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Thinking about adding a cam on my supercharged GS

Old 09-07-2020, 12:47 PM
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LOURDESBELLE
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Default Thinking about adding a cam on my supercharged GS

I’m thinking of adding a cam on my 2013 manual Grandsport. It has an A&A V3Si, Kooks long tube headers and running about 9-10# boost making over 600+rwhp. I don’t race the car at the track at all. Just spirited driving on open roads and highway pulls. Also long trips with the wife—thank goodness for NPP exhaust! Anyways, I’m looking for suggestions from anyone that have done them and using their car in my similar application, like how big a cam,etc. Please post vids of your cammed C6. Thank you, I appreciate it very much.
Old 09-07-2020, 12:55 PM
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D-Dub2013
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I have a BTR LS3 Centri Blower cam in my Novi 1500 Supercharged 2013. It runs awesome. Makes great power and sounds great. I use my car very similar to your uses and it is completely driveable. It shakes a bit at idle and I may have to push the brake a little bit extra when coming to a stop, but it doesn't bother me at at all. Great cam for centri blower. I make just short of 800 rwhp with meth and headers.
Old 09-07-2020, 01:58 PM
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SteveJewels
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I have a 2010 base, LS3, A&A kit V-3 Si, 3.4" pulley, single nozzle meth, 3,200 stall converter, 1 7/8th long tube headers, X pipe, Borla S-Type. Makes 9 or so pounds of boost and 693 WHP on a hot day, pulling a little timing.

I have this cam;
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Last edited by SteveJewels; 09-07-2020 at 01:58 PM.
Old 09-07-2020, 02:21 PM
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Originally Posted by D-Dub2013
I have a BTR LS3 Centri Blower cam in my Novi 1500 Supercharged 2013. It runs awesome. Makes great power and sounds great. I use my car very similar to your uses and it is completely driveable. It shakes a bit at idle and I may have to push the brake a little bit extra when coming to a stop, but it doesn't bother me at at all. Great cam for centri blower. I make just short of 800 rwhp with meth and headers.
Very impressive power to say the least. How big a cam?

Originally Posted by SteveJewels
I have a 2010 base, LS3, A&A kit V-3 Si, 3.4" pulley, single nozzle meth, 3,200 stall converter, 1 7/8th long tube headers, X pipe, Borla S-Type. Makes 9 or so pounds of boost and 693 WHP on a hot day, pulling a little timing.

I have this cam;
How is the drive ability? Still good for long weekend driving? Very impressive power as well! Thank you
Old 09-07-2020, 02:35 PM
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Originally Posted by LOURDESBELLE
Very impressive power to say the least. How big a cam?
The BTR LS3 Blower Cam specs are 227/244 .614"/.595" 115+5. It made the power at 9 psi of boost. BTR makes two different LS3 centri cams, the second version has more lift I believe with the same duration and LSA. It is a bit more aggressive. They definitely work great. Brian Tooley knows his stuff.

Last edited by D-Dub2013; 09-07-2020 at 03:17 PM. Reason: Added link
Old 09-07-2020, 07:20 PM
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LOURDESBELLE
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Sounds great. Plan is to do this cam swap before the Holiday$ gets here. This will definitely be it in the horsepower mods. But then again we always say that, don’t we?lol
Old 09-07-2020, 08:15 PM
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Originally Posted by LOURDESBELLE
Very impressive power to say the least. How big a cam?


How is the drive ability? Still good for long weekend driving? Very impressive power as well! Thank you
In the two days after I bought it I drove it 1,000 miles including a stop at the National Corvette Museum.

I think the drivability is good but I am far more tolerant of lumpy cam behavior and loud exhaust than most.
Old 09-07-2020, 08:42 PM
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Absolutely no reason to over cam a supercharged LS engine. How fast you spin the blower is going to determine how much power you make...not how big and nasty the camshaft is. Unless you just like a nasty sounding LS3, I'd stick to negative overlap. You can have the smooth and efficient along with your fast. Get Pat G to spec you a cam that fits what you're trying to do. I can spec you one that I'm sure would make me happy. Get him to spec you one that makes YOU happy. The forty bucks or so that you pay him will be the best money you'll spend on your Vette.
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Old 09-07-2020, 09:46 PM
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Absolutely correct. I’m not wanting a big cam and I’m not wanting a small cam either. I want a cam that will compliment the blower and make excellent power under the curve as opposed to peak rpm power. I also want that “cammed”sound as well!
Old 09-07-2020, 09:58 PM
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Originally Posted by LOURDESBELLE
Sounds great. Plan is to do this cam swap before the Holiday$ gets here. This will definitely be it in the horsepower mods. But then again we always say that, don’t we?lol
Thanks! Lots of good options out there, but I definitely recommend the one I used, it was specifically designed for our engine and a centri blower and has room to grow!! (Can't go wrong with BTR or Pat G). Well good luck with the project...should make a good Christmas gift!!!

