2 1/2 or 3'' spintech exhaust

9

93cobra12

New Member

Nov 21, 2003

531

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0

Seatte, WA

Jan 19, 2004

#1

• Jan 19, 2004

• #1

i got a 331 w/ bbk long tube headers, v2-sq trim.. I know my motor can use the 3'' x pipe , but im trying to decide if i want to use the 2 1/2 to create more velocity? whatta ya guys think?

which would serve a better purpose for my motor.. this is for the spintech exhaust.. thanks !! combo below

331
185 afr heads
crower cam
tfs track heat intake
v2-sq stock pulley
bbk long tube headers

 

2

2NDTIME

Founding Member

Nov 5, 2002

334

0

0

Kansas City

Jan 19, 2004

#2

• Jan 19, 2004

• #2

I have read that the 2 1/2 is not a restriction till around 500hp. If you had free flowing spintech mufflers I don't think it would be a problem.

Or put some 3" cutouts before the mufflers for track duty.

 

K

ka0tyk

Founding Member

Oct 10, 2001

1,610

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Los Angeles, CA

Jan 19, 2004

#3

• Jan 19, 2004

• #3

i agree that 3" could be a little too big and hurt you on the backpressure and low end torque... on the other end it would help with high end hp... its a win/lose situation...

 

90mustangGT

I felt sorry for girls because

Founding Member

Jan 15, 2002

2,773

17

89

Dallas, GA

Jan 19, 2004

#4

• Jan 19, 2004

• #4

Going from a 3" system into a 2.5" system would cause nothing but more backpressure, it would make more sence going from 2.5 into a 3" catback. Just go 3" all the way.

 

JadeFalcon

Founding Member

Mar 28, 2002

1,924

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0

Arlington, TX

Jan 19, 2004

#5

• Jan 19, 2004

• #5

3", I run 3" spintech exhaust and it sounds great and I gained low end power from a stock h-pipe. PEople will always seem fit to argue you loose low end, but with the amount of high end you get from the change that dosent even matter.

 

ironmedic

New Member

Mar 18, 2003

1,361

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Puyallup, WA

Jan 19, 2004

#6

• Jan 19, 2004

• #6

i agree with jade, im running spintechs and i love them! i feel like i lost torque but i gained a nice sound and more HP somewhat.

 

9

93cobra12

New Member

Nov 21, 2003

531

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Seatte, WA

Jan 19, 2004

#7

• Jan 19, 2004

• #7

I do have the bbk long tube for torque and an aluminum flywheel with 373 gears plus a 331.. I dont think my low end is going to be hurting that much.. I got a nice cam for that set up... So you guys think 3'' will do me good huh...

Anybody running a similiar combo?

 

9

93cobra12

New Member

Nov 21, 2003

531

0

0

Seatte, WA

Jan 19, 2004

#8

• Jan 19, 2004

• #8

hey Iron, what is ur combo? what size exhaust do you have?