3.73 gears now.... swap to 3.27 or 3.55's?? - Ford Mustang Forums : Corral.net Mustang Forum
 
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post #1 of 34 Old 03-30-2009, 10:26 AM Thread Starter
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3.73 gears now.... swap to 3.27 or 3.55's??

What are most of you guys running??

I have a Tremec 3550 and 3.73's now.... but I do have a set of 3.27's laying around that I was thinking about popping in or should I go for some 3.55's???


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post #2 of 34 Old 03-30-2009, 10:44 AM
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I had 373s and a tko/blower.

Now i have 327s/tko and turbo.

Love it dude.


Precision 67mm turbo, this and that.
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post #3 of 34 Old 03-30-2009, 11:02 AM
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With a 26" tire, 3.27's would be a great fit.

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post #4 of 34 Old 03-30-2009, 11:03 AM
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i switched from 3.73 to 3.27. best thing i did.

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post #5 of 34 Old 03-30-2009, 05:45 PM
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Same here. I had 3.73's with a vortech before. Now I have 3.27's with the turbo and love it!

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post #6 of 34 Old 03-30-2009, 07:47 PM
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X-5 3.27
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post #7 of 34 Old 03-30-2009, 09:24 PM
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X-5 3.27
yes...and yes, 3.27
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post #8 of 34 Old 04-02-2009, 10:18 AM
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Hey bro, you still in cali? Or are you back in michigan now?


hit me up!

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post #9 of 34 Old 04-19-2009, 12:02 AM
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3.27 if I had the option to change. I've got a 3.55 now, but would be a little better off with a 3.27 I think...

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post #10 of 34 Old 04-19-2009, 08:23 PM
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Im thinking of swapping to 3:27, Im currently running 3:55's on the street with 255/50 R16 M/T Drag radials. I have not been to the track yet. How much gain would the 3:27 give me?


Stock block, GT40 heads, Explorer intake, 67mm, 10lbs, 431HP 497TQ on 110 octane. 12.01 @ 123
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post #11 of 34 Old 04-19-2009, 08:51 PM
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I have 3.27 @ 4,000+ lbs. looking at some 3.08 @ 3200 lbs.

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post #12 of 34 Old 04-22-2009, 04:24 PM
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Garage
I dumped the 373s and replaced them with the 327's. All good here.
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post #13 of 34 Old 04-22-2009, 05:14 PM Thread Starter
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Well 327's looks like the way to go and that's a good thing because I have some just laying around.

1993 Notch: Mexican 347 Hellion TFS heads/GT40 intake/Custom Cam Tremec 3550
1992 GT Convert: Green/Blk interior, 10th anniversary cobra's mostly suspension mods.

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post #14 of 34 Old 04-22-2009, 06:10 PM
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3.27s here too.
Erich

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post #15 of 34 Old 04-22-2009, 07:54 PM
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3.73's na and with blower and twin turbo
then 355's with twins
now 327's and twins
really thinking about 308s
but for your question 327's are the ticket!!

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post #16 of 34 Old 04-24-2009, 10:26 PM
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I just switched from a 355 to a 327.Both on a 28'' tire,Car ran exactly the same at the track.other than the rpm through the traps was 6800-690 0compaired to the 7200 -7300 with the 355's.

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post #17 of 34 Old 04-25-2009, 11:50 PM
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3.27's w/ n/a 315rwhp, and its a little sluggish in 3rd, but i really like the mpg!

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post #18 of 34 Old 04-28-2009, 12:33 PM
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I just switched from a 355 to a 327.Both on a 28'' tire,Car ran exactly the same at the track.other than the rpm through the traps was 6800-690 0compaired to the 7200 -7300 with the 355's.
ive been messin with the rpm calculator tryin to decide on what gear based on what u guys are sayin. I cant seem to se how ur rpms were that high,whats ur final gear in ur tranny when u cross the line? Would 3.55's be too much,y does every1 have 3.27's or want them?
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post #19 of 34 Old 04-28-2009, 04:50 PM
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ive been messin with the rpm calculator tryin to decide on what gear based on what u guys are sayin. I cant seem to se how ur rpms were that high,whats ur final gear in ur tranny when u cross the line? Would 3.55's be too much,y does every1 have 3.27's or want them?
The car is pretty quick.So Im sure that will get some rpm in a hurry.1.1 is 3rd gear.355 was fine in my car.I just didnt want to come througgh that high.

