Tailpipe options for 90 GT

Hi all. I'm researching tailpipe options for my 90 GT, and have discovered Flowmaster now makes one thats 3 inches diameter for my car. This interests me, but will I encounter any fit problems? I'm guessing some sort of adapter would be placed between the muffler (2.5 inches) and the 3 inch pipes, and they claim to use the factory hangars and such. My mufflers are (I think) in pretty good condition, but I'm not opposed to replacing them if necessary for the pipes. I was gonna contact Flowmaster about this, but they don't take tech questions by email (and phoning isn't convenient for me). Therefore I once again turn to you, and welcome your experiences and/or advice. Thanks very much, and best wishes.

Randy

We're living in a world that's been pulled over our eyes to blind us from the truth. Where are you, white rabbit?

Reply to
Randy Pavatte
Loading thread data ...

Randy,

Note: Stock piping is 2 1/4" in diameter.

3", IMO, is going to look geeky, especially with the GT's lower rear valance. If you insist on getting a larger diameter pipe, just go with a more stock looking 2 1/2" diameter and us a factory-style (for GTs) angled cut turn down.

Patrick

Reply to
NoOption5L

well i would say if you trying to improve performance you should scrap the gt kit and go for the lighter lx kit. thats about 400 pound difference. i have the lx kit with 3 inch pipes with 2 1/2 in tips. looks and sounds great.

Reply to
oneadvent

It may look and sound great, but 3" pipes on a 5-liter, unless it's pumping out HUGE amounts of horsepower, is going to hurt performance.

2 1/2" is more than plenty for most street driven 5-liter cars.

Patrick

Reply to
NoOption5L

how would that hurt performance? the extra weight made up by the lack of gt kit.

explain yourself please.

and by the way, it does sound GREAT.

Reply to
oneadvent

Explain your reference of "gt kit" Are you speaking of the extara weight the ground effects a GT carries vs a plain LX body. Or are you talking some sort of GT exhaust system? ????

I'm only talking about the use of 3" exhaust pipes on a 5-liter. 3" piping is WAY too big for the average street 5-liter car. 3" piping is so big that speed of the gases is slowed down, hurting performance.

Patrick

Reply to
NoOption5L

i mean the ground effects and the bumpers. leave the spoiler. i love the look.

i understand that. i am wondering what kinds of mods he is thinking of. is it going to be twin turbo charged? if so they could help. is he trying for looks? or style? cause they sound great. but for small changes that don't hurt the pocket book, it would be too much. i still suggest no gt kit. its so much cleaner looking.

Reply to
oneadvent

You don't have to tell me. Check out my screen name. I special ordered a stripped 5-liter LX back in '87. I loved that car!

IMO, function must always come before style or looks. So in most

5-liter street applications 2 1/2" is plenty.

Patrick

Reply to
NoOption5L

MotorsForum website is not affiliated with any of the manufacturers or service providers discussed here. All logos and trade names are the property of their respective owners.