Btr Truck Torque Cam
Popular Reply
Feb 7, 2020, 12:00 PM
LS1Tech Sponsor
Joined: Jan 2008
Posts: 462
Likes: 243
From: Ohio, Georgia, Nevada, Texas
OP, we see that is the Crane CRN-1449511. For a tow/torque cam in a 6.0 we like this better than the BTR torque cam. The Crane has an IVC of 32* ABDC. We need to correct ourselves on the IVC of the BTR cam. Its lobe separation is 111-1 so its retarded 1 degree. This puts the IVC at 33. The same as our Summit cam. The BTR is smaller than what we would like to recommend for a 6.0. The 6.0 displacement will eat up some duration so don't let the little higher duration of the Crane and our cam scare you. Valve events are similar between the three, and they would share the same characteristics. All things considered, these are still small cams for a 6.0.
For all 3 cams. They will have a smooth idle. They are going to have great driveability and efficiency. They are going to make torque down low.
Let's compare the 3 tow cams being discussed with individual valve events. To pick a "tow cam" for a 6.0 tow pig we would go with the Summit or the Crane. It's not due to sales, we sell all 3. This is due to being ever so slightly larger. We will compare all three for the community and you to decide on a tow cam.
BTR torque cam: Current retail price of $389.00.
.507/.507, 202/202, 111-1 with -20 overlap.
-IVC: 33 ABDC
-IVO: -11 BTDC
-EVO: 31 BBDC
-EVC: -9 ATDC
Summit tow/rv cam: Current retail price of $259.99.
.500/.500, 205/217, 112+2 with -12 overlap.
-IVC: 33 ABDC
-IVO: -8 BTDC
-EVO: 42 BBDC
-EVC: -5 ATDC
Crane truckmax cam: Current retail price of $411.25.
.500/.500, 206/214, 114+5 with -18 overlap.
-IVC: 32 ABDC
-IVO: -6 BTDC
-EVO: 46 BBDC
-EVC: -12 ATDC
KEY:
IVC= Intake Valve Closing
IVO= Intake Valve Opening
EVO= Exhaust Valve Opening
EVC= Exhaust Valve Closing
BTDC= Before Top Dead Center
ATDC= After Top Dead Center
BBDC= Before Bottom Dead Center
ABDC= After Bottom Dead center
IVC: Is building compression and torque down low with closing the valve early. Or using inertial charge longer after BDC and closing the valve later to increase power higher in the rpm range.
IVO: Is basically idle quality..the earlier you open the intake, the more air you're taking in on the downstroke (at the expense of idle vacuum).
EVO: Is blowdown. Most of the blowdown occurs even before BDC because of high residual cylinder pressure. Earlier = better evacuation and less pumping loss on the piston upstroke at high speed vs. slight loss of pressure on piston during last degrees of power stroke for low end
EVC: Is in conjunction with overlap. Most useful with open headers, equal length headers, and primary lengths wave tuned to the intake runner and rpm. We don't place much emphasis on extending this event later as it produces reversion with street performance exhaust systems.
We are not here to just sell parts and leave it be. We are here to actually help the community. We want to help everyone gain knowledge and be more experienced buyers. We are gaining knowledge at the same time reading what the community is saying and interacting with everyone.
Sorry for the long and extensive post but hopefully it will help open some eyes when it comes time to select a camshaft. Keep on truckin.
For all 3 cams. They will have a smooth idle. They are going to have great driveability and efficiency. They are going to make torque down low.
Let's compare the 3 tow cams being discussed with individual valve events. To pick a "tow cam" for a 6.0 tow pig we would go with the Summit or the Crane. It's not due to sales, we sell all 3. This is due to being ever so slightly larger. We will compare all three for the community and you to decide on a tow cam.
BTR torque cam: Current retail price of $389.00.
.507/.507, 202/202, 111-1 with -20 overlap.
-IVC: 33 ABDC
-IVO: -11 BTDC
-EVO: 31 BBDC
-EVC: -9 ATDC
Summit tow/rv cam: Current retail price of $259.99.
.500/.500, 205/217, 112+2 with -12 overlap.
-IVC: 33 ABDC
-IVO: -8 BTDC
-EVO: 42 BBDC
-EVC: -5 ATDC
Crane truckmax cam: Current retail price of $411.25.
.500/.500, 206/214, 114+5 with -18 overlap.
-IVC: 32 ABDC
-IVO: -6 BTDC
-EVO: 46 BBDC
-EVC: -12 ATDC
KEY:
IVC= Intake Valve Closing
IVO= Intake Valve Opening
EVO= Exhaust Valve Opening
EVC= Exhaust Valve Closing
BTDC= Before Top Dead Center
ATDC= After Top Dead Center
BBDC= Before Bottom Dead Center
ABDC= After Bottom Dead center
IVC: Is building compression and torque down low with closing the valve early. Or using inertial charge longer after BDC and closing the valve later to increase power higher in the rpm range.
IVO: Is basically idle quality..the earlier you open the intake, the more air you're taking in on the downstroke (at the expense of idle vacuum).
