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  • 1996 - 2004 SN95 Mustang -General/Talk-
  • SN95 4.6L Mustang Tech

Cams and Gears

  • Thread starter Thread starter NPIGT
  • Start date Start date Aug 24, 2005
N

NPIGT

New Member
Nov 29, 2004
96
0
0
Aug 24, 2005
#1
  • Aug 24, 2005
  • #1
I was wondering why when you switch cams, such as the VT Stage 1 cams they recommend a gear ratio of at least 3.55. How do the gears effect the horsepower you put out?
 

DropTopPony

Noob Slayer
Founding Member
Aug 13, 2002
2,570
3
48
south jersey
Aug 24, 2005
#2
  • Aug 24, 2005
  • #2
my guess would be that most cams pick up hp in the upper rpm range and having the right gear will get you to the right rpm's to make max hp.
 

Dark Knight GT

I can't get it up......ok that didn't sound right.
May 26, 2003
3,653
2
56
Ozark, Missouri
Aug 24, 2005
#3
  • Aug 24, 2005
  • #3
droptopponynj said:
my guess would be that most cams pick up hp in the upper rpm range and having the right gear will get you to the right rpm's to make max hp.
Click to expand...
Bingo. With these higher performance cams, the torque curve shifts to being a bit higher. Having anything less than 3.55 gears will result in more time spent below the new torque curve, and thus it can hurt performance and make daily driving a bit of a PITA.
 

90RanGer

New Member
Apr 1, 2004
132
0
0
Santa Cruz, CA
Aug 24, 2005
#4
  • Aug 24, 2005
  • #4
I'm still running the stock gear ratio in my car, I will upgrade but havent had a chance yet. It seems fine, its pretty obvious where the power band is in the car, but daily driving is just fine with stock ratio and those cams.
 

Dark Knight GT

I can't get it up......ok that didn't sound right.
May 26, 2003
3,653
2
56
Ozark, Missouri
Aug 24, 2005
#5
  • Aug 24, 2005
  • #5
90Ranger, you're also running a Bullit intake with Stage I cams. Not the stock intake setup with Stage II cams. The Bullit intake helps to pick torque up on the low end and improve throttle response over the stock intake. That, and the Stage II cams have a bit more lift for higher rpm band power than Stage I's. Not saying its a "world of difference" from your setup, but different none the less.
 
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