Last edited by D-Dub2013; 09-07-2020 at 10:01 PM. Reason: typo
Old 09-08-2020, 02:26 PM
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Originally Posted by D-Dub2013
I have a BTR LS3 Centri Blower cam in my Novi 1500 Supercharged 2013. It runs awesome. Makes great power and sounds great. I use my car very similar to your uses and it is completely driveable. It shakes a bit at idle and I may have to push the brake a little bit extra when coming to a stop, but it doesn't bother me at at all. Great cam for centri blower. I make just short of 800 rwhp with meth and headers.
Sounds like a bigger convertor would help you alot, i love my car with the 3600 stall.
Old 09-08-2020, 02:28 PM
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Something off the shelf from BTR with their valve train kits would be perfect for you. Is you car auto?
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Old 09-08-2020, 03:19 PM
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Originally Posted by VVVROOMTX
Sounds like a bigger convertor would help you alot, i love my car with the 3600 stall.
Definitely planning on installing a new stall this winter. Was thinking a Circle D 3200. It will definitely help with the cam surge while coming to a stop.
Old 09-08-2020, 03:56 PM
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Great advice as usual from OldMotorHead.

If you can afford an additional ~$750 to you budget, swap your heads out with a set of CNC ported LS3 heads from Texas Speed. They do a performance valve job, too. Many of them running around out there, they (PRC/TSP) do good work. Ads HP without effecting drive ability, and will help lower boost for slightly less load on blower/belt.

Originally Posted by old motorhead
Absolutely no reason to over cam a supercharged LS engine. How fast you spin the blower is going to determine how much power you make...not how big and nasty the camshaft is. Unless you just like a nasty sounding LS3, I'd stick to negative overlap. You can have the smooth and efficient along with your fast. Get Pat G to spec you a cam that fits what you're trying to do. I can spec you one that I'm sure would make me happy. Get him to spec you one that makes YOU happy. The forty bucks or so that you pay him will be the best money you'll spend on your Vette.
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Old 09-11-2020, 09:52 AM
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Originally Posted by D-Dub2013
Definitely planning on installing a new stall this winter. Was thinking a Circle D 3200. It will definitely help with the cam surge while coming to a stop.
Also rolling at 55-60 while in 2nd gear is pretty nasty on the hit
Old 09-11-2020, 10:36 AM
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Another one for the 22x/24x duration cam. Car has an A&A V3 T-trim blower making 6 lbs of boost. Frankenstein-ported LS2 heads and 402 ci bottom end. Car makes 673 rwhp, idles about like D-dub's car, and has tons of midrange torque. I usually reverse out of parking spaces by just easing out the clutch, no gas needed.



Old 09-17-2020, 10:04 AM
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I have a 220/240, 0.600/0.600 lift, 117+2, I think, in mine. It's been a while.. but overall feels like I picked up a decent amount with it. If I were doing it over I'd probably go a tad more aggressive on the LSA so it sounds an itty bit more cam'd but I don't drive mine that much any more so it's easier to say that. Something in that ballpark will do what you're wanting though. I use BTR 660 springs as well, should last a long time like that.

Last edited by schpenxel; 09-17-2020 at 10:04 AM.

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Old 09-17-2020, 10:16 AM
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I have a Jam Cam for sale if interested.. I ran it with cathedral and square ports and it made more power with the square ports. PM me if interested.
Old 09-23-2020, 02:56 PM
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Thanks for all your suggestions. I will be going to a different direction at this time. Instead of a cam swap, I am looking into utilizing E85 fuel. There seems to be great, amazing results with E85 especially in boosted application. So this is what I will do now. I will probably install a cam in the future. Thank you all, Corvette Forum!
Old 09-24-2020, 11:25 AM
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Originally Posted by LOURDESBELLE
Thanks for all your suggestions. I will be going to a different direction at this time. Instead of a cam swap, I am looking into utilizing E85 fuel. There seems to be great, amazing results with E85 especially in boosted application. So this is what I will do now. I will probably install a cam in the future. Thank you all, Corvette Forum!
If you know you'll eventually install a cam in addition to going flex fuel, it would be cheaper to do it all at once. That way you only have to pay for one tune.

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