EVO: Is blowdown. Most of the blowdown occurs even before BDC because of high residual cylinder pressure. Earlier = better evacuation and less pumping loss on the piston upstroke at high speed vs. slight loss of pressure on piston during last degrees of power stroke for low end
EVC: Is in conjunction with overlap. Most useful with open headers, equal length headers, and primary lengths wave tuned to the intake runner and rpm. We don't place much emphasis on extending this event later as it produces reversion with street performance exhaust systems.
We are not here to just sell parts and leave it be. We are here to actually help the community. We want to help everyone gain knowledge and be more experienced buyers. We are gaining knowledge at the same time reading what the community is saying and interacting with everyone.
Sorry for the long and extensive post but hopefully it will help open some eyes when it comes time to select a camshaft. Keep on truckin.
Feb 5, 2020 | 02:54 PM
#6
LS1Tech Sponsor
Joined: Jan 2008
Posts: 462
Likes: 243
From: Ohio, Georgia, Nevada, Texas
OP, we agree with the community that it's on the small side for a 6.0. We do offer this BTR tow cam at Summit Racing. It is part number BTC-30202111. If this was 100% a tow rig it would be ok. More info about the use of the truck and your goals of the cam swap would be helpful.
We can give you a couple recommendations based on the info you've provided thus far.
We have our version of a tow/rv cam. That is the stage 1 tow/rv SUM-8718. Specs on it are .500/.500, 205/217, 112+2. It has -12* of overlap so it's great for driveability and efficiency. It's on the small side of what we would typically recommend for a 6.0. Although, if you're primarily towing with this truck it would fit the bill for that. This can have a smooth idle or slight lope depending on idle speed. This will have great off-idle torque. It will have better torque and power through the entire rpm range over the stock cam. This will work with stock springs and stock torque converter.
Something we think would be better suited for a 6.0 would be the stage 1 high lift SUM-8719. Specs are .550/.550, 209/217, 112+1. It has -10* of overlap so still good for driveability and efficiency. This would be great for a daily driver tow rig with a 6.0. It will have a smooth idle or noticeable lope depending on idle speed. This will have good off-idle torque with a very good mid-range and top-end. With the increased lift, it will promote better torque and power across the range over the stage 1 tow cam. It will require a spring upgrade. Budget-friendly LS6 NAL-12499224 are well suited for this cam. A 2500+ rpm stall converter would be a plus. Although it's not at all required.
We can help with the install. We have a cam swap install kit. That is part number CMB-09-0029. This includes the timing cover gasket, water pump gaskets, oil pump o-rings, LS2 timing chain, valve cover gaskets, and harmonic balancer bolt.
This gives you a couple of options to look at. With more info about the use of the truck and your goals, we could fine-tune our recommendations.
We can give you a couple recommendations based on the info you've provided thus far.
We have our version of a tow/rv cam. That is the stage 1 tow/rv SUM-8718. Specs on it are .500/.500, 205/217, 112+2. It has -12* of overlap so it's great for driveability and efficiency. It's on the small side of what we would typically recommend for a 6.0. Although, if you're primarily towing with this truck it would fit the bill for that. This can have a smooth idle or slight lope depending on idle speed. This will have great off-idle torque. It will have better torque and power through the entire rpm range over the stock cam. This will work with stock springs and stock torque converter.
Something we think would be better suited for a 6.0 would be the stage 1 high lift SUM-8719. Specs are .550/.550, 209/217, 112+1. It has -10* of overlap so still good for driveability and efficiency. This would be great for a daily driver tow rig with a 6.0. It will have a smooth idle or noticeable lope depending on idle speed. This will have good off-idle torque with a very good mid-range and top-end. With the increased lift, it will promote better torque and power across the range over the stage 1 tow cam. It will require a spring upgrade. Budget-friendly LS6 NAL-12499224 are well suited for this cam. A 2500+ rpm stall converter would be a plus. Although it's not at all required.
We can help with the install. We have a cam swap install kit. That is part number CMB-09-0029. This includes the timing cover gasket, water pump gaskets, oil pump o-rings, LS2 timing chain, valve cover gaskets, and harmonic balancer bolt.
This gives you a couple of options to look at. With more info about the use of the truck and your goals, we could fine-tune our recommendations.
Feb 5, 2020 | 03:36 PM
#7
Thread Starter
Teching In
Joined: Aug 2019
Posts: 15
Likes: 1
OP, we agree with the community that it's on the small side for a 6.0. We do offer this BTR tow cam at Summit Racing. It is part number BTC-30202111. If this was 100% a tow rig it would be ok. More info about the use of the truck and your goals of the cam swap would be helpful.
We can give you a couple recommendations based on the info you've provided thus far.
