Professiona1 m0d Posted April 15, 2008 Report Share Posted April 15, 2008 Hey guys, I am looking for some input on which rear end gear I should go with. I am in the process of redoing the rear end, and this had been planned for sometime before I actually stripped a bunch of teeth off of my Richmond 4.10 gear (with an Eaton Posi), which happened a couple of weeks ago on the highway. Anyway, here is what I have: - Winters Performance 3.08 Quick Change Rear End (Tubbed) - Ford 10" 3.08 Ring and Pinion Gear - Steel Full Spool - Custom 35 Spline Steel Axles with 6 Lug Hubs - Custom Steel Tubes - 22 Spline Straight Cut Quick Change Gears - Gear Ratios Adjustable from 1.84 to 5.11 - Calvert Racing CalTracs Traction Bars - Rancho RS9000XL Series Adjustable Rear Shocks - Solid Rear Suspension - Mickey Thompson Classic Lock 16x12" Rims - M&H Racemaster Street & Strip (D.O.T.) 33.0/15.50-16LT Tires As you can see, it is a quick change rear end, I can change the gear ratio in a matter of 15 minutes. Obviously I will probably need to dial it in at the track, but to save myself some time, I was curious at what you all would recommend. I was thinking a 3.57 gear myself, as the 4.10 was previously too much for 32" street slicks (they were pretty hard rubber though). The only real thing that will change with this setup compared to the last time I was at the track are the slicks (softer and wider, pretty much the same height though), and then of course the gear choice. Other than that, all of the other factors are the same. Any input would be appreciated! Quote Link to comment Share on other sites More sharing options...
misterp Posted April 15, 2008 Report Share Posted April 15, 2008 I dunno, most 2WD trucks here are running 29" slick with 3.73 gears and that seems to be the quickest combo Mr. P. Quote Link to comment Share on other sites More sharing options...
SS_bnoon_SS Posted April 15, 2008 Report Share Posted April 15, 2008 Do you want to go through the lights in 3rd or 4th? And at what RPM? From there it's just math as to which rear gear you choose. Quote Link to comment Share on other sites More sharing options...
Professiona1 m0d Posted April 15, 2008 Author Report Share Posted April 15, 2008 (edited) Thanks for the replies, Yeah, I've done some math already, my target is roughly 200 RPM before redline (6200 RPM). And I do not want to be in overdrive when I cross that line, so definitely third. Short of doing a 4.53, I won't be anywhere near redline crossing the line in third. Edited April 15, 2008 by Professiona1 m0d (see edit history) Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted April 15, 2008 Report Share Posted April 15, 2008 I dunno, most 2WD trucks here are running 29" slick with 3.73 gears and that seems to be the quickest combo Mr. P. With stock 20" wheels and a 3.73 I trapped at 96.40 this past friday.....28" DRs are on their way to me now, I am expecting to be a bit quicker on those. Quote Link to comment Share on other sites More sharing options...
Professiona1 m0d Posted April 15, 2008 Author Report Share Posted April 15, 2008 Nice Fireman31! Post up your results after you get your new DRs! I have a set of 28" DRs myself, but unfortunately this new pumpkin sits too low to the ground for me to ever use them again, hence the taller tire of 33". Quote Link to comment Share on other sites More sharing options...
rivierakid55 Posted April 15, 2008 Report Share Posted April 15, 2008 30 inch dr's here with 4.56's and im trapping about 5300 rpms with my converter locked. Quote Link to comment Share on other sites More sharing options...
Professiona1 m0d Posted April 15, 2008 Author Report Share Posted April 15, 2008 Riviera, Thanks for your post about your run, that actually gave me some food for thought. Although now that brought up some questions for my setup, are you RWD, and do you spin much off the line? Quote Link to comment Share on other sites More sharing options...
rivierakid55 Posted April 15, 2008 Report Share Posted April 15, 2008 Riviera, Thanks for your post about your run, that actually gave me some food for thought. Although now that brought up some questions for my setup, are you RWD, and do you spin much off the line? yes rwd and still a little spin with 18psi...gonna try around 15 psi next time out. Quote Link to comment Share on other sites More sharing options...
Professiona1 m0d Posted April 16, 2008 Author Report Share Posted April 16, 2008 (edited) Ah, thank you for the extra info Riviera! My issue right now is pushing too much power for my suspension/tire setup. And now it's going to be worse with the bottle hooked up. I've been looking into a 4 Link along with back halving it to a full tub. I don't know what to do quite exactly. I am hoping the current suspension upgrades along with those meats will do the trick, but I am having doubts. Edited April 16, 2008 by Professiona1 m0d (see edit history) Quote Link to comment Share on other sites More sharing options...
12'SROCK Posted April 16, 2008 Report Share Posted April 16, 2008 With stock 20" wheels and a 3.73 I trapped at 96.40 this past friday.....28" DRs are on their way to me now, I am expecting to be a bit quicker on those. what rpm where you at the end of the 1/4? Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted April 16, 2008 Report Share Posted April 16, 2008 what rpm where you at the end of the 1/4? I don't remember, i'll check this friday at the track. Quote Link to comment Share on other sites More sharing options...
Fireman31 Posted April 20, 2008 Report Share Posted April 20, 2008 what rpm where you at the end of the 1/4? Art I am shifting 1-2 @ 6000rpm, 2-3 @ 6000rpm, and trapping at 4200-4300rpm in 3rd gear w/TC unlocked. Quote Link to comment Share on other sites More sharing options...
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