4.6L (1996-2004 Modular) MustangTechnical discussions on 1996-2004 4.6 Liter Modular Motors (2V and 4V) within. Sponsored by Cruizin Concepts
Welcome to Mustang Forums!
Welcome to Mustang Forums.
You are currently viewing our forum as a guest, which gives you limited access to view most discussions and access our other features. By joining our community, at no cost, you will have access to post topics, communicate privately with other members (PM), respond to polls, upload content and access many other special features. Registration is free, fast and simple, so please join our community today!
Like the title says, for those of you guys out there with a 5 speed and 4.10's whats the top speed you get out of 4th gear? My car should be down in the mid 12's this spring and I don't want 4.10's to be to much. I was originally going to go 3.90, but if I can run a 4.10 anf get away with it I will.
This ad is not displayed to registered or logged-in members. Register your free account today and become a member on Mustang Forums!
theyll be mickey thompson et streets, 275/40/17 aka a 25.661" tire. I used the gear calculator on summit and at 6k rpm it said 111.xx something I believe. I wasnt sure if this was dead accurate or not. Input?
Yup, you will be right on the edge with 4.10 gears (depending upon how high you are willing to spin it). You should be trapping at around 6000-6300rpm depending upon how much power you are making. Remember that those rpms are hanging for a short while in 4th since you are gaining speed more slowly on the big end (not like the quick cycles thru 1st and 2nd).
I ran 4.10 with 275-40-17 tires and trapped as high as 112mph, but I didn't want to push it any more than that.
I do run 3.90 gears now, but that is due to the mph I gained with nitrous (118+mph).
If you are really in doubt, I'd get 3.90 so you still have room to grow a little.
HiTech stageII cams, BBK Ceramic LongTubes, MAC ProChamber, Flowmaster50series, SteedaUDP, JLT CAI, MGW, SVT Focus Fuel Pump, H&R Race springs, Bilstein HD, MM CC Plates, MM FLSFC, Eibach Swaybars, MM LCA, MM Pan-hard, 3.91gears, AuburnPro diff, Moser31splines, 17x9 & 17x10.5 Bullitts, Dark smoked headlights w/ 55W HID, chin spoiler. 283rwhp/298torque (motor), 417rwhp/498torque (latest nitrous tune) firstname.lastname@example.org (motor w/ 1.77 60'), email@example.com (1.78 60')on nitrous.
This forum is owned and operated by Internet Brands, Inc., a Delaware
corporation. It is not authorized or endorsed by the Ford Motor Company and is not affiliated with the Ford
Motor Company or its related companies in any way. Ford® is a registered trademark of the Ford Motor