Opinion: Shift kit or 3.73s December 27, 2007, 02:52:44 AM I have acquired enough cash flow to do one of the aforementioned, not both.Which do you think will the 5.0HO with duel exhaust + headers(I say this because of powerband) would be happier with, track wise.3.73s(Or other preferred gear, please, through me some advice) or a shift kit, I'm assuming the gears, but am asking because I know people are more familiar with these motors and there output @ engine speed better then me.Future mods would most likely be only 1.7 roller rockers and a better upper intake.Now the local track is an 1/8th and I doubt I'll make it much to the 1/4 mile track, since it's a bit of a jog. Quote Selected
Opinion: Shift kit or 3.73s Reply #1 – December 27, 2007, 04:17:39 AM gearing for sure.for the track 4.10 would work well. Quote Selected
Opinion: Shift kit or 3.73s Reply #2 – December 27, 2007, 04:44:17 AM shift kit 1st keep the life in the tranny also a cooler gears can always wait Quote Selected
Opinion: Shift kit or 3.73s Reply #3 – December 27, 2007, 05:42:18 AM Quote from: Innes;194625shift kit 1st keep the life in the tranny also a cooler gears can always waitI've already got a cooler seperate from the radiator waiting to go in. :D...but, that's how I was thinking, shift kit = firmer shifts, less slippage, the usual... Quote Selected
Opinion: Shift kit or 3.73s Reply #5 – December 27, 2007, 07:38:00 AM Are you running the stock so or ho???If so i would not go more than 3.27's do to the fact that :A: You'll run out of useable motor very quickly with 3.73s,4:10s are out of the question.B:The highest reliable speedo gear for your trans is 21tooth(accurate with 3.27s),you would need a 23-24tooth to make your speedo accrate with 3.73's(accuracy not possible with 4:10s).I used to run 3.27s with an so and it was a huge jump in performance and it actually gave me better fuel economy for not having to be in the throttle as much to get upto speed.If you do gears don't forget to adjust your trans cable afterwards or your shifts will be way to early. Quote Selected
Opinion: Shift kit or 3.73s Reply #6 – December 27, 2007, 08:12:28 AM Quote from: dominator;194634Are you running the stock so or ho???If so i would not go more than 3.27's do to the fact that :A: You'll run out of useable motor very quickly with 3.73s,4:10s are out of the question.B:The highest reliable speedo gear for your trans is 21tooth(accurate with 3.27s),you would need a 23-24tooth to make your speedo accrate with 3.73's(accuracy not possible with 4:10s).I used to run 3.27s with an so and it was a huge jump in performance and it actually gave me better fuel economy for not having to be in the throttle as much to get upto speed.If you do gears don't forget to adjust your trans cable afterwards or your shifts will be way to early.With the right tranny(7 tooth output) a 21 tooth gear works fine W 3.73s, course no Fox Tbird had such a tranny...For 1/8 mi racing 3.73s would be a good choice... Probably still just barely get into 3rd... Quote Selected
Opinion: Shift kit or 3.73s Reply #7 – December 27, 2007, 09:40:19 AM I would go shift kit, the gears would cause to much strain on a stock trans with milage on it. Quote Selected
Opinion: Shift kit or 3.73s Reply #8 – December 27, 2007, 10:45:30 AM I'd go with 3.73s. Then again my engine makes power all the way up to the 5,000 rpm shift point. A trans with out a shift kit will handle the 3.73s fine. Just adjust the TV cable so it shifts at the right time. Trust me if you don't it will shift too early Quote Selected
Opinion: Shift kit or 3.73s Reply #9 – December 27, 2007, 11:48:17 AM That is true tom,but i didn't think he had a stang trans.I run a stang trans with 3.73s and a 21tooth and it's dead accurate. Quote Selected
Opinion: Shift kit or 3.73s Reply #10 – December 27, 2007, 12:13:06 PM I say gears, 3.73-4.10's, I had 4.10 in my stang and loved them, was great on gas too, (around town improved, but I did lose a little on the highway)Your tranny will be fine with the gears til you can afford to throw a shift kit in it, unless you pound the hell out of it.... The gears will actually be eaasier on the drivetrain, as it will take less effort to get the car up to speed as Chris said. Quote Selected
Opinion: Shift kit or 3.73s Reply #11 – December 27, 2007, 12:46:40 PM Quote from: dominator;194676That is true tom,but i didn't think he had a stang trans.I run a stang trans with 3.73s and a 21tooth and it's dead accurate.What did you think I had?AOD = Cougar, Thunderbird and Stang trans... Quote Selected
Opinion: Shift kit or 3.73s Reply #12 – December 27, 2007, 12:47:46 PM Quote from: dominator;194634Are you running the stock so or ho???If so i would not go more than 3.27's do to the fact that :A: You'll run out of useable motor very quickly with 3.73s,4:10s are out of the question.B:The highest reliable speedo gear for your trans is 21tooth(accurate with 3.27s),you would need a 23-24tooth to make your speedo accrate with 3.73's(accuracy not possible with 4:10s).I used to run 3.27s with an so and it was a huge jump in performance and it actually gave me better fuel economy for not having to be in the throttle as much to get upto speed.If you do gears don't forget to adjust your trans cable afterwards or your shifts will be way to early.It's a relatively stock HO, It's a toss up between 3.55(if offered, more familiar with chevy) or 3.73s. Quote Selected
Opinion: Shift kit or 3.73s Reply #13 – December 27, 2007, 12:56:10 PM Quote from: 88XR7;194686What did you think I had?AOD = Cougar, Thunderbird and Stang trans...um no chief, the mustang has a different drive gear in the tranny, for the speedo.... hence the reason he asked if it was a Stang aod.... Quote Selected
Opinion: Shift kit or 3.73s Reply #14 – December 27, 2007, 01:07:02 PM Quote from: 1WLD BRD;194688um no chief, the mustang has a different drive gear in the tranny, for the speedo.... hence the reason he asked if it was a Stang aod....Ahh, i didn't realize he meant that differentiating the trannys. Quote Selected
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