Want to try to keep it street legal, so would like to keep emissions passable. I have the SLP loudmouth catback exhaust.
What are the best headers for me, and what would I have to get/do to install them. Would like to get headers with a y pipe with cats that I can mount right to my exhaust with out any problems. Any suggestions?

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2000 Black Trans Am, M6, SLP loudmouth exhaust, short shifter, HPP3 programming, suncoast Ram Air hood and kit, EGR mod, MAF ends. Getting SLP level 1 suspension, SBC, and AR XR Lemans RIMS, 17x11's rear 17X9" fronts!
So far only 1/4 mile time is 13.5 at a 106mph...terrible 60' times, need to improve.

 

whos done the SLP long tube, and hve u used their cats and y pipe? sounds like that would be best for my car and connect that to my loudmouth exhaust

 

If you want to stay street legal long tube headers out are, only shorties are 50 state legal. If you plan to lower your car I'd recommend FLP LT's if you go that route, SLP's will hang down too low & you'll scrape. JBA makes solid shorty headers but you wouldn't see much if any gain on your 2000 LS1.

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2002 SOM WS6 Trans Am
Former 2001 Camaro SS
Former 2000 WS6 Trans Am
Former 1998 Firebird-no pics

 

I have always wanted to know this, but what would the gains be with shorties with say a cam and so on. I have always heard that you get better low end torque out of shorties.

 

Go with the FLP longtubes, you won't regret it. They work great!

 

I know it seems like you would pick up more torque with shorties, but long tubes actually produce a lot more low end torque. Shorties make their power in the upper rpm's, while long tubes are all across the power band.

I've heard that shorties aren't worth the gain on an LS1, somewhere just under 10 rwhp.



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1997 Bright Red Z28
A4, 3.23's, K&N FIPK, FLP Headers, Flowmaster, Cutout
My Z28

 

Well that settles it, shorties are out, By the way hows college station, I went to A&M for a year and a half and then transfered back home to A&M Corpus Christi when the bonfire fell.

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'02 Red Z28, ebony leather, M6, T-tops, Trac. cont., hurst shifter
-Borla (the expensive cut-out)
-Wisperlid W/K&N
-FRA
-Cags eliminator
-Strange 4.10's
-G2 Rear Girdle
-Valv. Synthetic 10W-30
-Redline gear oil
-Fat hurst shift ****
-Lead foot
Soon to be:
Alpine Screen, Orion xtr 800.4, xtr 900.2, Kicker 12L7 in a milhouse, Focal polykev K2's.