4.10 gears equivalent hp gain

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11-21-2006, 02:10 PM

#31

cody6.0

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Join Date: Nov 2006

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Posts: 48

RE: 4.10 gears equivalent hp gain

There wasn't any stupid comments made, just facts.

And when it comes to 4.10's in a near stock GT it is a band-aid fix for quickness.

The SOHC 4.6 has low peaks for HP and TQ meaning it hits a high number than drops. There Dyno graphs look like mountains.

Gears just make it hit the peak faster.

The original poster wanted to know what HP it would take to beat a similar car with 4.10's.

With the SOHC's power band it would take much more than 15HP to make things equal. More like 30-40HP.

11-21-2006, 02:11 PM

#32

SixEight

2nd Gear Member

Join Date: Oct 2006

Location: South Jersey

Posts: 170

RE: 4.10 gears equivalent hp gain

Quote:

Only if by slower you mean that your 4th gear wont be able to go past 115-120ish. As far as acceleration goes though...it will pull harder in every gear than it did before.

Exactly. I don't think some of the guys giving answers even know how gears work. There are two variables, speed and acceleration. Nothing about your car will be slower by going to 4.10s. Each gear will wind out earliar, but you'll pull harder across each one. Even with 4.10s, you'll never be limited by gears in terms of top speed. You will hit your cars 150+ mph limiter faster than ever before.

If you've removed the limiter, your car is not limited by 4.10's in the 150+ mph zone. It's limited by power. We just don't have the horsepower to reach the mechanical top speed of the gear. The point I'm trying to make is that you will not be slowing down ANYTHING by going to 4.10s.

11-21-2006, 02:52 PM

#33

Demon 340

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Join Date: Nov 2002

Location: yep

Posts: 16,186

RE: 4.10 gears equivalent hp gain

Quote:

ORIGINAL: cody6.0

There wasn't any stupid comments made, just facts.

And when it comes to 4.10's in a near stock GT it is a band-aid fix for quickness.

The SOHC 4.6 has low peaks for HP and TQ meaning it hits a high number than drops. There Dyno graphs look like mountains.

Gears just make it hit the peak faster.

The original poster wanted to know what HP it would take to beat a similar car with 4.10's.

With the SOHC's power band it would take much more than 15HP to make things equal. More like 30-40HP.

unlike yourself, some people actually are more concerned with real world track numbers than they are with dyno gains, and bigger gears will typically give you a better ET, unless you are gear bound which a 4.10 gear certainly shouldnt do in a new stock GT.

youre on thin enough ice as it is...so i suggest that you watch what you say, and stick to what you know best...pointless discussions about how great your crappy cars are, over in the race section.

sixeight, i am guessing that slowdy meant that you would lose top speed with a bigger gear...

11-21-2006, 05:26 PM

#34

Armydad

3rd Gear Member

Thread Starter

Join Date: Aug 2006

Location: Upstate NY

Posts: 621

RE: 4.10 gears equivalent hp gain

Quote:

ORIGINAL: ponysnake99

alrighty taking a basic quater mile/hp calc and the rule of thumb: 4.10s lower et by .3-.4 seconds...here you go

a 3500 lb mustang with 400 hp and 3.27s runs the quarter in 12 seconds
a 3500 lb mustang would run approx 11.6-11.7 with 4.10s making hp gain 30-40 flywhel hp

tuh-duh...(in my opinion) its not too accurate, but i think thats more of what your looking for, try comparing times before and aft using some calculator

DING DING DING we have a winna!

Thanks to you and anyone else who got it. I did not have a chance to run my car a track yet so I have no info to use, In spring I will run the car and can do the calcs on my own.

Again thanks