Cam question
Thread Starter
Drifting
Joined: Dec 2009
Posts: 1,404
Likes: 7
From: Malverne New York
Cam question
I know that the LT1 engine has a potent amount of low/mid range torque, about as much as an LS7 up to 4700rpm I believe it was. My question is, is there a cam design out there that is mild, almost "stealth" cam like that will retain the low end and mid range torque, while adding some decent power up top? I noticed by the dynographs that the hp drops off a bit after 6000/6200 rpms. I know Livernois does some fantastic work. I can't wait to see all the different Cam options and to see what a mild "stealth" cam should do to the power curve and what type of gains can be seen, WITHOUT any head work. I've had a nightmare of an experience having the cylinder heads removed. After 20k miles with the head work, the car would over heat because combustion gases were seeping into the coolant. For some reason, this caused the coolant to NOT be drawn back into the radiator after the coolant cooled down and eventually, the overflow would in fact, overflow and eventually the car would run low on coolant and overheat. To figure out that was the cause of the problem was such a nightmare, it drove me insane. We tried everything under the sun until we figured out that was the problem. That's basically why I want to refrain from removing the heads. Personal horrible experience.
Le Mans Master
Joined: Jul 2005
Posts: 7,405
Likes: 353
From: New Castle Del.
St. Jude Donor '09
I know that the LT1 engine has a potent amount of low/mid range torque, about as much as an LS7 up to 4700rpm I believe it was. My question is, is there a cam design out there that is mild, almost "stealth" cam like that will retain the low end and mid range torque, while adding some decent power up top? I noticed by the dynographs that the hp drops off a bit after 6000/6200 rpms. I know Livernois does some fantastic work. I can't wait to see all the different Cam options and to see what a mild "stealth" cam should do to the power curve and what type of gains can be seen, WITHOUT any head work. I've had a nightmare of an experience having the cylinder heads removed. After 20k miles with the head work, the car would over heat because combustion gases were seeping into the coolant. For some reason, this caused the coolant to NOT be drawn back into the radiator after the coolant cooled down and eventually, the overflow would in fact, overflow and eventually the car would run low on coolant and overheat. To figure out that was the cause of the problem was such a nightmare, it drove me insane. We tried everything under the sun until we figured out that was the problem. That's basically why I want to refrain from removing the heads. Personal horrible experience.
There is cams out than can do that. Where are you located.
Thread Starter
Drifting
Joined: Dec 2009
Posts: 1,404
Likes: 7
From: Malverne New York
I'm on Long Island in New York, but am willing to travel to a reputable place if necessary. There really is no rush, I don't even have the car yet. I just want to learn as much as possible. I am absolutely LOVING what I am hearing/reading so far.
Thread Starter
Drifting
Joined: Dec 2009
Posts: 1,404
Likes: 7
From: Malverne New York
I'm familiar with the place. They're right next to American Racing Headers, which I had installed by them on my last car. That spot is Corvette heaven lol.
Le Mans Master
Joined: Jul 2005
Posts: 7,405
Likes: 353
From: New Castle Del.
St. Jude Donor '09
feel free to give us a call. We can get you taken care of. I picked up my C7 last week.
Premium Supporting Vendor
Joined: Dec 1999
Posts: 1,984
Likes: 19
From: Texas Speed TX
There will be some smaller LT camshafts that will still be AFM friendly no problem. My advise to you is give a few weeks for people to line out packages. The packages that are rushed out to customers will most likely be down on power from packages that have some extra time to be proofed/adjusted. We have several camshafts going, but I dont want to sell anyone anything until I'm happy with the camshafts meeting their max potential.
Jason
Jason
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Safety Car
Joined: Oct 2008
Posts: 3,966
Likes: 17
From: Ft. Collins, CO
There will be some smaller LT camshafts that will still be AFM friendly no problem. My advise to you is give a few weeks for people to line out packages. The packages that are rushed out to customers will most likely be down on power from packages that have some extra time to be proofed/adjusted. We have several camshafts going, but I dont want to sell anyone anything until I'm happy with the camshafts meeting their max potential.
Jason
Jason
what does it take to delete AFM? tune only? I am interested in a cam kit if you guys will sell me one. I don't need it to be the most powerful cam I don't mind a mild setup. yes max potential is great, but really want to get a cam asap.
Intermediate
Joined: Oct 2013
Posts: 26
Likes: 1
The history of AFM delete requires a new valley plate, new valley plate gasket or a modified gasket, new lifters (8 of em) and new lifter guides. Camshaft replacement often requires new springs as well, and probably pushrods.
The hardware requirements are to replace weak AFM lifters with hi-po parts and reroute the oil circulation to bypass AFM function.
Yes, a tune is required, but not more than a switch or two to shut the AFM off. Hardware cost of Camaro/G8 AFM delete, as I recall, was around 1200 for cam and springs, lifters, valley plate, gaskets, pushrods..... Cheap. And don't worry about the loss of MPG; by the time you provide for a performance oriented build and computer tune with high flow and efficiency, you will achieve the same or more MPG (as long as your cam selection is sensible to this goal).
My 427 cubic inch Pontiac G8 does 24 MPG freeway.
The new block might have additional requirements, but I doubt it will be extensively different from above. In order to change the lifters on older architecture, the heads had to come off. Who knows about the C7, maybe, maybe not!!
The hardware requirements are to replace weak AFM lifters with hi-po parts and reroute the oil circulation to bypass AFM function.
