Blower Cam Advice
Thread Starter
Instructor
Joined: Aug 2019
Posts: 133
Likes: 9
Blower Cam Advice
Im looking @ some small blower cams for my 09 LS3 ( yes I want to keep it small, think Ghost or sleeper Cam )
Street driven ECS Novi 1500 Kit Auto Trans Stock Convertor E85 stock manifolds with CATs, 2.5 inch magnaflow cat back , NO Mufflers. TUNED.
Goals are just sleeper street, Low 11's high 10's retain 100% drivability This car is not my race car, its my grocery getter.
Note please don't suggest a 3800 stall and a huge cam, I may put a 2800-3200 stall in it later but not required for this, I know many of you run larger cams and convertors on the street and enjoy it, and I respect that.
I feel like the second cam would be a turbo grind but would work perfectly for the centrifugal..... ? neither cam has much overlap so it should fly under the radar.
which would be the better cam of these two?
1st Cam
Lift Intake .581 Exhaust .588 Installed @116 Centerline Lobe sep = 116
Dur @ .050 220 228
Valve timing OPEN CLOSE
INTAKE 6- BTDC 46 ATDC
Exhaust 50 BBDC 2- ATDC
2nd Cam
Lift Intake .600 Exhaust .575 Installed @115 3ADV Lobe sep = 115
Dur @ .050 222 230
Valve timing OPEN CLOSE
INTAKE 1- BTDC 43 ATDC
Exhaust 55 BBDC 2- ATDC
Street driven ECS Novi 1500 Kit Auto Trans Stock Convertor E85 stock manifolds with CATs, 2.5 inch magnaflow cat back , NO Mufflers. TUNED.
Goals are just sleeper street, Low 11's high 10's retain 100% drivability This car is not my race car, its my grocery getter.
Note please don't suggest a 3800 stall and a huge cam, I may put a 2800-3200 stall in it later but not required for this, I know many of you run larger cams and convertors on the street and enjoy it, and I respect that.
I feel like the second cam would be a turbo grind but would work perfectly for the centrifugal..... ? neither cam has much overlap so it should fly under the radar.
which would be the better cam of these two?
1st Cam
Lift Intake .581 Exhaust .588 Installed @116 Centerline Lobe sep = 116
Dur @ .050 220 228
Valve timing OPEN CLOSE
INTAKE 6- BTDC 46 ATDC
Exhaust 50 BBDC 2- ATDC
2nd Cam
Lift Intake .600 Exhaust .575 Installed @115 3ADV Lobe sep = 115
Dur @ .050 222 230
Valve timing OPEN CLOSE
INTAKE 1- BTDC 43 ATDC
Exhaust 55 BBDC 2- ATDC
Last edited by JSracing; Jan 12, 2021 at 12:23 AM.
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
Something with ~220/230 duration, ~.600” lift and ~115*LSA with ~+3* advance would be the ticket for a nice street cam which is blower friendly. But, it won’t be a “sleeper”, because it will still have a slight chop to it - how much will depend on idle speed and your tuners ability.
If you want a real sleeper cam, something like the stock LS9 specs would work, but for most folks, that’s not worth the trouble for the hp gain you will see from it.
If you want a real sleeper cam, something like the stock LS9 specs would work, but for most folks, that’s not worth the trouble for the hp gain you will see from it.
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,151
From: SW Florida
2021 C6 of the Year Finalist - Modified
For a positive displacement SC .... The same specs except an LSA of about 119* (since the PD blower makes power right off idle, the 119* LSA would bring that power on at a higher rpm)
Just my opinion ...
Thread Starter
Instructor
Joined: Aug 2019
Posts: 133
Likes: 9
Something with ~220/230 duration, ~.600” lift and ~115*LSA with ~+3* advance would be the ticket for a nice street cam which is blower friendly. But, it won’t be a “sleeper”, because it will still have a slight chop to it - how much will depend on idle speed and your tuners ability.
If you want a real sleeper cam, something like the stock LS9 specs would work, but for most folks, that’s not worth the trouble for the hp gain you will see from it.
If you want a real sleeper cam, something like the stock LS9 specs would work, but for most folks, that’s not worth the trouble for the hp gain you will see from it.
Race Director
Joined: Mar 2011
Posts: 13,262
Likes: 3,151
From: SW Florida
2021 C6 of the Year Finalist - Modified
FYI ...
Here are your LS3 and LS9 cam specs:
LS3
Dur: . 204° / 211°
Lift: . .551” / .525”
LSA: . 117°
ICL: . 120°
Overlap: . -26.5°
LS9
Dur: . 211° / 230°
Lift: . .558” / .562”
LSA: . 122°
ICL: . 122°
Overlap: . -23.5°
Here are your LS3 and LS9 cam specs:
LS3
Dur: . 204° / 211°
Lift: . .551” / .525”
LSA: . 117°
ICL: . 120°
Overlap: . -26.5°
LS9
Dur: . 211° / 230°
Lift: . .558” / .562”
LSA: . 122°
ICL: . 122°
Overlap: . -23.5°
Thread Starter
Instructor
Joined: Aug 2019
Posts: 133
Likes: 9
Thanks yeah i knew them good info for sure though the LS9 is just a bit too mild for what I'm looking for. No doubt it is better than the stock stick.
