I would tend to agree. There's a lot of "happy" dynos on this forum along with over at toke er I mean tech We all can't drive down to texas speed to get those big numbers we want

 

If i were you, i would keep the headers the way they are or maybe get them coated inside and out.. Get a new Ypipe made that goes from 2.5 at the flange to 3.0... They Merge the 2 3.0 mid-pipes together with a 3.0->3.5 merge collector, then run 3.5 all the way out... Make sure to keep the pipes as straight as possible...

Do some research on merge collectors, you will find what I recommended is what all the racing teams use...The merging helps with scanvenging, the exhaust velocity speeds up when they merge, then the sudden expansion creates a suctioning effect which pulls the exhaust out...

My exhaust is built the same way, and at the track with the cutout open sounds freaking SWEET, ask anyone who has heard my little 4.8 go down the track...

 

if you had a auto/decent converter/slicks then yes 12's easy, but i dont know with the 5speed.

BTW i have AEM LT headers with 2.5" collectors going into 3" the rest of the way and i think they're fine..

Corey, who told you your exhaust sounds good?

 

i would say yes, but i dont know of many on here that has ran with a 5speed, do a search, there was a guy on here that was from alabama, he had a joe gibs rcsb 4.8 s/c and ran low 12's i believe, and i think he had the 5speed, maybe he knows more about the 5speeds.... i cant remeber his screen name though, but 01slowz71 is buddy's with him...

 

Good luck at achieving your goal!

 

I think you can do it. What are you gonna be running for tires? 30x10 slicks?

 

I dont think the 5 speed will allow fast enough shifting for 12's...Just my opinion.

Good luck.

Dustin

 

all he needs is a good 60 ft and quick 1-2 shift and it will get into 12's

 

1-2 can be done...its the 2-3 he has to worry about.

Dustin