New LS1 Owners - Newbie Tech - Im Going LT's/ORY... Just finished installing them!!! clip

Just like to share the news.

Thanks to a member of this site, I was able to finally afford my exhst set up.
I have shorty headers now, so i will be letN you guys know first hand what difference is between the two. Its obvious, but still.
Not sure how much i can get for my shorty headers but they are up for grabs.

If anyone knows of any stickies or threads on how to do the removal and install, let me know.
First time to attempt header/y pipe swap. building on a budget so i cant afford to pay for intall.

Thx...

I just installed my TSP 1 7/8" after replacing my pacesetters and made sure to measure how high I needed to inform others. I had my front frame rail (at the door hinge) off the ground 20". This height worked very well.

Disconnect battery so you do not arc the starter, replace plugs/wires while you are down there. Get longer 02's Bosch 13111 to reach the longtube. Passenger side looks tight but is usually the easiest side to get the header in. Use GM MLS header gaskets and stock bolts are fine.

Which headers are you installing?, This would help us in giving you direction.

Might consider replacing your motor mounts while you are in there, even the newest 4th gens are 10 years old.

There is going to be a big difference on your setup. I would say the motor mounts are a must. I am running poly mm's w/ no complaints.

Thx guys,

I actually replace the motor and trans mounts a good 8 months ago, along with the recommended Ac Delco platinum spark plugs. This whole car went under a pretty good save. (Rising from the ashes) thread for details.

The headers and Y pipe, that are going in are made by SLP... Seller is throwing in the 02 extensions, and 3 wide bands for the exhaust.
1 3/4 Primaries to 3''... Y is also 3''.

I have 1 cutout at the I pipe of stock Y. Should i leave it in the same spot? Dont want to ruin the y pipe.

LAST...

Did you upgraded to Poly Motor Mounts when you replaced them during the car's restoration?

If not, you may want to consider doing so. There is no better time than when the Manifolds/Headers are out of the car.

Good luck with your install, although you won't need it. You've had that car into a million pieces and got it back together. Installing LTs and a Y-pipe will be a piece of cake. :thumb:

LAST...

Did you upgraded to Poly Motor Mounts when you replaced them during the car's restoration?

If not, you may want to consider doing so. There is no better time than when the Manifolds/Headers are out of the car.

Good luck with your install, although you won't need it. You've had that car into a million pieces and got it back together. Installing LTs and a Y-pipe will be a piece of cake. :thumb:

Hi mumble...

Yeah man, the mounts are Poly, both trans and motor, so im good in that area. When the engine and trans were out, those mounts looked like straight up rags, I couldnt believe it, poor car, the previous owner did a poor job upkeeping it.

Im sure it wont be too much of a PITA to do the LT's, but any lil tip will help. I know from brand to brand some fit better than others, hope someone with an SLP set up shimes in.

Thx

Has anyone gone with SLP, or know of anyone who has?

All tips welcome,

I have the 20-22 lift is necessary, and appreciate it. Any knowledge/advice is welcome.

My BBK longtubes went in from the bottom and had no rubbing issues and have at least 3/4 of an inch clearance in every direction. it took about 5 hours to install most of which was spent trying to pull off the OEM stuff. I did the install in the street with a pair of jack stands and a cheapo craftsman jack.

Also AVOID SLP HEADERS. they are poorly designed and bulky.

If I were in the market for headers if go Tsp. I should add that I have Pacesetters and I love them. No problems at all.

My BBK longtubes went in from the bottom and had no rubbing issues and have at least 3/4 of an inch clearance in every direction. it took about 5 hours to install most of which was spent trying to pull off the OEM stuff. I did the install in the street with a pair of jack stands and a cheapo craftsman jack.

Also AVOID SLP HEADERS. they are poorly designed and bulky.



Really? I thought SLP makes quality stuff and If the only thing is a bit more difficulty at install, Im sure it'll be worth it. The Price was more than a bargain...

i remember my friend got some as part of a trade and he couldnt give them away. ended up selling the longtubes and y pipe for like 120 to someone locally. and with the primaries being soo long they are sorta restrictive. pacesetter and TSP are nice. i paid 350 for my BBK longtubes and y pipe and it went in sooo easy.

Not to steal OP's post but speaking of the motor mounts, is there any stickies on how to install motor mounts? I have heddmen lts and it seems like it rubs on the k member but I wanna make sure it isn't the mm@'s.

Not to steal OP's post but speaking of the motor mounts, is there any stickies on how to install motor mounts? I have heddmen lts and it seems like it rubs on the k member but I wanna make sure it isn't the mm@'s.

There are several how to's on here, just do a search.

