Have any of you with 4.10 gears gone 140MPH? How was it if you did? Did the gears make a lot of noise or did you not notice anything? I am trying to decide between 3.73 and 4.10. Thank you.
Has anyone done 140MPH with 4.10 gears?
- Thread starter Schlitz-420
- Start date
05MGT said:Plan on going 140mph?
I don't so 4.10s do me just fine.
Very rarely but that is what i would consider the highest speed i will likely want to attain and wondered how the gears would affect that if at all. Plus the wind on this car at 140MPH is brutal.
TGJ said:
How much of a diff would it make to move down to 3.73? Or is anything over 110 best with 3.55 or higher?
knight_rider69
New Member
it's possible
And for the record it could have gone more, but I ran out of road. It was revving at about 5500 in 5th gear.
If I had to do it again, I'd probably go with 3.73 though. For future supercharging needs.
And for the record it could have gone more, but I ran out of road. It was revving at about 5500 in 5th gear.
If I had to do it again, I'd probably go with 3.73 though. For future supercharging needs.
I've done 130+ with 3:55's and didn't have a problem.
but I wasn't checking revs too often. I was checking to see how fast traffic was coming up on me. I can't stay at that speed for long, so the last thing I'm worried about is gears. heck at that speed I'm reheasing to explain why I was going that fast in the 1st place.
but I wasn't checking revs too often. I was checking to see how fast traffic was coming up on me. I can't stay at that speed for long, so the last thing I'm worried about is gears. heck at that speed I'm reheasing to explain why I was going that fast in the 1st place.
knight_rider69 said:it's possible
And for the record it could have gone more, but I ran out of road. It was revving at about 5500 in 5th gear.
If I had to do it again, I'd probably go with 3.73 though. For future supercharging needs.
Right on, thanks for the info. The last time i looked at the tach i was pulling 4000RPM at about 125-135.
wally10 said:
You are almost better off to rehearse evasive maneuvers at that speed. In MI anything over 20MPH over the limit is considered reckless driving and is punishable by incarceration.
I did some calculating:
4.10s, 4th gear @ 140 MPH = 7350 RPM
4.10s, 5th gear @ 140 MPH = 4550 RPM
I have never verified if a GT will pull that to that RPM in 5th and I know you won't get to 140 in 4th.
3.73s, 4th gear @ 140 MPH = 6680 RPM
3.73s, 5th gear @ 140 MPH = 4150 RPM
All of the RPM's are rounded off to the nearest 10. Again they are not the exact RPM you may see due to the Ford Tach not being 100% accurate and variations of the actual tire size.
4.10s, 4th gear @ 140 MPH = 7350 RPM
4.10s, 5th gear @ 140 MPH = 4550 RPM
I have never verified if a GT will pull that to that RPM in 5th and I know you won't get to 140 in 4th.
3.73s, 4th gear @ 140 MPH = 6680 RPM
3.73s, 5th gear @ 140 MPH = 4150 RPM
All of the RPM's are rounded off to the nearest 10. Again they are not the exact RPM you may see due to the Ford Tach not being 100% accurate and variations of the actual tire size.
Yes I have, this past weekend; well to be 100% honest it was 138 or so. The car was rock solid. the only thing I could hear was the scream from my pipes, the wind and my heart!
Would not change a thing. Hood, steadyness, steering wheel, etc was dead on. No probs except to short a road.
Would not change a thing. Hood, steadyness, steering wheel, etc was dead on. No probs except to short a road.
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