UnderDrive Pulleys

Lumoon · March 16th, 2011, 07:12 PM

Car:2001 Mustang V6 (3.8L)
Trans: Auto
Current Mods: K&N CAI, BBk Shorty Headers, Dual Exhaust w/ Flow 40s, Custom retune by local speed shop (lifted top end and changed f/a ratio allowances)
Dyno: Still need one.

So with all that info, here's my questions.

I have read and heard from other places and people that my next logical mod should be either a transkit (see other topic) or a UD pulley set-up. So my next logical course of action? Ask you guys and girls.

What are the benifits of UD pulleys, who's a good manufacturer and does it require another retune? What should be "underdriven"? Should anything be Over Driven? Cost effective? Gains?

Additional info: I use my car as a daily driver and I would like to be able to go to the track and post decent numbers for a n/a v6

6ER THEN I 8ER! · March 16th, 2011, 07:14 PM

not worth it for the money...maybe a 5ish hp gain which for the price isn't much

with your current mods you should be able to hit a consistant mid to high 15...well maybe a consistant mid 15 if you had gears & a tlok

Lumoon · March 16th, 2011, 08:59 PM

is the 8.8 rear end of a gt a good swap-out for the stock rear end of the v6?

bluesmokesixxer · March 16th, 2011, 09:44 PM

Originally Posted by Lumoon

is the 8.8 rear end of a gt a good swap-out for the stock rear end of the v6?

It is if you think you might need that extra strength down the road, but right now it would only be extra weight and lots of money.

6ER THEN I 8ER! · March 16th, 2011, 10:05 PM

Originally Posted by Lumoon

is the 8.8 rear end of a gt a good swap-out for the stock rear end of the v6?

if you can find one for around $100-150 it's not a bad swap, but it's not needed at all for 97% of v6's on this site

dark_horse · March 16th, 2011, 11:36 PM

i love my under drive pulley, well plus i needed a new harmonic balancer anyways and got it from a member for $120

Lumoon · March 17th, 2011, 09:15 PM

any good inexpensive tlok rear ends or positracks?

Also who makes the highest bang of the buck UD pulley kits?

mustangmike! · March 17th, 2011, 10:16 PM

i really dont know why everyone says dont get an 8.8 if you dont need it because of the wieght ... that wieght will help with traction ... id be willing to bet in a 1/4 that more traction will be better then a little extra wieght ... you need a good start ...

6ER THEN I 8ER! · March 17th, 2011, 11:00 PM

Originally Posted by mustangmike!

i really dont know why everyone says dont get an 8.8 if you dont need it because of the wieght ... that wieght will help with traction ... id be willing to bet in a 1/4 that more traction will be better then a little extra wieght ... you need a good start ...

not from what i've seen...my friend had an 8.8 in his v6...and it didn't show to be any quicker on the 1/8th with the same mods besides that..we were both auto as well

sometimes he could put a 10th of a second on me...however i'm convinced that if a v6 with a tlok in a 7.5 would gain that 10th back

mustangmike! · March 18th, 2011, 12:15 AM

Then that extra wieght really didnt hurt anything

Rich J · March 18th, 2011, 12:22 AM

A V6 Mustang can break a 7.5" with stock power..... Just saying.

6ER THEN I 8ER! · March 18th, 2011, 12:33 AM

Originally Posted by mustangmike!

Then that extra wieght really didnt hurt anything

but it didn't help...im also pretty damn sure a 7.5 with a tlok will do better then gain a 10th on the track

think about it like this...for every 100lbs you add you loose a 10th of a second...and when you remove 100lbs you gain a 10th on average..he may have gained a 10th from the tlok in the 8.8...but lost time for the extra 100lbs he added...it's very easy to understand

GreenMustang00 · March 18th, 2011, 12:42 AM

A properly built 7.5 will hold good power..

6ER THEN I 8ER! · March 18th, 2011, 12:44 AM

Originally Posted by GreenMustang00

A properly built 7.5 will hold good power..

if i remember correctly CT didn't have to replace his 7.5 until he snapped it a bit over 400rwhp

mustangmike! · March 18th, 2011, 12:55 AM

you can put well over 400 hp on a stock 7.5 ...
you can also break one with a stock v6 ...
depends on how you drive it ...

GreenMustang00 · March 18th, 2011, 12:58 AM

Originally Posted by 6ER THEN I 8ER

if i remember correctly CT didn't have to replace his 7.5 until he snapped it a bit over 400rwhp

Wouldn't doubt that one bit. On street tires I don't see a 7.5 breaking easily even at the track. I am willing to bet mine won't snap at the track in April with even my 100 shot

Dreamer · March 18th, 2011, 04:49 PM

hmmmm does anyone know how to purposely break one?
Im asking so I know to AVOID doing such an action.

mustangmike! · March 18th, 2011, 06:42 PM

lol

i would answer but i was acting stupid when i did it ... knowing i shouldnt have done what i did and did it anyways ... paid the consequence ...

