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I am putting together as much information as possible to help get a better understanding of making power with cam selection.

I am trying to get as many people as possible to help me by posting the following. Your engine and trans combos, gear ratios, max rpms, along with rear wheel horsepower and/or E.T. and MPH.

I am looking for as much info on your CAM SPECS as you have! I know there are a lot of people that will not want to do this and that is understandable. But please post here either way the rest of your combo minus cam. You can also PM me this info and it WILL NOT be given out.

The goal is to learn as much about what works to be able to help point others in the right direction with their combos.

Also if you had an old setup that worked well please post these too! BLOWER COMBOS ONLY!!!
 

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Mark,
Great thread BUT there's that unwritten rule that you don't give out custom cam specs that you had to pay money for.

I've been asked on numerous occasions for my camshaft specs but after all the hard work, money and time invested in my combo, its not something I'm going to just give out to anyone unless they want to pay for it. Plus, its just one piece of the puzzle when you're looking at a whole combo.

The goal is to learn as much about what works to be able to help point others in the right direction with their combos.
This is why you contact people in the industry that have the knowledge on camshafts. Example: Freezy, Ed Curtis, Buddy Rawls, Bullet Cams, Cam Motion and Comp cams to name a few.
 

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Discussion Starter #6
Mark,
Great thread BUT there's that unwritten rule that you don't give out custom cam specs that you had to pay money for.

I've been asked on numerous occasions for my camshaft specs but after all the hard work, money and time invested in my combo, its not something I'm going to just give out to anyone unless they want to pay for it. Plus, its just one piece of the puzzle when you're looking at a whole combo.
Ya, I know. And I understand completely. I was hoping that there would be a decent amout of people that would be fine with posting this info.

I very much used to be this way myself. I had alot of things that I was doing to make power that I would not share with anyone. I spent alot of time figuring things out and didn't want to just give that info to anyone else.

I am just interested to to how multiple cams that are completely different work in the same combo or mabye how one cam in the same combo is way better than others. With so many different cam companys having completely different ideas on what works things are really confusing to me.
 

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Picking the right cam for a combo is not as easy as just knowing the specs. There are certain things that need to be figured out BEFORE those specs are even came to. Just picking a cam from what other people have is like saying the answer to the question is 8 because 4+4 must equal 8, however after figuring everything out you realize the question was actually 4X4. Maybe I am not explaining this properly……

Cam specs are a RESULT of what is needed for a combo. It’s the final answer to an equation that needs to be figured out first, before the specs can be decided on. You can have 2 cams that have the same .050 duration numbers. Let’s use a 230 duration lobe as an example. One has a duration number at .200 of 142 another is as much as 154. Seat, or advertised numbers cam be 10+ degrees different. Even though on the cam card they seem the same, it’s the numbers NOT on the card that make all the difference. Those lobes are both good for their intended applications. But just because it works great in Plummer’s car, it may not be as good in yours. One may peak sooner and fall off and the other may carry it out much farther. And yes, even though the .050 duration is the same, there can be that much of a difference between them. It will idle different, one would be “snappier” then the other, one will just allow the motor to accelerate faster and recover better after a shifting, one will have better vacuum and drive-ability. The .050 duration is only about 40% of the story that is being told. That why companies have more than 1 lobe with the same numbers at .050. Comp has like 8 lobes that are [email protected] There is a reason.

If you truly are looking to learn about this stuff, the best advice I can give you is not to find out specs, but look for WHY you need certain specs. What makes one motor want something different than another? How do changes affect it? It’s not that people that do this stuff don’t like to explain things (well, some don’t…), I have spent more time than you could imagine explaining things to people and why their motor needs certain things vs. what they have. There is just no rule of thumb that says “for this motor use this cam”. If it was that easy, it would make things much easier on my end….
 

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Discussion Starter #9
You have been really helpful. And thanks for you help before.

The thing I am thinking is, in this forum, 75% of the people have such similiar combos that I would bet you could grind two cams one for the street car guys that shift at 6000 rpms and one for the guys who shift at 7500. And I would think those 2 cams from a guy that understands blower cams like yourself would be awesome in that 75% of cars. They might not be petrfect but still great.That is what I am getting at. Do you agree?
 

