3.27 vs 3.73 vs 4.10 (Took A Couple Hrs 2 Complete... Enjoy)

04GTAMPA · August 5th, 2007, 11:22 PM

I have my 4th top out at 117mph, not recommended, but doable. Raised limiter and now with the cams and springs.... OMG, I see it coming.

Excellent write up, I will most likely look into swapping my 4.10 for 3.73... Getting up to 6800-7000 too fast and can't imagine when I start spraying again, which will be tomorrow.

TheBusher · August 6th, 2007, 03:58 PM

finaly03vert · November 19th, 2007, 10:48 AM

good to know someone did this first i started on it yesterday and got frustrated and quit thank u ur the man NERD FTW

Blackblurr_00GT · November 19th, 2007, 12:35 PM

Hey could you do it for a set of 3.55s with a t-45

gsjohnson · November 19th, 2007, 01:04 PM

Thanks for doing all those calcs. That's good information. I'm curious where 3.55s fall into it as well. I'll pay the 5 bucks...

hardhitter · November 19th, 2007, 07:03 PM

I have a stock 99 GT and at 80mph in 5th I'm at 2400 rpm. According to the chart I should be about 300 rpm lower. Is there something wrong with my car?

leebunnyz · November 19th, 2007, 07:06 PM

Originally Posted by hardhitter

I have a stock 99 GT and at 80mph in 5th I'm at 2400 rpm. According to the chart I should be about 300 rpm lower. Is there something wrong with my car?

no

gsjohnson · November 19th, 2007, 10:08 PM

Originally Posted by hardhitter

I have a stock 99 GT and at 80mph in 5th I'm at 2400 rpm. According to the chart I should be about 300 rpm lower. Is there something wrong with my car?

Tire and rim size may not be identical to what was used for the calculation. Different tire manufacturers sizes are not always identical. And then there is the speedo calibration issue. So, there are a few variables.

ujslost · November 19th, 2007, 10:26 PM

Im still curious as to WHY THE HELL ISNT THIS A STICKY?

00SlvrStang · November 20th, 2007, 02:16 PM

Originally Posted by hardhitter

I have a stock 99 GT and at 80mph in 5th I'm at 2400 rpm. According to the chart I should be about 300 rpm lower. Is there something wrong with my car?

you have a t-45, that chart is for the 3650.

TheBusher · November 20th, 2007, 02:25 PM

Originally Posted by 00SlvrStang

you have a t-45, that chart is for the 3650.

+1 The gear ratio in fifth for the T-45 is 0.67, for the T-3650 it's 0.62.

TheBusher · November 20th, 2007, 02:30 PM

If anyone has any special requests, just PM me your tanny, gears you want, and your tire size.

August 5th, 2007, 11:22 PM	#41
04GTAMPA Hardcore Enthusiast 1999 Mustang GT Join Date: Apr 2007 Location: Riverview, FL Posts: 2,260	I have my 4th top out at 117mph, not recommended, but doable. Raised limiter and now with the cams and springs.... OMG, I see it coming. Excellent write up, I will most likely look into swapping my 4.10 for 3.73... Getting up to 6800-7000 too fast and can't imagine when I start spraying again, which will be tomorrow. __________________

November 19th, 2007, 10:48 AM	#43
finaly03vert Regular 03 gt vert lights cant time it Join Date: Sep 2007 Location: Lincoln NE Posts: 290	good to know someone did this first i started on it yesterday and got frustrated and quit thank u ur the man NERD FTW __________________ NX EFI plate 250 jetcustom tune Eibach Pro-Kit Magnaflow cat back high flow cats, 3:55s, ported and polished heads, comp cams, forged pistons/ rods Curently building up 03 mach block w stage 3 port job. look for twins and more n2o

November 19th, 2007, 12:35 PM	#44
Blackblurr_00GT Regular Y2K GT 13.3@103 Join Date: Mar 2007 Location: Ada Oklahoma Posts: 366	Hey could you do it for a set of 3.55s with a t-45 __________________ Studies show that 92% of kids listen to rap. If you are one of the 8% who still listens to real music put this in your signature.

November 19th, 2007, 01:04 PM	#45
gsjohnson Enthusiast Join Date: Sep 2007 Location: Woodland Hills, CA Posts: 684	Thanks for doing all those calcs. That's good information. I'm curious where 3.55s fall into it as well. I'll pay the 5 bucks... __________________ 2004 Mustang GT The difference between a girlfriend and wife is about 50 pounds.

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August 6th, 2007, 03:58 PM	#42
TheBusher Hardcore Enthusiast 2002 Chevrolet Impala ??? Join Date: Jul 2007 Location: Fort Collins, Colorado Posts: 2,240

November 19th, 2007, 07:03 PM	#46
hardhitter Hardcore Enthusiast 1999 Mustang GT Join Date: Nov 2007 Location: Houston, TX Posts: 1,280	I have a stock 99 GT and at 80mph in 5th I'm at 2400 rpm. According to the chart I should be about 300 rpm lower. Is there something wrong with my car?

November 19th, 2007, 10:26 PM	#49
ujslost MM Fanatic Join Date: Mar 2007 Location: Albertville, AL Posts: 3,865	Im still curious as to WHY THE HELL ISNT THIS A STICKY?

November 20th, 2007, 02:30 PM	#52
TheBusher Hardcore Enthusiast 2002 Chevrolet Impala ??? Join Date: Jul 2007 Location: Fort Collins, Colorado Posts: 2,240	If anyone has any special requests, just PM me your tanny, gears you want, and your tire size.

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