Thanks. Will do

It is my understanding that the old style SLP headers hang too low (I know this for a fact), and I also heard that SLP updated them sometime for better clearance. I know the old style would drag on stock height cars.

Just like to share the news.

Thanks to a member of this site, I was able to finally afford my exhst set up.
I have shorty headers now, so i will be letN you guys know first hand what difference is between the two. Its obvious, but still.
Not sure how much i can get for my shorty headers but they are up for grabs.

If anyone knows of any stickies or threads on how to do the removal and install, let me know.
First time to attempt header/y pipe swap. building on a budget so i cant afford to pay for intall.

Thx...

Post up a video so we can see how it sounds. Reference point for me atlease.

Also here's a link for the motor/trans mounts installation...if it helps.
http://ls1tech.com/forums/generation-iii-external-engine/1285416-poly-motor-mounts-pacesetter-headers-tsp-y-install-dummies-lotsa-pics.html

It is my understanding that the old style SLP headers hang too low (I know this for a fact), and I also heard that SLP updated them sometime for better clearance. I know the old style would drag on stock height cars.

Yeah I believe it was the passenger side one that hung too low, if they redesigned that's good but are the ones that the OP have the redesigned ones? I've heard that Kooks headers were the best fit.

Yeah I believe it was the passenger side one that hung too low, if they redesigned that's good but are the ones that the OP have the redesigned ones? I've heard that Kooks headers were the best fit.

hmm strange.. from what ive heard the Kooks are actually a PITA to install.. i know i didnt even have to take out my starter or steering knuckle for my BBK's lol not the best header on the market but the ball flange seals better than any slip coupling does.

hmm strange.. from what ive heard the Kooks are actually a PITA to install.. i know i didnt even have to take out my starter or steering knuckle for my BBK's lol not the best header on the market but the ball flange seals better than any slip coupling does.

That's what I heard but I also heard that QTPs fit good too but not the ones that I got.

Post up a video so we can see how it sounds. Reference point for me atlease.

Also here's a link for the motor/trans mounts installation...if it helps.
http://ls1tech.com/forums/generation-iii-external-engine/1285416-poly-motor-mounts-pacesetter-headers-tsp-y-install-dummies-lotsa-pics.html



I sure will, I make transaction friday if i dont get discourage by reviews, I guess i should post some pics of them and then let you guys tell me what you think.

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I believe they are the new design. The Y pipe below, is also SLP. All has around 6k miles on them.

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Thoughts?...

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I believe they are the new design. The Y pipe below, is also SLP. All has around 6k miles on them.

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Thoughts?...

yea thats the new design for sure. the old design had about an extra 6" of tubing per primary and just caused clutter.. those arent as bad as the old ones... heres a picture of the headers on my car compared to MAC mid lengths. i got mine in chrome for around 350 shipped with a y pipe.

Not too bad after all right, some ppl are still stuck with the idea that slp's are no good, because of the previous design.

Went ahead and made the transaction... Should be getting shipping info pretty soon.

Thx guys,


I'll be back with results in a few days.

good luck. and save yourself some headaches and get exhaust sleeve band clamps. dont use the horse shoe clamps.. v-band clamps are even better if you can manage

good luck. and save yourself some headaches and get exhaust sleeve band clamps. dont use the horse shoe clamps.. v-band clamps are even better if you can manage

WIll do, the seller is including 3 wide clamps, not sure if its the same ones. But deff not welding anything together

Got them in the mail today!... The pics give them no justice. These things are in good shape, and happy with my Investment.

Found these on the Autozone site...



Mr Gasket/Exhaust Manifold Gasket - Perform
For your 2002 Pontiac Firebird 5.7L SFI 8cyl
Price:$28.99
Part Number: 5964


http://www.autozone.com/autozone/parts/Mr-Gasket-Exhaust-Manifold-Gasket-Perform/2002-Pontiac-Firebird/_/N-jhr1iZ9l3jr?itemIdentifier=193865_379004_0_

Thoughts?

Use factory MLS gaskets. You could probably reuse your originals if they are in good enough condition.

Use factory MLS gaskets. You could probably reuse your originals if they are in good enough condition.

I currently have some FELPRO gaskets, I put those on when i installed my shorty headers.

I've had no issues with felpro. Just want some reviews on Mr gasket, I can get them for free.

I would use factory MLS gaskets like was mentioned.

late reply but everyone is right... if you dont have any factory gaskets go get some... the others will eventually blow out and leak... the only gaskets on our cars that arent really reusable are the head gaskets... everything else OEM is far better

Thanks for the reply and yes I will be getting them tomorrow.