Yes, a tune is required, but not more than a switch or two to shut the AFM off. Hardware cost of Camaro/G8 AFM delete, as I recall, was around 1200 for cam and springs, lifters, valley plate, gaskets, pushrods..... Cheap. And don't worry about the loss of MPG; by the time you provide for a performance oriented build and computer tune with high flow and efficiency, you will achieve the same or more MPG (as long as your cam selection is sensible to this goal).
My 427 cubic inch Pontiac G8 does 24 MPG freeway.
The new block might have additional requirements, but I doubt it will be extensively different from above. In order to change the lifters on older architecture, the heads had to come off. Who knows about the C7, maybe, maybe not!!
Last edited by danf1000; Oct 25, 2013 at 08:37 PM.
Safety Car
Joined: Oct 2008
Posts: 3,966
Likes: 17
From: Ft. Collins, CO
The history of AFM delete requires a new valley plate, new valley plate gasket or a modified gasket, new lifters (8 of em) and new lifter guides. Camshaft replacement often requires new springs as well, and probably pushrods.
The hardware requirements are to replace weak AFM lifters with hi-po parts and reroute the oil circulation to bypass AFM function.
Yes, a tune is required, but not more than a switch or two to shut the AFM off. Hardware cost of Camaro/G8 AFM delete, as I recall, was around 1200 for cam and springs, lifters, valley plate, gaskets, pushrods..... Cheap. And don't worry about the loss of MPG; by the time you provide for a performance oriented build and computer tune with high flow and efficiency, you will achieve the same or more MPG (as long as your cam selection is sensible to this goal).
My 427 cubic inch Pontiac G8 does 24 MPG freeway.
The new block might have additional requirements, but I doubt it will be extensively different from above. In order to change the lifters on older architecture, the heads had to come off. Who knows about the C7, maybe, maybe not!!
The hardware requirements are to replace weak AFM lifters with hi-po parts and reroute the oil circulation to bypass AFM function.
Yes, a tune is required, but not more than a switch or two to shut the AFM off. Hardware cost of Camaro/G8 AFM delete, as I recall, was around 1200 for cam and springs, lifters, valley plate, gaskets, pushrods..... Cheap. And don't worry about the loss of MPG; by the time you provide for a performance oriented build and computer tune with high flow and efficiency, you will achieve the same or more MPG (as long as your cam selection is sensible to this goal).
My 427 cubic inch Pontiac G8 does 24 MPG freeway.
The new block might have additional requirements, but I doubt it will be extensively different from above. In order to change the lifters on older architecture, the heads had to come off. Who knows about the C7, maybe, maybe not!!
either way I do want a cam kit... probably contact LMR on Monday to see what they can do for me!
Thread Starter
Drifting
Joined: Dec 2009
Posts: 1,404
Likes: 7
From: Malverne New York
The history of AFM delete requires a new valley plate, new valley plate gasket or a modified gasket, new lifters (8 of em) and new lifter guides. Camshaft replacement often requires new springs as well, and probably pushrods.
The hardware requirements are to replace weak AFM lifters with hi-po parts and reroute the oil circulation to bypass AFM function.
Yes, a tune is required, but not more than a switch or two to shut the AFM off. Hardware cost of Camaro/G8 AFM delete, as I recall, was around 1200 for cam and springs, lifters, valley plate, gaskets, pushrods..... Cheap. And don't worry about the loss of MPG; by the time you provide for a performance oriented build and computer tune with high flow and efficiency, you will achieve the same or more MPG (as long as your cam selection is sensible to this goal).
My 427 cubic inch Pontiac G8 does 24 MPG freeway.
The new block might have additional requirements, but I doubt it will be extensively different from above. In order to change the lifters on older architecture, the heads had to come off. Who knows about the C7, maybe, maybe not!!
The hardware requirements are to replace weak AFM lifters with hi-po parts and reroute the oil circulation to bypass AFM function.
Yes, a tune is required, but not more than a switch or two to shut the AFM off. Hardware cost of Camaro/G8 AFM delete, as I recall, was around 1200 for cam and springs, lifters, valley plate, gaskets, pushrods..... Cheap. And don't worry about the loss of MPG; by the time you provide for a performance oriented build and computer tune with high flow and efficiency, you will achieve the same or more MPG (as long as your cam selection is sensible to this goal).
My 427 cubic inch Pontiac G8 does 24 MPG freeway.
The new block might have additional requirements, but I doubt it will be extensively different from above. In order to change the lifters on older architecture, the heads had to come off. Who knows about the C7, maybe, maybe not!!
Intermediate
Joined: Oct 2013
Posts: 26
Likes: 1
Are you on Grrrr8.net? Sounds like you have a hell of a G8. With labor, I paid about $3600 bucks for the AFM delete on my G8 GT, and that's with sending the heads to Livernois for a CNC valve job. I'm just terribly afraid of removing the heads now after what happened. I know it's probably somewhat of an irrational fear, but it still happened and still sucked. Maybe it could be do to my guy installing thinner head gaskets to bump the compression.
After review i coulda tamed it down, but Chucks BFFs insinuated a whupass....
Back to topic! Kids, get rid of AFM, and change your cam to a sensible street cam, where overlap at .050 is less than 8 degrees.
My G8 has 40K on the short block and is still running strong. Cars are glass, steel, aluminum, and plastic. Feel free to get educated, get a wrench, and get started!
Last edited by danf1000; Oct 26, 2013 at 08:37 PM.