We have our version of a tow/rv cam. That is the stage 1 tow/rv SUM-8718. Specs on it are .500/.500, 205/217, 112+2. It has -12* of overlap so it's great for driveability and efficiency. It's on the small side of what we would typically recommend for a 6.0. Although, if you're primarily towing with this truck it would fit the bill for that. This can have a smooth idle or slight lope depending on idle speed. This will have great off-idle torque. It will have better torque and power through the entire rpm range over the stock cam. This will work with stock springs and stock torque converter.
Something we think would be better suited for a 6.0 would be the stage 1 high lift SUM-8719. Specs are .550/.550, 209/217, 112+1. It has -10* of overlap so still good for driveability and efficiency. This would be great for a daily driver tow rig with a 6.0. It will have a smooth idle or noticeable lope depending on idle speed. This will have good off-idle torque with a very good mid-range and top-end. With the increased lift, it will promote better torque and power across the range over the stage 1 tow cam. It will require a spring upgrade. Budget-friendly LS6 NAL-12499224 are well suited for this cam. A 2500+ rpm stall converter would be a plus. Although it's not at all required.
We can help with the install. We have a cam swap install kit. That is part number CMB-09-0029. This includes the timing cover gasket, water pump gaskets, oil pump o-rings, LS2 timing chain, valve cover gaskets, and harmonic balancer bolt.
This gives you a couple of options to look at. With more info about the use of the truck and your goals, we could fine-tune our recommendations.
We can give you a couple recommendations based on the info you've provided thus far.
We have our version of a tow/rv cam. That is the stage 1 tow/rv SUM-8718. Specs on it are .500/.500, 205/217, 112+2. It has -12* of overlap so it's great for driveability and efficiency. It's on the small side of what we would typically recommend for a 6.0. Although, if you're primarily towing with this truck it would fit the bill for that. This can have a smooth idle or slight lope depending on idle speed. This will have great off-idle torque. It will have better torque and power through the entire rpm range over the stock cam. This will work with stock springs and stock torque converter.
Something we think would be better suited for a 6.0 would be the stage 1 high lift SUM-8719. Specs are .550/.550, 209/217, 112+1. It has -10* of overlap so still good for driveability and efficiency. This would be great for a daily driver tow rig with a 6.0. It will have a smooth idle or noticeable lope depending on idle speed. This will have good off-idle torque with a very good mid-range and top-end. With the increased lift, it will promote better torque and power across the range over the stage 1 tow cam. It will require a spring upgrade. Budget-friendly LS6 NAL-12499224 are well suited for this cam. A 2500+ rpm stall converter would be a plus. Although it's not at all required.
We can help with the install. We have a cam swap install kit. That is part number CMB-09-0029. This includes the timing cover gasket, water pump gaskets, oil pump o-rings, LS2 timing chain, valve cover gaskets, and harmonic balancer bolt.
This gives you a couple of options to look at. With more info about the use of the truck and your goals, we could fine-tune our recommendations.
Trending Topics
Feb 5, 2020 | 07:36 PM
#8
There's an increased chance of detonation at low rpm with higher cylinder pressures. High load, high compression, and low rpm add up to knocking. I assume a 4l80e with the big, heavy, stock converter, too?
Call Comp for a recommendation. They will ask you everything, but emphasize that you don't care about rpm above 3000 or whatever number. They don't charge. That BTR cam might be just what you want but I am concerned with knock with 10.5:1.
Let us know what they say if you do call Comp
Call Comp for a recommendation. They will ask you everything, but emphasize that you don't care about rpm above 3000 or whatever number. They don't charge. That BTR cam might be just what you want but I am concerned with knock with 10.5:1.
Let us know what they say if you do call Comp
Feb 5, 2020 | 07:39 PM
#9
Thread Starter
Teching In
Joined: Aug 2019
Posts: 15
Likes: 1
There's an increased chance of detonation at low rpm with higher cylinder pressures. High load, high compression, and low rpm add up to knocking. I assume a 4l80e with the big, heavy, stock converter, too?
Call Comp for a recommendation. They will ask you everything, but emphasize that you don't care about rpm above 3000 or whatever number. They don't charge. That BTR cam might be just what you want but I am concerned with knock with 10.5:1.
Let us know what they say if you do call Comp
Call Comp for a recommendation. They will ask you everything, but emphasize that you don't care about rpm above 3000 or whatever number. They don't charge. That BTR cam might be just what you want but I am concerned with knock with 10.5:1.
Let us know what they say if you do call Comp
Feb 6, 2020 | 11:50 AM
#10
LS1Tech Sponsor
Joined: Jan 2008
Posts: 462
Likes: 243
From: Ohio, Georgia, Nevada, Texas
OP,
In your case of wanting the most torque between 2000-2500, the BTR torque cam would be the way to go. This is due to the intake valve closing event of 31* ABDC. The earlier we close the intake valve the more compression and torque we build down low. In comparison, our tow cam closes the intake valve at 33* ABDC.
In your case of wanting the most torque between 2000-2500, the BTR torque cam would be the way to go. This is due to the intake valve closing event of 31* ABDC. The earlier we close the intake valve the more compression and torque we build down low. In comparison, our tow cam closes the intake valve at 33* ABDC.
