Which gears and axles
Hey guys,
I am new to this forum and need some advice from a Mach1 owner who has been there done that. I have a 2003 Mach1/5speed with the following....
SLP Longtubes with o/r x-pipe & SLP Power-Flo mufflers. 95 mm CAI, electric water pump, aluminum flywheel, carbon fiber driveshaft, Steeda Tri-Ax, Maximum Motorsports clutch quadrant and firewall adjuster, Eibach Sportline springs, 2003 Cobra replica wheels 17x9 (front) & 17x10.5 (rear) with Nitto NT555 tires 275/40/17 (front) & 315/35/17 (rear). The car has a stout aftermarket clutch, but I don't know which it is.
I currently best a 8.24 @ 87mph in the 1/8 mile with 3.55 gears. This is a weekend only car and I want to go to 4.10 or 4.30 gears. I have heard some say that after going 4.10 that they wished that they had just gone 4.30 so I'm leaning that way.
1. Do any of you have 4.10 or 4.30 and run the 1/4 mile? How is your rpm in 4th at the finish line and more importantly, how quickly do you have to shift from 1st?
2. How about axles? Since I will probably not ever have more than 320 rwhp are 31 splines necessary or just a "peace of mind thing".
3. I have no idea what tune the car currently has so after the gear swap do I pay the big bucks for a dyno tune or buy a tuner with a canned tune?
Any advice is appreciated.