Lt4 Hot Cam questions
Thread Starter
Burning Brakes
Joined: Jan 2007
Posts: 1,117
Likes: 1
From: Central NJ
Lt4 Hot Cam questions
I just bought an lt4 hotcam for my 96 ce lt4 vette. My questions are :
1. About how long will it take me to put it in?
2. About how much power am i looking to gain? I already have EM LT's, bullet cats, slp claw intake, slp 3" cat-back.
3. Is it something I should attempt myself, I have the fsm's and have done the LT's and waterpump myself which wasnt hard, just time consuming.
4. Do I have to break open the a/c lines to pull the cam out and replace?
5. Finally, (I have read that I could, but wanted to cinfirm) can I keep everything else stock (rockers...)?
1. About how long will it take me to put it in?
2. About how much power am i looking to gain? I already have EM LT's, bullet cats, slp claw intake, slp 3" cat-back.
3. Is it something I should attempt myself, I have the fsm's and have done the LT's and waterpump myself which wasnt hard, just time consuming.
4. Do I have to break open the a/c lines to pull the cam out and replace?
5. Finally, (I have read that I could, but wanted to cinfirm) can I keep everything else stock (rockers...)?
Last edited by ubnpast; Feb 13, 2008 at 10:59 PM.
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
I just bought an lt4 hotcam for my 96 ce lt4 vette. My questions are :
1. About how long will it take me to put it in?
2. About how much power am i looking to gain? I already have EM LT's, bullet cats, slp claw intake, slp 3" cat-back.
3. Is it something I should attempt myself, I have the fsm's and have done the LT's and waterpump myself which wasnt hard, just time consuming.
4. Do I have to break open the a/c lines to pull the cam out and replace?
5. Finally, (I have read that I could, but wanted to cinfirm) can I keep everything else stock (rockers...)?
1. About how long will it take me to put it in?
2. About how much power am i looking to gain? I already have EM LT's, bullet cats, slp claw intake, slp 3" cat-back.
3. Is it something I should attempt myself, I have the fsm's and have done the LT's and waterpump myself which wasnt hard, just time consuming.
4. Do I have to break open the a/c lines to pull the cam out and replace?
5. Finally, (I have read that I could, but wanted to cinfirm) can I keep everything else stock (rockers...)?
2) ~30rwhp (on a Dynojet dyno)
3) Only you know that. For some, cam swaps are a walk in the park, for others it's like learning Quantum Physics
4) No
5) You can although most don't because they want the adjustability
Pro
Joined: Jan 2004
Posts: 707
Likes: 0
From: Syracuse Utah
I just bought an lt4 hotcam for my 96 ce lt4 vette. My questions are :
1. About how long will it take me to put it in?
2. About how much power am i looking to gain? I already have EM LT's, bullet cats, slp claw intake, slp 3" cat-back.
3. Is it something I should attempt myself, I have the fsm's and have done the LT's and waterpump myself which wasnt hard, just time consuming.
4. Do I have to break open the a/c lines to pull the cam out and replace?
5. Finally, (I have read that I could, but wanted to cinfirm) can I keep everything else stock (rockers...)?
1. About how long will it take me to put it in?
2. About how much power am i looking to gain? I already have EM LT's, bullet cats, slp claw intake, slp 3" cat-back.
3. Is it something I should attempt myself, I have the fsm's and have done the LT's and waterpump myself which wasnt hard, just time consuming.
4. Do I have to break open the a/c lines to pull the cam out and replace?
5. Finally, (I have read that I could, but wanted to cinfirm) can I keep everything else stock (rockers...)?
2. I'm guessing 25-30.
3. It is easier on the 95s and 96s; you should be good.
4. No.
5. Yes, but replace the valve stem seals anyway--they're cheap.
Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
At idle during Open Loop operation (ie at startup) the A/F ratio will be very rich.
Tuning addresses both of the above issues as well as adding power.
Thread Starter
Burning Brakes
Joined: Jan 2007
Posts: 1,117
Likes: 1
From: Central NJ
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Race Director
Joined: Apr 2000
Posts: 15,344
Likes: 4,009
From: Texas
The commonly used tuning package is "LT1 Edit" for OBD II, but it's for both engines. It's a GUI that you use to download and upload PCM flash files. Tunercat also has an OBD II tuning program. These are real tuning programs not some flash in a can like Hypertech. You inadvertantly screw up the tune and upload it into your PCM, you risk destroying the engine. There are no safety nets.
People have run for years on the stock LT4 programming. The SES light is an annoyance (and will result in a failed emissions test if you have that in your state), the exhaust will smell bad when you first start the car, and after doing all that work it seems a waste to leave easy hp "on the table" so to speak.
