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Quick Q About Mods...

This is a discussion on Quick Q About Mods... within the Firebird / WS6 forums, part of the Vehicle Specific category; ...I'm new. I bought a Trans am from a guy with a bad rep, so I stripped it down and ...

  1. #1
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    Navy Blue
    1999 Trans Am

    Quick Q About Mods...

    ...I'm new. I bought a Trans am from a guy with a bad rep, so I stripped it down and out to clean it and before I put it back together I painted it. I love the car but looking to upgrade. I have a WS6 hood but not the cold air intake system. It also has a performance clutch and 3.41 gears. Off road y-pipe and flowmaster muffler.

    So here's my questions:
    1 - What's a good aftermarket cold air intake?
    2 - Does the replacement underdrive pulley make a difference in power?
    3 - What's a good mild cam size, and/or company to get?
    4 - Anything else I haven't tought of, feel free to add

    I'll post pics whenever I figure out how.

  2. #2
    Member Numba1TA's Avatar
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    Pewter
    1999 Trans Am WS6 A4

    I feel that the K&N FIPK is a good cold air intake. We have good sponsors here and you can find just about anything you need. I suggest getting some LT headers or some kind of performance cat-back and upgrade to 4.10 gears. should be a good starter,

    1999 A4 WS6 Pewter, Hooker Long Tube Headers ,GMMG Catback Exhaust, QTP Off-road catted y-pipe, K&N FIPK Intake, GM 3.73's, Spohn Torque Arm,BMR LCA's Dyno Tune by PBJ.

  3. #3
    Member joedude02's Avatar
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    Victory Red
    2002 T/A WS6 A4

    definitely get gears. i see that you're in the navy. the base hobby shop can get those installed for cheap. that and a good clutch, but be ready to upgrade the MC or mod it. use the sites search feature. tons of info on your exact question.


    hmmm.... after my second observation the 'navy' may just be the color of your car. my bad, so if you don't have that privilege to use military base hobby shop, beware of scam auto shops.

  4. #4
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    Navy Blue
    1999 Trans Am

    hahaha sorry to mislead anybody by the name. The color of the car is Navy. I do most of my mine own mechanics and body work because I know about the shady jobs shops will do. But I've heard 4.10s in these are too much for a somewhat daily driver/weekend toy...

    BTW, how do I load a picture?

  5. #5
    Member Pickle86's Avatar
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    Navy Blue Metallic
    2000 Trans am ws6

    http://imageshack.us/
    use this to post pics.

  6. #6
    Member joedude02's Avatar
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    Victory Red
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    Quote Originally Posted by navyLS1 View Post
    hahaha sorry to mislead anybody by the name. The color of the car is Navy. I do most of my mine own mechanics and body work because I know about the shady jobs shops will do. But I've heard 4.10s in these are too much for a somewhat daily driver/weekend toy...

    BTW, how do I load a picture?
    i read here that someone figured out that they only lost like 2 mpg with the 4.10's. definitely do the 4.10's since you got a M6. the best bang for your buck.

  7. #7
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    Black
    97 firebird WS6

    4:10s arent too much actually they are a lot of fun but be prepared to lose some top end speed. Go w/ LT, throttle body, intake, etc. Bolt ons are good but if you want serious power then you're gonna have to shell out some $ for NOS, or charger, or some engine work. At that point though $ flows b/c you're gonna neeed a rear. A dyno tune will bring out some hp too and make sure evrything is in check.

  8. #8
    🤔 11s. blackbirdbrain89's Avatar
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    4.11s are going to be weaker then 3.42, mild cam and bolt ons is more then what a 7.625 rear can hold up, people break the stock rears on stock power all the time by adding a cam with out an axle, u better have a 2nd car. ... u can add long tubes and intake and u wont be as likely to break any thing but the ls1s come alive with a simple cam swap, u better off beefing up ur drive train b4 u add heads or cams or no2, blower, trust me i broke my stock rear 5 times once at the track with 255 street tires the rears are junk invest ur money wisely

  9. #9
    Bone it like you own it FORD RECOVERY EXPERT's Avatar
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  10. #10
    autoconnectionllc.com 02transamce's Avatar
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    +1 on the exhaust,long tube headers,y-pipe,and a good performance catback really help a ls1 breathe.i know you said cold air intake,but a slp lid and k&n filter combo is widely used on some very fast f-bodies and is less expensive than a k&n cold air kit(fipk).