Off subject... Since im taking the ride to get retuned, Will it be ok it they do 1 locked converter pass, just to compare gains with the LT's and ORY?

Thanks in advance

would be nice to get numbers from tuning the same way that it was previously dyno'd so theres not any differences in the comparison.. but im not familiar with autos so im not sure...

Im completely exhausted from installing the LT's and ORY... Used jack and stands, Not FUN!!!

The sound is very aggresive and it feels like a totaly different ride from the shorty's and stock exh.

I love it!!!...

SLP stainless steel LT's and ORY
http://youtu.be/5a7zM3bKtkQ


Will post a better clip soon.

I tried taking a pic of my dyno sheets pre and post LT's and y pipe, but they just dont come out right, and its difficult to understand in pieces...

So i went ahead and just used the new and old HP numbers at different RPM's, to make the comparison between the two.

The one that says OLD hp Is with the shorty headers, and the New is with LT's and ORY, Both made by SLP.

I have a 3800 vigilante, so the numbers seem low... Unlocked converter!!!

ENJOY!
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sounds nice... dude i just noticed your third honk decal... DIDNT EVEN REALIZE WHO YOU ARE!. I just joined a few weeks ago i have the NBM T/A with the BBK's

Oh snap!!!... lol, yep that's me, Fenix. Trouble maker. What u go by on 3h?

NBM-t/a Tyler is my SN.

got some 5.3 heads about to get ported for mine along with a new cam =]

236/236.602/.602 on a 113 LSA should be around 430-450rwhp.. then ill need a clutch and a 9" :devil:

Op what Catback r u running with the LTs?

Getting there man... What are you looking to do next?

I knew you had a lot more left on the table from our original plans with the setup.

Awesome gains with the new exhaust.

NBM-t/a Tyler is my SN.

got some 5.3 heads about to get ported for mine along with a new cam =]

236/236.602/.602 on a 113 LSA should be around 430-450rwhp.. then ill need a clutch and a 9" :devil:


Nice man... Im about to throw some goodies here pretty soon to my T/A. Just might hold off for a bit on what it is. Got to beat a couple of guys in the area.

Op what Catback r u running with the LTs?

Its the stock piping with a shitty 80 series flowmaster... My first noob mistake.

Getting there man... What are you looking to do next?

I knew you had a lot more left on the table from our original plans with the setup.

Awesome gains with the new exhaust.

Hell yeah man!!! I will never forget the time you took to help me out. The ride has deff come a long way since, (rising from the ashes).

I have some more stuff coming in within the next 10/12 days. Lets just say i will temporarily be at around 420 to 440 rwhp:devil:

Im out to get my friends 04 cobra, lol

Hell yeah man!!! I will never forget the time you took to help me out. The ride has deff come a long way since, (rising from the ashes).

I have some more stuff coming in within the next 10/12 days. Lets just say i will temporarily be at around 420 to 440 rwhp:devil:

Im out to get my friends 04 cobra, lol

Not a problem, just glad you are still happy with everything you decided on. If people would listen to some of the long time members more often they would have spent money much smarter, guys like you that trust the older members are far and few.

You should be able to handle a little 04 Cobra! ;)

Diffently take a stock Snake with 440rwhp.... I've seen a TA keep up with my buddies C6 Z06...

Not a problem, just glad you are still happy with everything you decided on. If people would listen to some of the long time members more often they would have spent money much smarter, guys like you that trust the older members are far and few.

You should be able to handle a little 04 Cobra! ;)


Thanks, and yes I was about to make a huge mistake going on my own with mods. Almost got a summit cam at 202/218ish. Not knowing it was near stock, along with supporting items, until you came along with a couple others and set me straight. lol, I would of been pissed!!! :bang:

My buddys cobra is no joke, he puts down 450ish and dynoed 501rwhp 580tq on a 100 shot.
Im set off to beat him at the track/street Off bottle. I think with my hp now, i may be a lil closer to him from a dig.

The bastard got slicks... I got nittos 555r.

So we will see how it goes.

It takes roughly 50Rwhp less to match a Cobra in an fbody.. So if you make less than 50Rwhp less than him, you should pull him.

Diffently take a stock Snake with 440rwhp.... I've seen a TA keep up with my buddies C6 Z06...

I swear, that my car feels like a different ride after the lt's and ory, And feel very confident to be able to murder his Termi off bottle.

He is going to be pissed... And im just getting warmed up.

