I have 4.10s but....
- Thread starter JTGrant
- Start date
Five Oh Brian
Member
The 4.30's in my 03 Mach 1 made absolutely no noise (still don't) and were FRPP gears. I work at a Ford dealership, and the tech that did the install is awesome. Shimmed them correctly and the install was done right the first time. He's done a few gear swaps for me now. I think the installer makes a huge difference in the outcome of the swap.
I was looking at the gear-to-rpm-to-mph chart that I have in excel format. (I can post it if anyone would like a copy) I need to rev to 6500-6600 rpm to acheive 60 mph in second gear with the current stock wheels and the Nitto 555s. I guess these gears are more for the Mach1s and the Cobras given that they are designed to rev higher. I really don't feel comfortable about about reving the car that high everytime I race it. If shifting around the stock redline I really done see how the 4.30 would be faster than the 4.10s (Correct me if I am wrong). Still not sure about future mods, it all depends on what the redesigned Mustang's look like and what powerplant they may have. So I am still not 100% sure about the future power level of me car. Just keeping it simple right know.
dbrufus1234
Member
- Sep 10, 2006
- 92
- 1
- 8
Again, what RPM are you at when you go through the traps? I'm assuming with 4.10's your in 4th when you hit the traps, correct?
I don't remember the RPM through the traps, it's been awhile since I have been to the quater mile. Since I moved back home after graduating, there is no longer a track here anymore. They are plaining a track around here very soon. My trap speed was between 105-106 with my current mods minus the driveshaft, UDP, new tires, and the Brenspeed/Bamachips tunes. I would have to look at the chart to estimate the RPM. Yes I would shift to 4th.
kooldawg6
mine works really well and can take a fair amount
With the 27.2" tire I was crossing the line at around 5200 RPM in 4th. I had my shift points set for 6500 RPM.
kooldawg6
mine works really well and can take a fair amount
spyder7724 is running the 4.30s. I can't remember what size tire he runs, but it is quite tall. Perhaps PM him.
BREDn07
New Member
i should have read this thread before i posted one in the talk section...
i'm assuming it's advisable to do a re-flash for 4.10's once installed and change the redline to about 6800...i'm running 285/35/18's...is that right!
i'm assuming it's advisable to do a re-flash for 4.10's once installed and change the redline to about 6800...i'm running 285/35/18's...is that right!
If Brenspeed did you tune, the default redline should be 6800. That's what both my cars were set at automatically.