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Pro
Joined: Sep 2020
Posts: 537
Likes: 169
From: Ogden, Utah
Have you looked into any of the cams made specifically for LS3 centri blower applications? BTR makes two different versions of theirs, but the smaller version works really well and is somewhat docile.
Thread Starter
Instructor
Joined: Aug 2019
Posts: 133
Likes: 9
EDIT i think I found the one you are referring to and I like it.
A&A SUPERCHARGED CAM Specs: 220/230 .581/.591 116+3
Last edited by JSracing; Jan 13, 2021 at 05:37 PM.
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
Ive looked at their stuff but nothing struck me as a fit but i could have missed one, they have alot of cams lol do you have a specific one you know of or a link to one? id love to see their specs.
EDIT i think I found the one you are referring to and I like it.
A&A SUPERCHARGED CAM Specs: 220/230 .581/.591 116+3
EDIT i think I found the one you are referring to and I like it.
A&A SUPERCHARGED CAM Specs: 220/230 .581/.591 116+3
Pro
Joined: Sep 2020
Posts: 537
Likes: 169
From: Ogden, Utah
Ive looked at their stuff but nothing struck me as a fit but i could have missed one, they have alot of cams lol do you have a specific one you know of or a link to one? id love to see their specs.
EDIT i think I found the one you are referring to and I like it.
A&A SUPERCHARGED CAM Specs: 220/230 .581/.591 116+3
EDIT i think I found the one you are referring to and I like it.
A&A SUPERCHARGED CAM Specs: 220/230 .581/.591 116+3
Pro
Joined: Sep 2020
Posts: 537
Likes: 169
From: Ogden, Utah
I run a BTR LS3 Centri Blower cam which works awesome. Makes good power for sure. Sounds great too. I am super happy with it. But it might be a little more than you are wanting
BTR CAMSHAFT - LS3 - CENTRIFUGAL SUPERCHARGED 227/244 .618"/.604" 115+5
BTR CAMSHAFT - LS3 - CENTRIFUGAL SUPERCHARGED 227/244 .618"/.604" 115+5
Last edited by D-Dub2013; Jan 14, 2021 at 08:31 PM.
Le Mans Master
Joined: Apr 2013
Posts: 5,376
Likes: 1,118
I run a BTR LS3 Centri Blower cam which works awesome. Makes good power for sure. Sounds great too. I am super happy with it. But it might be a little more than you are wanting
https://m.youtube.com/watch?v=CKsocPWhpZE
BTR CAMSHAFT - LS3 - CENTRIFUGAL SUPERCHARGED 227/244 .618"/.604" 115+5
https://m.youtube.com/watch?v=CKsocPWhpZE
BTR CAMSHAFT - LS3 - CENTRIFUGAL SUPERCHARGED 227/244 .618"/.604" 115+5
Burning Brakes
Joined: Jan 2011
Posts: 818
Likes: 129
From: San Antonio TX
That is a good bit of lift. How noisy is your valvetrain and what interval are you changing springs? I am currently running a 232/234 .590 112 LSA cam and ours sound very similar. I went H/C/I on the car first but I bought a Maggie kit. I haven't installed it yet but I am debating on whether or not swapping to a blower cam is worth it. Some guys say NA cams work well enough that its not worth the trouble to swap for the power difference between the two. My cam pulls hard in the upper rpm which would suit a Maggie well.
Last edited by csnow; Feb 4, 2021 at 09:18 AM.
Pro
Joined: Sep 2020
Posts: 537
Likes: 169
From: Ogden, Utah
That is a good bit of lift. How noisy is your valvetrain and what interval are you changing springs? I am currently running a 232/234 .590 112 LSA cam and ours sound very similar. I went H/C/I on the car first but I bought a Maggie kit. I haven't installed it yet but I am debating on whether or not swapping to a blower cam is worth it. Some guys say NA cams work well enough that its not worth the trouble to swap for the power difference between the two. My cam pulls hard in the upper rpm which would suit a Maggie well.
Thread Starter
Instructor
Joined: Aug 2019
Posts: 133
Likes: 9
I run a BTR LS3 Centri Blower cam which works awesome. Makes good power for sure. Sounds great too. I am super happy with it. But it might be a little more than you are wanting
https://m.youtube.com/watch?v=CKsocPWhpZE
BTR CAMSHAFT - LS3 - CENTRIFUGAL SUPERCHARGED 227/244 .618"/.604" 115+5
https://m.youtube.com/watch?v=CKsocPWhpZE
BTR CAMSHAFT - LS3 - CENTRIFUGAL SUPERCHARGED 227/244 .618"/.604" 115+5
Pro
Joined: Sep 2020
Posts: 537
Likes: 169
From: Ogden, Utah
So are you going to use the cam they sent you?