finally found the right gear

Blackblurr_00GT · March 26th, 2007, 12:26 PM

ok well after all your help on my last topic i was looking through my car and found a receipt for a gear swap the owner did and he or she put 3.90s in the rearend now i was just want ing to know now should i keep them or say put 3.73s in b/c I do more highway driving than i do in town and i want to try and get more miles with out going to a 3.23.thnx

GTsetGO · March 26th, 2007, 12:43 PM

keep the 3.90's. I used to do a lot of highway driving in my car and I have 4.10's and I was still getting 24 mpg.

02steedagt · March 26th, 2007, 02:47 PM

the 3.90's are fine. its not worth spending another 500 bucks to put the 3.73's in... it will take you a long time to make that up in gas.

Blackblurr_00GT · March 26th, 2007, 04:05 PM

ok will do but one more question how fats do you drive the highway b/c i try to keep the revs low so i only go like 55 60mph most of the time i dont want to over heat it or tear it up when i'm just driving norm.

oh and i havent told everyone what i have on my car yet so here it goes

C/L upper plenum
i think a homemade CAI (I dident make so??)
under drive pullies crank alt water pump
a mac pro chamber running into duel flowmaster 40s
sitting on 18inchs with sumitoma tires 285 35 rz28 rear,front 265 35 rz18
dont know what the rims are but they have a ZR in the middle of them
also i have a big ass throttle body but dont know what it is.

Blackblurr_00GT · March 26th, 2007, 04:19 PM

oh and my throttle is hard like when you first push on it feels like it stuck but then it pops over and everythingis allright i had some one tell me it was vacumm holding it closed but i dont know could be it only happens when its on.

Blackblurr_00GT · March 26th, 2007, 04:59 PM

and my abs light is on and I had it scanned but it said cannot connect to it or somthing like that, cant rember.

02steedagt · March 26th, 2007, 05:20 PM

hmmmm..... not too sure about your last two posts.... did you check all your springs on your tb? there's a thread around here somewhere where a guy had a spring fall off (can't remember where it was sorry) so check that out.

i drive about 70 on the highway (75 when the speed limit is 65) and with my 3.73's at 70mph im at 2100 rpm getting about 25-26 mpg.

why would you overheat? do you have a radiator problem? it's perfectly okay to run an engine at 2500-3000 rpms. they are designed to be worked, so it's okay to work them. you won't tear it up unless you redline it on every shift (even then maybe not if you keep your oil changed).

ILUVSTANGS · March 27th, 2007, 08:16 AM

HEY if they told you that your abs would not connect it could be that your brake computer system is not working. there could be several kinds of things to look at with this problem....if you can read a wiring schematic then you are in good shape...if not just remember the next time that you slam on your brakes that your not going to stop like you should....abs helps your brakes not to lock up....no abs you will skid!!!!...good luck and be careful......later

March 26th, 2007, 12:26 PM	#1
Blackblurr_00GT Regular Y2K GT 13.3@103 Join Date: Mar 2007 Location: Ada Oklahoma Posts: 350	finally found the right gear ok well after all your help on my last topic i was looking through my car and found a receipt for a gear swap the owner did and he or she put 3.90s in the rearend now i was just want ing to know now should i keep them or say put 3.73s in b/c I do more highway driving than i do in town and i want to try and get more miles with out going to a 3.23.thnx

March 26th, 2007, 12:43 PM	#2
GTsetGO SoMuchCoolerThanChiaGutt 2004 Mustang GT 12.88 @ 112 Join Date: Aug 2005 Location: Newport News, VA Posts: 7,437	keep the 3.90's. I used to do a lot of highway driving in my car and I have 4.10's and I was still getting 24 mpg. __________________ Have a WHITE99 kind of day. www.myspace.com/gtsetgo www.myspace.com/philfriedman www.myspace.com/robsidea A hard-on doesn't count as personal growth.

March 26th, 2007, 02:47 PM	#3
02steedagt Enthusiast Join Date: Jan 2007 Location: Solomons, MD Posts: 634	the 3.90's are fine. its not worth spending another 500 bucks to put the 3.73's in... it will take you a long time to make that up in gas. __________________ "America is all about speed. Hot, nasty, bad ass speed." Eleanor Roosevelt, 1936 http://img241.imageshack.us/img241/8...angcopysn8.jpg

March 26th, 2007, 05:20 PM	#7
02steedagt Enthusiast Join Date: Jan 2007 Location: Solomons, MD Posts: 634	hmmmm..... not too sure about your last two posts.... did you check all your springs on your tb? there's a thread around here somewhere where a guy had a spring fall off (can't remember where it was sorry) so check that out. i drive about 70 on the highway (75 when the speed limit is 65) and with my 3.73's at 70mph im at 2100 rpm getting about 25-26 mpg. why would you overheat? do you have a radiator problem? it's perfectly okay to run an engine at 2500-3000 rpms. they are designed to be worked, so it's okay to work them. you won't tear it up unless you redline it on every shift (even then maybe not if you keep your oil changed). __________________ "America is all about speed. Hot, nasty, bad ass speed." Eleanor Roosevelt, 1936 http://img241.imageshack.us/img241/8...angcopysn8.jpg

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March 26th, 2007, 04:05 PM	#4
Blackblurr_00GT Regular Y2K GT 13.3@103 Join Date: Mar 2007 Location: Ada Oklahoma Posts: 350	ok will do but one more question how fats do you drive the highway b/c i try to keep the revs low so i only go like 55 60mph most of the time i dont want to over heat it or tear it up when i'm just driving norm. oh and i havent told everyone what i have on my car yet so here it goes C/L upper plenum i think a homemade CAI (I dident make so??) under drive pullies crank alt water pump a mac pro chamber running into duel flowmaster 40s sitting on 18inchs with sumitoma tires 285 35 rz28 rear,front 265 35 rz18 dont know what the rims are but they have a ZR in the middle of them also i have a big ass throttle body but dont know what it is.

March 26th, 2007, 04:19 PM	#5
Blackblurr_00GT Regular Y2K GT 13.3@103 Join Date: Mar 2007 Location: Ada Oklahoma Posts: 350	oh and my throttle is hard like when you first push on it feels like it stuck but then it pops over and everythingis allright i had some one tell me it was vacumm holding it closed but i dont know could be it only happens when its on.

March 26th, 2007, 04:59 PM	#6
Blackblurr_00GT Regular Y2K GT 13.3@103 Join Date: Mar 2007 Location: Ada Oklahoma Posts: 350	and my abs light is on and I had it scanned but it said cannot connect to it or somthing like that, cant rember.

March 27th, 2007, 08:16 AM	#8
ILUVSTANGS Regular Join Date: Feb 2007 Posts: 62	HEY if they told you that your abs would not connect it could be that your brake computer system is not working. there could be several kinds of things to look at with this problem....if you can read a wiring schematic then you are in good shape...if not just remember the next time that you slam on your brakes that your not going to stop like you should....abs helps your brakes not to lock up....no abs you will skid!!!!...good luck and be careful......later

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