Advice for the Noobs... If you start Modding, you will never stop, its like getting pu$$y for the first time

Advice for the Noobs... If you start Modding, you will never stop, its like getting pu$$y for the first time

It is worse.. When shit goes south in a relationship, I spend stupid money on my car... LOL

Gets my mind off shit and makes me happy. HA

It takes roughly 50Rwhp less to match a Cobra in an fbody.. So if you make less than 50Rwhp less than him, you should pull him.

Im in that ball park, so i think i have a very good chance... Oh btw, The day of retune at dyno. The bay Temp was at 102 F. with a DA of almost 3800. When it reached this number, it had made like 5/7 passes on the dyno, and this time the converter was locked per my request. they where adjusting my shiftpoints to 6400 rpm.

390 isnt bad at all for an auto, but i know that i had to of lost a few RWhp due to temp and hot engine.

Im trying not to get to caught up in the numbers and more on the actual performance, so yeah.

It is worse.. When shit goes south in a relationship, I spend stupid money on my car... LOL

Gets my mind off shit and makes me happy. HA


LMAO, True story^^^...

That quote/advice is pretty cool now that i read it. Some one should use it as a signature. lol

My buddy has a C5Z and another one with a Z28...

The C5z is cam'd with nitrous after the divorce now and other buddy had a bad break up and now has a D1 @ 8#s. LOL

My buddy has a C5Z and another one with a Z28...

The C5z is cam'd with nitrous after the divorce now and other buddy had a bad break up and now has a D1 @ 8#s. LOL

Ugh relationships... They can be ugly.


Quick question, At my current hp and mods... Will it be possible to crack 11's?
Its hot as hell already, so not sure how much that will affect my ride at the 1/4

Ugh relationships... They can be ugly.


Quick question, At my current hp and mods... Will it be possible to crack 11's?
Its hot as hell already, so not sure how much that will affect my ride at the 1/4

I never ran the 1/4 but I have a pretty good idea of what I would have ran...

377Rwhp 3500# and 2200DA I would have ran around 11.4@119 or so... That was with the old intake setup/etc.

With your setup 11s should be an absolute, not a maybe.

Damn your car sounds sweet!!

Thanks man!!! Lts n ory do miracles... lol

yeah sounds good......Im gonna be doing the same thing in a couple weeks.

id ditch the flow...

yeah sounds good......Im gonna be doing the same thing in a couple weeks.

id ditch the flow...


Absolutely ditching the flowmasters, It was my first Nood mistake, and after that made no more thanks to the guys here on LS1tech.

I was just eager to make it sound good not knowing its the worst mufflers for our rides.

a 10 series isnt tooo bad... but sill better out there... i made the mistake of getting a spiral flow on mine and choking it... that will be coming off in favor of a sweet thunder or kooks bullet muffler in the near future... you should look into those. Both sound deep and nasty at WOT

a 10 series isnt tooo bad... but sill better out there... i made the mistake of getting a spiral flow on mine and choking it... that will be coming off in favor of a sweet thunder or kooks bullet muffler in the near future... you should look into those. Both sound deep and nasty at WOT

I think im staying away from flowmasters period. My buddy is a manager at a shop, and is going to build me a Corsa type exhaust with possibly a magnaflow muffler. One in, one out and the butterfly to open it 100% when desired.

But will see..

NOOOOO.. i despise magnaflow... they sound awefull on LSx and LTx cars. get a dynomax bullet or a sweet thunder bullet muffler....

There must be something wrong with your hearing.
a 10 series isnt tooo bad... but sill better out there... i made the mistake of getting a spiral flow on mine and choking it... that will be coming off in favor of a sweet thunder or kooks bullet muffler in the near future... you should look into those. Both sound deep and nasty at WOT
What are you saying sounds better than a 1 chamber FM? I hope its not some POS bullet. Bullets barely change the tone of the exhaust and the loudness stays similar, might drop 5 decibels, maybe.
NOOOOO.. i despise magnaflow... they sound awefull on LSx and LTx cars. get a dynomax bullet or a sweet thunder bullet muffler....
Magnaflow? Are you serious?


A 1 chamber is one of the best sounding mufflers.. It quietens it down a tad and gives it an amazing tone, not open header tone like most bullets. Not to mention it still flows awesome.

NOOOOO.. i despise magnaflow... they sound awefull on LSx and LTx cars. get a dynomax bullet or a sweet thunder bullet muffler....

That was just one of the options, i still havent done my full research on what is going to be. either way, it will be a good one.

Just got doing some street runs... Got a rb20 240zx with 22lbs of boost. Made 350/360whp and 380 lbs of tq. Also an older 5.0, 95 slighty modded formula, and for desert, a 18 lbs boosted civic that kept buggin for a run.

No doubt, these long tube headers are awesome, deff a good investment for awesome power.