Stage 3 Truck: SUM-8713: .545/.545 - 222/231 112+5

Last edited by topbrent; Mar 8, 2019 at 10:38 PM.
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Old Mar 9, 2019 | 12:00 PM
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Does anyone know why the Summit Stage 1 turbo cam is no longer showing up on their website?

Andrew
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Old Mar 16, 2019 | 09:29 PM
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Looks like they pulled it however if you do a search at summit the last cam on the page comes up as a turbo cam stg one but its not and has a different part number. I assume they reverted to a NA cam as their new stg one unless they never had one and we never noticed.
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Old Mar 19, 2019 | 09:35 AM
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Originally Posted by Project GatTagO
Does anyone know why the Summit Stage 1 turbo cam is no longer showing up on their website?

Andrew
They moved it under a different name, but it's still available. They now call it the "Stage 1 Ghost Cam". I have it in my TT C6 right now.
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Old Mar 19, 2019 | 09:39 AM
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Originally Posted by slowride
What was the previous cam?
I changed from the stock LS3 camshaft. Like I said, my goal is not max power, but rather emissions compliance (with tailpipe numbers to back it up) with perfect street manners and a modest power bump. I mapped all the part throttle and high load changes on the dyno last week (tire slip, so no WOT curve yet) and can confirm that it idles fine at 700rpm. Throttle response even below 1500rpm is excellent. Power now carries to 6400 where it used to peak at 6000.
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Old Mar 19, 2019 | 01:26 PM
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Originally Posted by topbrent
Some of the Summit Truck cams look pretty good as well.

Stage 1 Truck High Lift: SUM-8719: 550/550 - 209/217 112+1

Stage 2 Truck: SUM-8701: 523/524 - 218/227 112+2

Stage 3 Truck: SUM-8713: .545/.545 - 222/231 112+5
I just put the Stage I high lift in my truck over the weekend. Runs much better!

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Old Mar 19, 2019 | 03:04 PM
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Originally Posted by 408GT
I just put the Stage I high lift in my truck over the weekend. Runs much better!
do you got a vid of it idling ?
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Old Mar 19, 2019 | 03:18 PM
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I have a stage one turbo ghost cam in mine. idles nice. drives perfect. seems to have more power than the BTR stage 2 NA cam i had. I have an idle video if anyone is interested.
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