Officially Swapping in a LS & 4l80e in my 99 GMT 400 4x4 Tah

Performance modifications, tips & tricks

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CrazyHoe
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Joined: Tue Feb 19, 2008 8:30 am
Location: Mtl; '98 2dr4x4 Tahoe, L31,Hookers Long T, 0411,EFIlive, 4L80-E,dual 3",marine int+inj

Post by CrazyHoe »

The fact that it's a "2000", isn't that a problem?

Speeder
Posts: 10772
Joined: Fri Apr 30, 1999 9:12 pm
Location: 2015 Tahoe 2WD 5.3L 6L80E, 2008 Colorado work beater, 2003 Dodge Dakota pro-touring project

Post by Speeder »

Nah, we covered that. :lol:

foreverfalcon40
Posts: 469
Joined: Wed May 06, 2009 10:35 am
Location: NY

Post by foreverfalcon40 »

I am calling him tomorrow!

link to ad...kill you if you steal it from me!

http://longisland.craigslist.org/pts/2806910799.html

Hog
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Joined: Tue Dec 11, 2001 4:00 pm
Location: 1997 Chev ECSB L31 350 1997 GMC Sierra SLE RCSB, Ontario

Post by Hog »

I wouldnt want the 2000 engine, iron heads and inappropriate crank making it useful for 80e trans use only.

Resale of the iron heads is nil. Of course it can be made to work.

peace
Hog

foreverfalcon40
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Location: NY

Post by foreverfalcon40 »

Heads don't matter bc I am swapping in AFR heads and cam. Saying the crank is garbage?

bai78
Posts: 187
Joined: Mon Jun 22, 2009 7:56 pm
Location: Dallas, TX: '99 ProCharged Tahoe, '02 Denali XL LQ4, AWD, mp112

Post by bai78 »

Are you gonna swap the whole unit to include the 80e?

I think Hog is saying it will be a challenge to mate a 60e to that particular 6.0 if that's what you had in mind.

Who knows, I maybe reading this all wrong.

foreverfalcon40
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Location: NY

Post by foreverfalcon40 »

80e is going in

Speeder
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Joined: Fri Apr 30, 1999 9:12 pm
Location: 2015 Tahoe 2WD 5.3L 6L80E, 2008 Colorado work beater, 2003 Dodge Dakota pro-touring project

Post by Speeder »

No worries then.

bai78
Posts: 187
Joined: Mon Jun 22, 2009 7:56 pm
Location: Dallas, TX: '99 ProCharged Tahoe, '02 Denali XL LQ4, AWD, mp112

Post by bai78 »

foreverfalcon40 wrote:80e is going in
Speeder wrote:No worries then.
Sounds like a winning project to me!

FF40: check your f/s thread on TYF & let me know...

foreverfalcon40
Posts: 469
Joined: Wed May 06, 2009 10:35 am
Location: NY

Post by foreverfalcon40 »

Ok...called the guy. truck is missing bed and tailgate and side mirrors...less parts equals less money.

Says truck is driveable but cnt be turned b/c of accident.
I have been pricing out things...guess I won't be slapping on a S/C until my current one is sold. The Ms. also gave me an ultimatum. Her or the Blower...going to go with the blower just not now. I had have close to nill in my savings. Once I sell the my old motor, trans, s/c and hopefully get the install jobs from the buyer a blower will in grasp and some.

So I have been searching around...

I can't find the exact headers I need...I know Schenfeld makes them, which one's. I checked out summit thier prices are EXTREMELY reasonble compared to headmen! Should I just throw another weld on top of theirs? Reason why so cheap?

Also with me adding a boost later on....will running AFR heads and a z06 cam eff it up? Any other cams boost friendly that can help me achieve 500-600?

Also what Shift Kit and stalll should I go with? Any other mods you guys think I am missing?

I came across this right-up...seems helpful but kinda sucky bc it all reverts to buying parts from s&p

http://www.hotrodlane.cc/PDFFILES/Lisa%20Tahoe.pdf

they swapped in a TBIâ„¢...how much does this apply to me?

CrazyHoe
Posts: 6228
Joined: Tue Feb 19, 2008 8:30 am
Location: Mtl; '98 2dr4x4 Tahoe, L31,Hookers Long T, 0411,EFIlive, 4L80-E,dual 3",marine int+inj

Post by CrazyHoe »

CrazyHoe wrote:The fact that it's a "2000", isn't that a problem?
Piston slap! That's the problem! Was fixed in later years, but when??

bai78
Posts: 187
Joined: Mon Jun 22, 2009 7:56 pm
Location: Dallas, TX: '99 ProCharged Tahoe, '02 Denali XL LQ4, AWD, mp112

Headers...

