[DHG-1934]

I know this has been discussed here before, but I can't think of any search terms relating to it that won't pull up hundreds of hits. (3.73, 4.10, top speed, etc. all being fairly common words here, I would think.)

The discussion I remember involved one of our members with more open flat highway than I've got available experimenting with the ACTUAL top speed of the car in 4th and 5th gears. I *believe* that that individual, or another similarly lucky individual had the luxury of trying the comparison with more than 1 rear end ratio.

The conclusion was that with 3.27 rear gears, your true top speed will be lower in 5th than 4th, and I think it was also demonstrated that with either 3.73 or 4.10 gears, 5th could achieve higher speeds than 4th.

If anyone has any *firsthand* info on this, or could point me to the thread in question, I'd appreciate it.

The reason I ask is so I can participate in a discussion elsewhere regarding how to get a higher top speed in 5th than 4th. I'm not posting the thread in question only because it seems that cross-forum flames spring up often when we do that. (And the topic that led to this question would almost definitely do so. :smile: )Neither will I claim the info as my own, though.

Here, however, is the final question in case I haven't been clear:

"What do you guys think it would take to get the overdrive 5th gear in a cam/stang to actually hit higher speeds than the 4th gear....like a large amount of high revving horses or more torque?"

Thanks!
Joe

 

[Mus408]

Well,let's do some math..... The 3.27,in 5th would equal out to a 2.19 gear. 3.73 would equal to a 2.49, and the 4.10 would be a 2.74 in 5th,5th gear being .67. The 4.6 most likely won't pull a ratio of 2.19 or 2.49 to Red Line RPM,with windspeed drag. Most likely the 4.10 would have the better chance.

 

[merc50]

gotta love the 410. it hits red in 5th but when i did i wasnt paying attention to the speed cause i had maddddd vibration and just wanted to slow down

 

[H1RESQ]

This link will tell you. It's a good calculator.

http://www.smokemup.com/utilities/calc/mph_range2.cfm

 

[DHG-1934]

Hey black sunshine: Was that redline in 5th with 4.10's and a STOCK engine? I'm under the impression that you're producing quite a bit more power than a stock engine in your current state. The gear calculator is a good idea, but for the purposes of this discussion, I need to know if a STOCK engine can do it. (Reach higher speeds in 5th than 4th)

Thanks!
Joe

 

[merc50]

Ive hit red in totally stock condition with ALOT OF HWY. And also with the 4.10's ( not quite stock)