Replacing with roller cam?
Thread Starter
Melting Slicks
Joined: Sep 2007
Posts: 2,429
Likes: 0
From: Tucson AZ
I just might. Now see, not having a big block for so long, I was thinking that it might be best to have around .480-.500 lift. Hey, I can live with ANY cam that keeps the vacuum at an acceptable level. I've worked way to hard to get all the vacuum stuff working since I bought the car in June of 06. I heard on this post the Voodoo cam as well. I gonna drive the thing like I stole it, for now. I do hear a bit of "rattle" at 2000-2500 RPM's. It's been parked since I heard it. I'm gonna change the oil and filter (and check it). I'm gonna check the flex plate for cracks too. That noise is nothing more than a concern at this point. It'll get there, soon as my money tree crop is ready to harvest again.
Racer
Joined: Dec 2006
Posts: 417
Likes: 40
From: Swansea IL
Tank,
Not trying to insult you at all. You seem to have quite an attitude when someone trys to provide an answer to your nebulus question?
What sort of cam should I put in my LS-5 when considering my "Oil Situation"? Guess I need to brush up on my mind reading.
If you are satisfied with the HP, they why change a thing? Oil usage is not predicated on the cam that is in the engine. That is a function of oil control (AKA valve guides, rings, oil pressure, and piston wall clearance. I assumed your engine knowledge was such that you had already considered that.
Go to any cam site and they will ask you for a bunch of information before they start recommending anything. For anyone to tell you that you needed XYZ would be filling in an awful lot of gaps with assumptions. Dangerous thinking.
Folks on this forum are genuinely trying to help. Something is always lost when you use your fingers to think out loud!
Hope your project turns out.
Bob
Not trying to insult you at all. You seem to have quite an attitude when someone trys to provide an answer to your nebulus question?
What sort of cam should I put in my LS-5 when considering my "Oil Situation"? Guess I need to brush up on my mind reading.
If you are satisfied with the HP, they why change a thing? Oil usage is not predicated on the cam that is in the engine. That is a function of oil control (AKA valve guides, rings, oil pressure, and piston wall clearance. I assumed your engine knowledge was such that you had already considered that.
Go to any cam site and they will ask you for a bunch of information before they start recommending anything. For anyone to tell you that you needed XYZ would be filling in an awful lot of gaps with assumptions. Dangerous thinking.
Folks on this forum are genuinely trying to help. Something is always lost when you use your fingers to think out loud!
Hope your project turns out.
Bob
Thread Starter
Melting Slicks
Joined: Sep 2007
Posts: 2,429
Likes: 0
From: Tucson AZ
Burning Brakes
Joined: Feb 2005
Posts: 894
Likes: 91
Flat Tappet vs. Hyd Roller
In other words, the roller setup ADDS about 25 HP overall.
We've done some recent "in-the-dyno-room" testing and validated what we had suspected all along. The roller alone is worth some valuable HP. We hadn't had an opportunity to pull this off until a recent customer requested the change "mid-stream". Seeing as he purchased the parts from us we did the change "on-the-house" right on the dyno!! We were looking for this answer and his timing was on the money.
You also will NOT flatten the cam, I believe this is what you were looking to avoid, the oil is definitely going "down hill"!
Thanks, Gary in N.Y.
P.S. The test involved a 396 BB with a "short" flat-tappet hyd grind. As I said, it was removed while in the dyno room and we installed the identical grind (spec-wise) hyd-roller and confirmed our thoughts. The unit produced about 354 HP first, and 380 after the swap.
Thread Starter
Melting Slicks
Joined: Sep 2007
Posts: 2,429
Likes: 0
From: Tucson AZ
Thanks for the response, I knew there would be an increase, just didn't know exact. I just may be backing up here, just a bit. I'm thinking I might just put on my roller rockers and call it good for now. Or at least until something comes up to warrant a cam change.
The "oil situation that some folks blew way the hell outta proportion is nothing more than using what I want to use, not some racing oil, some "not for street use" oil, or any of that. It was perfectly clear to me when I wrote it. Someone didn't read the words I typed and the race was on from there.
The other statement that seemed to cause an uproar was, "I've been looking at cams for awhile. I'm gonna go with a roller that emulates the LS5 cam, just in roller form". That is cut and pasted right from my post previously.
Not to insult anyone, but to explain my country self, emulates, to me means to imitate, mock, replicate. That means I'm not going to pay for a roller hyd. cam that is exactly what the stock cam specs are, but one that is "about" the same.
I'm sorry to say, but I think some folks read what they want to, and respond on what they think they have read. I've read this entire post, and I understand every post, and every person that wrote it.
The "oil situation that some folks blew way the hell outta proportion is nothing more than using what I want to use, not some racing oil, some "not for street use" oil, or any of that. It was perfectly clear to me when I wrote it. Someone didn't read the words I typed and the race was on from there.
The other statement that seemed to cause an uproar was, "I've been looking at cams for awhile. I'm gonna go with a roller that emulates the LS5 cam, just in roller form". That is cut and pasted right from my post previously.
Not to insult anyone, but to explain my country self, emulates, to me means to imitate, mock, replicate. That means I'm not going to pay for a roller hyd. cam that is exactly what the stock cam specs are, but one that is "about" the same.
I'm sorry to say, but I think some folks read what they want to, and respond on what they think they have read. I've read this entire post, and I understand every post, and every person that wrote it.