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You have been really helpful. And thanks for you help before.

The thing I am thinking is, in this forum, 75% of the people have such similiar combos that I would bet you could grind two cams one for the street car guys that shift at 6000 rpms and one for the guys who shift at 7500. And I would think those 2 cams from a guy that understands blower cams like yourself would be awesome in that 75% of cars. They might not be petrfect but still great.That is what I am getting at. Do you agree?
I am not trying to be a smart ass so please dont take it this way, but if everybody ran an E303 for cars to 6000 rpm and an X303 for cars to 7000, would that make it right? Things are just not always that generic.
 

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My can in my sig.
 

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I mean cam!!
 

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I am putting together as much information as possible to help get a better understanding of making power with cam selection.


The goal is to learn as much about what works to be able to help point others in the right direction with their combos.
how is this possible when.....

I very much used to be this way myself. I had alot of things that I was doing to make power that I would not share with anyone. I spent alot of time figuring things out and didn't want to just give that info to anyone else.
Karma I guess!

Mark,
Great thread BUT there's that unwritten rule that you don't give out custom cam specs that you had to pay money for.

I've been asked on numerous occasions for my camshaft specs but after all the hard work, money and time invested in my combo, its not something I'm going to just give out to anyone unless they want to pay for it. Plus, its just one piece of the puzzle when you're looking at a whole combo.
This statement baffles me because....when started your cam research ( or anything else as a matter of fact), I bet you asked people for all kinds of help or advise.


This is why you contact people in the industry that have the knowledge on camshafts. Example: Freezy, Ed Curtis, Buddy Rawls, Bullet Cams, Cam Motion and Comp cams to name a few.
exactly

Start here:
Understanding How Camshafts Work - Engine Masters Magazine

once you have everything memorized, then do an advanced/ specific search.

Sorry for being an ass....I just don't like how this is going
 

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Discussion Starter #14
I am not trying to be a smart ass so please dont take it this way, but if everybody ran an E303 for cars to 6000 rpm and an X303 for cars to 7000, would that make it right? Things are just not always that generic.
Agreed!
 

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This statement baffles me because....when started your cam research ( or anything else as a matter of fact), I bet you asked people for all kinds of help or advise.
I did and then I was told to talk to a cam specialist, so I passed on that advice given to me, to him.
 

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Discussion Starter #16
how is this possible when.....



Karma I guess!



This statement baffles me because....when started your cam research ( or anything else as a matter of fact), I bet you asked people for all kinds of help or advise.




exactly

Start here:
Understanding How Camshafts Work - Engine Masters Magazine

once you have everything memorized, then do an advanced/ specific search.

Sorry for being an ass....I just don't like how this is going
I don't like where this is going either. But I guessed this would happen.

Karma- I guess you don't really know me but I am ALWAYS doing what I can to help someone else. If I would have been asked about specific things I was doing I was honest but I didn't tell people without it coming up I guess. To me the only guys that really should be hiding thier cam specs are the guys grinding them, not just some guy who spent at extra $50 on a custom cam.(i don't mean this in an offensive way at all)
 

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331 (8.75:1), B451 cam 232/240 .576/.576 w/1.6 rocker 112 , TW 170 FAC heads (untouched), TF-R efi intake, 80lb inj, 75mm tb, e85, Mr. Freeze, Mac 1 3/4 headers/prochamber/2.5" magnaflow exhaust through a 5 speed.
Lots being changed right now but cam is staying.
 

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Discussion Starter #19

331 (8.75:1), B451 cam 232/240 .576/.576 w/1.6 rocker 112 , TW 170 FAC heads (untouched), TF-R efi intake, 80lb inj, 75mm tb, e85, Mr. Freeze, Mac 1 3/4 headers/prochamber/2.5" magnaflow exhaust through a 5 speed.
Lots being changed right now but cam is staying.
Perfect! Thanks! Alot of nice setups!
 
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