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post #20 of 34 Old 04-28-2009, 05:56 PM
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I just switched from a 355 to a 327.Both on a 28'' tire,Car ran exactly the same at the track.other than the rpm through the traps was 6800-690 0compaired to the 7200 -7300 with the 355's.
I would think the 3:55 would be best for a 28'' tire.

Stock block, GT40 heads, Explorer intake, 67mm, 10lbs, 431HP 497TQ on 110 octane. 12.01 @ 123
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post #21 of 34 Old 04-28-2009, 06:02 PM
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I would think the 3:55 would be best for a 28'' tire.
Im sure it would be if I wanted to spin it that high.

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post #22 of 34 Old 04-28-2009, 08:56 PM
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I would think the 3:55 would be best for a 28'' tire.

what tire u running? how did u get the rpms that high on stock computer? u run stock short block?
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post #23 of 34 Old 04-29-2009, 01:50 AM
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Anyone ever tried 3.08 with a C4? I'm about to purchase another BnG kit with the T70 for my 79'. I have 3.73's in the car now NA but have another rearend with 3.08 so I thought I might try that. This is for my stripped 79' coupe which is very light.
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post #24 of 34 Old 04-29-2009, 12:17 PM
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3.27 and a T-5 here.

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post #25 of 34 Old 05-01-2009, 12:32 AM
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so 3.27's are the best then? what rpm & mph are u guys crossin thru the lights at? what would 3.55's do different?
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post #26 of 34 Old 05-01-2009, 12:48 AM
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What are most of you guys running??

I have a Tremec 3550 and 3.73's now.... but I do have a set of 3.27's laying around that I was thinking about popping in or should I go for some 3.55's???
How much rpm will you be crossing the line at?

I use 3.27s and they work best in my car with a 2.10 th400.
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post #27 of 34 Old 05-01-2009, 12:52 AM
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so 3.27's are the best then? what rpm & mph are u guys crossin thru the lights at? what would 3.55's do different?
7600, and 168 with the 3.55s

I put the 3.27s back in and its so much easier to drive. I made some other changes so the et and mph isnt where its supposed to be. I need more testing.
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post #28 of 34 Old 05-01-2009, 01:00 AM
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so 3.27's are the best then? what rpm & mph are u guys crossin thru the lights at? what would 3.55's do different?
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post #29 of 34 Old 05-01-2009, 07:46 AM
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u guys using a T5 or similar tranny? How u gettin the rpms that high on stock ecm?
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post #30 of 34 Old 05-01-2009, 08:14 AM
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u guys using a T5 or similar tranny? How u gettin the rpms that high on stock ecm?
Th400,

Stock ECM? I have your DFI....used to have a Gen 6 though.
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post #31 of 34 Old 05-01-2009, 10:04 AM
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Same ^^^

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post #32 of 34 Old 05-01-2009, 02:43 PM
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will i know what ur using. I just wanted to know bout these guys that have a similar setup as i will have,5 speed,stock shortblock,not many mods,ect so i know what gear to run,i can only shift at 6000-6200 unless i get a extender.
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post #33 of 34 Old 05-01-2009, 05:47 PM
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u guys using a T5 or similar tranny? How u gettin the rpms that high on stock ecm?
Th400 stock computer...sct tuned By KenB at Modular depot

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post #34 of 34 Old 05-01-2009, 09:02 PM
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will i know what ur using. I just wanted to know bout these guys that have a similar setup as i will have,5 speed,stock shortblock,not many mods,ect so i know what gear to run,i can only shift at 6000-6200 unless i get a extender.
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