Here is my dilema...

aite...so I have a 2003 4.3 L v6 chevy...I was putting a 6.0 in it..My dad said he didnt want me to change up the motor..So Im going to have to wait about a year or so before I do that...anyway...I was going to add some modifications that will transfer over when I get the V8...plus let me have some fast fun while still owning the v6...tell me what u think of my list so far..

- Zippy Performance shift kit w/ corvette servo
- Rear end change from 323 to 373
- Electric fans
- Nelson Tune
- Torque Converter
- Add a custom fiberglass box/ containing my subs with a built in center console w/ a monitor slot, painted the color of my truck


What else guys? :jump:

sounds good for a start... good luck.. make sure when you change to 373 that you install a LSD as well... if yours is open that is.

sorry to ask..Im still a noob..but whats an LSD?

limited slip diff

Oh ok (duh) :laugh: makes perfect sense now...Thanks :wave:

no prob :hshake: glad to help

My friend said throttle body modifications will help too...What does that mean?

the tb coolaint by pass?

possibly so..What all does that do?

looks like your on the right track but...
a big no no on the shift kit, servo, and torque converter since the lsx based engines do not use the same transmission that's behind the 4.3's.

its the 4l60 though? and the 6.0 will bolt on right to it?

<div class='quotetop'>QUOTE(Aggie &#064; Feb 26 2007, 09&#58;07 PM) [snapback]84628[/snapback]</div>

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its the 4l60 though?
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Yeah we have the 4l60e. the 4.8, and 5.3 do as well. Bluecajun is right about the tranny stuff. But me and jethro did the vette servo and that is an inexpensive/easy mod for the tranny. You probably wont need a shift kit because once you get the tune, and IF you get the servo, it&#39;ll shift pretty good.

The throttle body mod that your buddy is talking about is porting the throttle body. I think :duh: I never really did anything with the throttle body except clean the crap off when I put the &#036;100 whistler on there.

if you got to 6.0l in almost a year bro do this dont be in a hurry and spend dollars save it then spend on the bigger sized engine 6.0l just my 2 cents friend i mean if i was going to swap to 6.0l in less than a year i would be patient ande save the dollars &#33;&#33;&#33;&#33;

<div class='quotetop'>QUOTE(duckysbht &#064; Feb 26 2007, 09&#58;10 PM) [snapback]84629[/snapback]</div>

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Yeah we have the 4l60e. the 4.8, and 5.3 do as well. Bluecajun is right about the tranny stuff. But me and jethro did the vette servo and that is an inexpensive/easy mod for the tranny. You probably wont need a shift kit because once you get the tune, and IF you get the servo, it&#39;ll shift pretty good.

The throttle body mod that your buddy is talking about is porting the throttle body. I think :duh: I never really did anything with the body except clean the crap off when I put the &#036;100 whistler on there.
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oh ok...makes better sense...but I was thinking about doing all the tranny stuff now before I get the swap...Will it matter or make a difference..or better to just wait?

Oh dude I already put the money away for the engine and the swap haha..its locked up..Im just going to use the money I saved up this semester and what I get for my 4 wheeler Im sellin..and get my custom box I wanted and fix the dent a prick put in my truck :p..also the tranny work, etc.

<div class='quotetop'>QUOTE(Aggie &#064; Feb 26 2007, 09&#58;14 PM) [snapback]84631[/snapback]</div>

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oh ok...makes better sense...but I was thinking about doing all the tranny stuff now before I get the swap...Will it matter or make a difference..or better to just wait?

Oh dude I already put the money away for the engine and the swap haha..its locked up..Im just going to use the money I saved up this semester and what I get for my 4 wheeler Im sellin..and get my custom box I wanted and fix the dent a prick put in my truck :p..also the tranny work, etc.
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Well if you get a 5.3 the tranny will mount up, and should be reliable for a while unless you are planning on some hardcore mods. The 6.0 is a different story. I have heard the 4l60 mounts up to the back of the 6.0, and I have heard it doesnt, you just gotta do some research on that. The 4l80e does mount up for sure to the 6.0, but that requires purchasing a kit to do a swap since your truck didnt originally come with the 80e. I dunno, just do browse around on here and performancetrucks.net and Im sure you can find alot of answers to questions you might have.

You wanna buy my box from my truck? It fit two 12 inch kicker comp subs.. :rock:

actually man im going to be getting rid of my ported box for 10s here in a bit cause im going with a custom fiberglass box for my console...w/ monitor, mabye ps2, 2 JL 10s, cup holders and compartment, painted the color of my truck haha...

You know I would but yea...

Yea the Lq4 from what I heard bolts to the 4l60 for sure.....but a kit will be required im sure..

<div class='quotetop'>QUOTE(Aggie &#064; Feb 26 2007, 10&#58;07 PM) [snapback]84645[/snapback]</div>

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actually man im going to be getting rid of my ported box for 10s here in a bit cause im going with a custom fiberglass box for my console...w/ monitor, mabye ps2, 2 JL 10s, cup holders and compartment, painted the color of my truck haha...

You know I would but yea...

Yea the Lq4 from what I heard bolts to the 4l60 for sure.....but a kit will be required im sure..
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Well no theres no kit to bolt the 60e to the 6.0, but if you were to get the 80e bolted up to the 6.0, then you HAVE to get a kit to make it fit in your truck. (The 80e I mean) The 80e is a bit bigger than the 60e.

oh ok..yea i knew they were bigger...its just a tongue twister almost when dealing with the 6 Liter...

Anyway...Once I get rid of the 4 wheeler I will be getting a tune...we should meet up at the track with nick or some other people and race&#33;

By the way "50&#036; free" to whoever helps me find someone who wants it and who buys it.

we should that&#39;d be cool. BTW every truck is different, but if you dont notice anything right away after the tune, just give it a week or so or 2-300 miles, or however long it takes your truck to relearn the new tune. Mine took a couple of weeks until it reached its full potential and then some.

Sorry i have not been on for awhile and i did not catch this post. I recommended the shift kit to him so that he is able to shift alot better. I know he will probably not fully utilize the shift kit but since we are already going to be in the trani when he does the server it is just as good to do the shift kit while we are at it.

I have recommended to him to go with an EATON posi when we do the gear change in the rear.

The modification i was talking about on the throttle body was to "Remove the cup off the bottom of the throttle blade". I did this when i had my 4.3 and it made a huge difference in throttle response. You just have to be really care when you do this mod to not cut in edge of the throttle blade. Ducky look on your throttle body and you should see what i am talking about on your blade.

<div class='quotetop'>QUOTE(shwarmy &#064; Feb 28 2007, 03&#58;22 PM) [snapback]84776[/snapback]</div>

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The modification i was talking about on the throttle body was to run the cup of the bottom blade of the butterfly. I did this when i had my 4.3 and it made a huge difference in throttle response. You just have to be really care when you do this mod to not cut in edge of the throttle blade. Ducky look on your throttle body and you should see what i am talking about on your blade.
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What do you mean by run the cup?

Sorry. Correction is "Remove the cup off the bottom of the throttle blade"

I thought about doing that a while back. Just never got around to it. If it takes less than 30 minutes ill do it...

All i recommend doing is taking the throttle body apart when you do it. Trust me this is the best way to do it.