GreenMustang00 · March 18th, 2011, 07:13 PM

Originally Posted by Dreamer

hmmmm does anyone know how to purposely break one?
Im asking so I know to AVOID doing such an action.

Depends, you want to take a chance at blowing your trans?

March 16th, 2011, 07:12 PM	#1
Lumoon Regular 2001 Mustang V6 Its a V6 Join Date: Mar 2011 Location: Fairfield, Ohio Posts: 460 iTrader: 0 reviews	UnderDrive Pulleys Car:2001 Mustang V6 (3.8L) Trans: Auto Current Mods: K&N CAI, BBk Shorty Headers, Dual Exhaust w/ Flow 40s, Custom retune by local speed shop (lifted top end and changed f/a ratio allowances) Dyno: Still need one. So with all that info, here's my questions. I have read and heard from other places and people that my next logical mod should be either a transkit (see other topic) or a UD pulley set-up. So my next logical course of action? Ask you guys and girls. What are the benifits of UD pulleys, who's a good manufacturer and does it require another retune? What should be "underdriven"? Should anything be Over Driven? Cost effective? Gains? Additional info: I use my car as a daily driver and I would like to be able to go to the track and post decent numbers for a n/a v6

March 17th, 2011, 10:16 PM	#8
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	i really dont know why everyone says dont get an 8.8 if you dont need it because of the wieght ... that wieght will help with traction ... id be willing to bet in a 1/4 that more traction will be better then a little extra wieght ... you need a good start ... __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

March 18th, 2011, 12:15 AM	#10
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	Then that extra wieght really didnt hurt anything __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

March 18th, 2011, 12:22 AM	#11
Rich J I'm doing it wrong 04 Grand Cherokee Join Date: Mar 2010 Location: South Eastern, Mass Posts: 5,211 iTrader: 0 reviews	A V6 Mustang can break a 7.5" with stock power..... Just saying. __________________ Formerly known as Demon_54 "I feel the same way about disco as I do about herpes." - Hunter S. Thompson

March 18th, 2011, 12:42 AM	#13
GreenMustang00 1 Wheel Peel 2000 Mustang 393w 2001 Mustang GT Vert Join Date: Mar 2010 Location: Wisconsin Posts: 3,583 iTrader: 4 reviews	A properly built 7.5 will hold good power.. __________________ 2000 393w Swapped Vert 2001 GT Vert 2002 Six Banger

March 16th, 2011, 07:14 PM	#2
6ER THEN I 8ER! Banned Join Date: Apr 2007 Location: Portland, TN Posts: 17,515 iTrader: 3 reviews	not worth it for the money...maybe a 5ish hp gain which for the price isn't much with your current mods you should be able to hit a consistant mid to high 15...well maybe a consistant mid 15 if you had gears & a tlok

March 16th, 2011, 08:59 PM	#3
Lumoon Regular 2001 Mustang V6 Its a V6 Join Date: Mar 2011 Location: Fairfield, Ohio Posts: 460 iTrader: 0 reviews	is the 8.8 rear end of a gt a good swap-out for the stock rear end of the v6?

March 16th, 2011, 11:36 PM	#6
dark_horse Regular 00 3.8 Mustang Slow@slow Join Date: May 2010 Location: Shelbyville, Kentucky Posts: 477 iTrader: 2 reviews	i love my under drive pulley, well plus i needed a new harmonic balancer anyways and got it from a member for $120

March 17th, 2011, 09:15 PM	#7
Lumoon Regular 2001 Mustang V6 Its a V6 Join Date: Mar 2011 Location: Fairfield, Ohio Posts: 460 iTrader: 0 reviews	any good inexpensive tlok rear ends or positracks? Also who makes the highest bang of the buck UD pulley kits?

March 18th, 2011, 12:55 AM	#15
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	you can put well over 400 hp on a stock 7.5 ... you can also break one with a stock v6 ... depends on how you drive it ... __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

March 18th, 2011, 04:49 PM	#17
Dreamer Regular 2009 V6 Join Date: Sep 2008 Location: Brooklyn, NY Posts: 397 iTrader: 0 reviews	hmmmm does anyone know how to purposely break one? Im asking so I know to AVOID doing such an action.

March 18th, 2011, 06:42 PM	#18
mustangmike! I Post Entirely Way Too Much 2004,1994,1967 14.37 @ 96 Join Date: Aug 2008 Location: Texas Posts: 6,018 iTrader: 1 reviews	lol i would answer but i was acting stupid when i did it ... knowing i shouldnt have done what i did and did it anyways ... paid the consequence ... __________________ 227whp N/A V6 Now w/ 8th Mile 8s ! How To Jmod Your Late Model 4R70W

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