Post by bai78 »

http://www.ebay.com/itm/ws/eBayISAPI.dl ... OU:US:1123

These are the ones I'm putting on my 6.0. I can't say how the fitament or clearance would be in a GMT400 body/frame though.

foreverfalcon40
Posts: 469
Joined: Wed May 06, 2009 10:35 am
Location: NY

Post by foreverfalcon40 »

CrazyHoe wrote:
CrazyHoe wrote:The fact that it's a "2000", isn't that a problem?
Piston slap! That's the problem! Was fixed in later years, but when??
Not good....

foreverfalcon40
Posts: 469
Joined: Wed May 06, 2009 10:35 am
Location: NY

Re: Headers...

Post by foreverfalcon40 »

bai78 wrote:http://www.ebay.com/itm/ws/eBayISAPI.dl ... OU:US:1123

These are the ones I'm putting on my 6.0. I can't say how the fitament or clearance would be in a GMT400 body/frame though.
Any GMT 800 style headers will fit, no special swap headers?

CrazyHoe
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Joined: Tue Feb 19, 2008 8:30 am
Location: Mtl; '98 2dr4x4 Tahoe, L31,Hookers Long T, 0411,EFIlive, 4L80-E,dual 3",marine int+inj

Post by CrazyHoe »

Not all had it but it's a possibility.

http://www.pistonslap.com/tsb/010601028.pdf

foreverfalcon40
Posts: 469
Joined: Wed May 06, 2009 10:35 am
Location: NY

Post by foreverfalcon40 »

CrazyHoe wrote:Not all had it but it's a possibility.

http://www.pistonslap.com/tsb/010601028.pdf
But they said it is not a problem, will regular sea foam treatments keep the carbon from building up?

CrazyHoe
Posts: 6228
Joined: Tue Feb 19, 2008 8:30 am
Location: Mtl; '98 2dr4x4 Tahoe, L31,Hookers Long T, 0411,EFIlive, 4L80-E,dual 3",marine int+inj

Post by CrazyHoe »

foreverfalcon40 wrote:
CrazyHoe wrote:Not all had it but it's a possibility.

http://www.pistonslap.com/tsb/010601028.pdf
But they said it is not a problem, will regular sea foam treatments keep the carbon from building up?
Will washing you feet regularly help you keep your 2 sizes too big shoes on??

Hog
Posts: 5036
Joined: Tue Dec 11, 2001 4:00 pm
Location: 1997 Chev ECSB L31 350 1997 GMC Sierra SLE RCSB, Ontario

Post by Hog »

foreverfalcon40 wrote:Heads don't matter bc I am swapping in AFR heads and cam. Saying the crank is garbage?
I realize you are using aftermarket heads, my point was that the iron 6.0 heads have zero value compared to a set of aluminum stock aluminum heads. I'm speaking of recouping costs.

The crank is fine in running a 4l80e.

A set of ported stock casting would bring you the numbers you desire.

A set of bone stock L92's would bring you the numbers N/A for $800 for a set of heads, no blower needed.

IIRC GM started using the newer pistons with the coated skits in 2003. There were small improvements in the GEN 3 engines for almost every MY they were built.

EDIT I just checked, it was indeed MY 2003 when GM used the newer polymer coated pistons to try and combat piston slap.

Application of floating-pin pistons in the Vortec 6000 is accompanied by a changeover, begun in model year 2003, to re-profiled polymer-coated pistons. The polymer material allows tighter piston to cylinder-bore clearances without bore scuffing, extending the benefits of the floating-pin piston and rod assembly and reducing noise generated by the piston’s movement within the cylinder. The net result is a quieter engine.
peace
Hog

99bluetahoe
Posts: 634
Joined: Thu Apr 07, 2005 11:19 pm
Location: Fremont, CA 1999 2dr Tahoe 4wd, stock, awaiting engine transplant

Re: Headers...

Post by 99bluetahoe »

foreverfalcon40 wrote:
bai78 wrote:http://www.ebay.com/itm/ws/eBayISAPI.dl ... OU:US:1123

These are the ones I'm putting on my 6.0. I can't say how the fitament or clearance would be in a GMT400 body/frame though.
Any GMT800 style headers will fit, no special swap headers?
They will bolt up to the ls engine but will probably require modifications to fit. Seems like he will try them out and see what happens.

Bai78, let us know how they fit. For the price they are worth a shot. I believe calspeed on ls1tech has a set of inexpensive stainless long tubes for the 99-06 trucks too. They also just came out with a 1-7/8" primary set.
http://www.calspeedperformance.com/prod ... eaders.htm
http://www.calspeedperformance.com/CalS ... sypipe.htm

CrazyHoe
Posts: 6228
Joined: Tue Feb 19, 2008 8:30 am
Location: Mtl; '98 2dr4x4 Tahoe, L31,Hookers Long T, 0411,EFIlive, 4L80-E,dual 3",marine int+inj

Post by CrazyHoe »

foreverfalcon40 wrote:
CrazyHoe wrote:Not all had it but it's a possibility.

http://www.pistonslap.com/tsb/010601028.pdf
But they said it is not a problem, will regular sea foam treatments keep the carbon from building up?
Will washing you feet regularly prevent you from loosing your shoes that are 2 sizes too big ??
Last edited by CrazyHoe on Wed Feb 15, 2012 10:44 am, edited 1 time in total.

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