What kind of cam is he running?

R

Rosco347

New Member

May 19, 2005

3

0

0

May 19, 2005

#1

• May 19, 2005

• #1

Just curious, but what kind of a cam would be used here to produce that kind of sound? My buddy has an e-cam in his 5.0 and when he get's on it, the rpms don't come up that fast.

example

Someone told me it's because it's a flat tappet cam vs. hydro roller. I would think it's duration or LSA.

 

R

Rosco347

New Member

May 19, 2005

3

0

0

May 19, 2005

#2

• May 19, 2005

• #2

anybody?

 

XXBULLETSXX

New Member

Mar 30, 2005

301

0

0

Kannapolis, NC

May 19, 2005

#3

• May 19, 2005

• #3

Dude I have no idea....but I want it too! Ya Baby Ya!!!!

 

M

my66coupe

Founding Member

Apr 30, 2002

1,134

0

36

Arizona fountain hills

May 19, 2005

#4

• May 19, 2005

• #4

With my stock cam, and my headman longtubes, open no mufflers, I can replicate that sound.........Soo ya judging by the clip I say its more of open pipe combo to acheive that sound.

 

RaSMG

Founding Member

Oct 5, 2002

270

0

0

Central Cali

May 19, 2005

#5

• May 19, 2005

• #5

those are solid cammed high compression racing engines, probably running on 110 octane and with no exhaust.

 

R

ron67fb

Founding Member

Aug 3, 2001

1,117

0

36

SF Bay area, CA

May 19, 2005

#6

• May 19, 2005

• #6

I think you're hearing all three cars in that video, with no mufflers even. You'd have a hard time replicating that sound on your own

The fast revs most likely come from lightened engine components; an aluminum flywheel for example.

 

ddonaca351

Active Member

Dec 1, 2002

2,055

1

48

Camas Washington

May 19, 2005

#7

• May 19, 2005

• #7

The speed at which an engine comes up through the rpm range is determined by power output (horsepower is a measurement of how quickly an engine can perform a given amount of work) and by gearing, not by the exhaust (other than its impact on the power output).

Dave-

 

65ShelbyClone

Founding Member

Sep 9, 2000

4,675

38

119

Antelope Valley, SoCal

May 20, 2005

#8

• May 20, 2005

• #8

I'm with the others; really high compression, lighweight rotating assembly, and a really tall cam. I also doubt there is much in the way of exhaust.

 

R

ron67fb

Founding Member

Aug 3, 2001

1,117

0

36

SF Bay area, CA

May 20, 2005

#9

• May 20, 2005

• #9

ddonaca351 said:

The speed at which an engine comes up through the rpm range is determined by power output (horsepower is a measurement of how quickly an engine can perform a given amount of work) and by gearing, not by the exhaust (other than its impact on the power output).

Dave-

Click to expand...

I believe he was talking about how fast it revved up in neutral, not under acceleration, since the cars in the video were on their way to their parking spots.

 

R

Rosco347

New Member

May 19, 2005

3

0

0

May 20, 2005

#10

• May 20, 2005

• #10

Yeap, that's what I was referring too.

 

brianj5600

Active Member

Sep 19, 2003

1,964

2

39

Middle TN

May 20, 2005

#11

• May 20, 2005

• #11

A powerful motor will gain revs faster in neutral too. Big cam and lots of compression is all you need.

 

Route666

Active Member

Aug 16, 2003

1,652

6

39

Brisbane, Australia

May 20, 2005

#12

• May 20, 2005

• #12

Yeh baby that's the "on the edge of self-destruction" high compression ratio beast machine sound I mentioned in another thread. High comp and big cam = nasty.

 

ddonaca351

Active Member

Dec 1, 2002

2,055

1

48

Camas Washington

May 21, 2005

#13

• May 21, 2005

• #13

ron67fb said:

I believe he was talking about how fast it revved up in neutral, not under acceleration, since the cars in the video were on their way to their parking spots.

Click to expand...

Damn work firewall....

The same principal holds true.... the motor in neutral is trying to overcome the weight of its rotating assy. The more power the motor makes, the quicker (or crisper as I like to say) it will be. In the case of race motors they usually run the lightest of everything that they can get (and still live) cuz this frees up power. The motor is using up less of its power trying to overcome its own internal weight. ect.... so on.... but you get the idea.

DD