  11. #11
    cammed & slammed Kaotic_ws6's Avatar
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    Quote Originally Posted by 97ramair View Post
    4:10s arent too much actually they are a lot of fun but be prepared to lose some top end speed. Go w/ LT, throttle body, intake, etc. Bolt ons are good but if you want serious power then you're gonna have to shell out some $ for NOS, or charger, or some engine work. At that point though $ flows b/c you're gonna neeed a rear. A dyno tune will bring out some hp too and make sure evrything is in check.
    ive got 4.10s and there awesome. youve still got enough top speed to s**t your pants.

  12. #12
    cammed & slammed Kaotic_ws6's Avatar
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    Quote Originally Posted by blackbirdbrain89 View Post
    4.11s are going to be weaker then 3.42, mild cam and bolt ons is more then what a 7.625 rear can hold up, people break the stock rears on stock power all the time by adding a cam with out an axle, u better have a 2nd car. ... u can add long tubes and intake and u wont be as likely to break any thing but the ls1s come alive with a simple cam swap, u better off beefing up ur drive train b4 u add heads or cams or no2, blower, trust me i broke my stock rear 5 times once at the track with 255 street tires the rears are junk invest ur money wisely
    ive still got my stock rear and i put the pounding to it!
    1999 mbm Z m6/ forged 346, lt's, wires, ls6 intake, sts rear turbo.

    *SOLD*2002 black ws6- <Bolt ons, ls6 heads, mild cam, dyno tune, full susp. and 4.10s> --440rwhp/395rwtq

  13. #13
    Yeah baby! Yeah! silverWS6's Avatar
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    Quote Originally Posted by Kaotic_ws6 View Post
    ive still got my stock rear and i put the pounding to it!
    Me too! starting to hear a litle whinning though

  14. #14
    cammed & slammed Kaotic_ws6's Avatar
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    Quote Originally Posted by silverWS.6 View Post
    Me too! starting to hear a litle whinning though
    yea but i figured mine wouldnt last at all! with 420 rwhp, but its holdin up like a champ. what mods you got?

  15. #15
    Moderator 35th-ANV-SS's Avatar
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    Quote Originally Posted by Kaotic_ws6 View Post
    yea but i figured mine wouldnt last at all! with 420 rwhp, but its holdin up like a champ. what mods you got?
    What tires do you have? The answer to this question will be the reason why is my guess.

  16. #16
    cammed & slammed Kaotic_ws6's Avatar
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    Quote Originally Posted by 35th-ANV-SS View Post
    What tires do you have? The answer to this question will be the reason why is my guess.
    ive got bridgestone potenzas, 305/30zr/19s out back. suprisingly they dead hook from a 20 and 30 roll. but the cost 409 a tire

  17. #17
    MANWHORE TEAM suede's Avatar
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    2000 Trans Am WS.6

    1. Volant...
    2. Power somewhat yes, but you'll notice it rev up faster more than anything
    3. Custom grind.... not hardly any more than a stock grind and will be way better than any shelf brand

    as far as gears go, beware that its going to put more stress on your axles and they may snap, so you may want to wait till you upgrade your rear before gears, but it all depends on your plans

    your setup would benefit pretty well with some long tube headers too...

  18. #18
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    Navy Blue
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    Thanks for advice. This leads me to another question, long tube headers...I've always been told they're pointless unless your pushing 500HP/Torque. So is it the sound that everyone enjoys or does GM 350s react totally different to headers than Ford's 302/351?

    What about shorties? Anybody running them?

  19. #19
    Moderator 35th-ANV-SS's Avatar
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    Quote Originally Posted by navyLS1 View Post
    Thanks for advice. This leads me to another question, long tube headers...I've always been told they're pointless unless your pushing 500HP/Torque. So is it the sound that everyone enjoys or does GM 350s react totally different to headers than Ford's 302/351?

    What about shorties? Anybody running them?
    The stock intake on our cars, along with the exhaust, is VERY restrictive. You will see some nice HP gains from LTs. All I have done to mine (engine/HP wise) is LTs, ORY, Lid, and exhaust and I DYNO'd 330whp and 342wtq on a Mustang DYNO. Typically LS1's DYNO around 280-290 on a Mustang DYNO (308-319 on a DYNO Jet). That is going through a Moser 9" rear end, which is the least efficient of the bunch as far as drive train loss goes.

    So as you can see, I picked up quite a bit just from basically letting it breathe. Oh, and the sound of headers with exhaust is

  20. #20
    Moderator 35th-ANV-SS's Avatar
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    Don't waste money on shorty headers.

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