02 Motor into a 99?????

[rap219]

So upon checking i've found that there is a difference in part numbers from my '99 3.4 to an '02 3.4. But i also seen that the blocks are same and so are heads, so my guess is its in the intake which would make sense due to early lim problems. but what i'm wondering is what i'll have to do in order to swap the new motor into my car. Possibly switch intakes and fuel rails???? Is it possible to just put the newer motor in as is and run it???? Hopefully, because i heard the newer motors are made better. just hopping someone in here has done this or is a mechanic and can help me. I'm kind of stuck at a stand still and no one around here can answer my question. Thanks

[Ridenour]

shouldn't need to switch anything. The LIM gasket part number changed, yes. But I don't think anything else did. If you're intake doesn't fit right or whatever just take it off and put on a CAI or WAI.

Everything should fit fine.

[AleroME]

EGR valve design change on the upper intake manifolds from the 99 and 00+up.

[rap219]

so then, i can basically put this motor in my car???? Egr won't effect my car???? i already have a CAI so that will work. Anything else i need to know or any things i need to do to make it work???? Otherwise, thanx for the help

[Blackrider]

I dont think there are any differences with the PCM regarding the EGR, But even if so just swap the 99UIM to the 2002 engine

[rap219]

should i replace the head gaskets or intake gaskets on it???? it only has 30k miles on it. The newer ones have a better gasket on them don't they??? thanx again for the help

[Blackrider]

Originally Posted by rap219

should i replace the head gaskets or intake gaskets on it???? it only has 30k miles on it. The newer ones have a better gasket on them don't they??? thanx again for the help

I might be mistaken But i dont think the 02's came with the revised LIM gasket. If not I would replace that, if the head gasket isnt blow dont bother.

[rap219]

cool cool, I really like this site. You get good answers quick. lastly what company makes a good lim gasket for this motor???? I want a good one so i don't have to deal with this again.

[rap219]

????

[AleroME]

only 1 company makes it and its felpro. they make it for GM and sell it through autozone, advance auto parts, o reliy's ..etc.

[rap219]

Thanx, sounds good, does anyone know for sure though if i can use the 02 intake and get away with it???

[rap219]

Is the intake gasket i need the one for the '02 or the one for the '99 if i put the '99 intake on the '02 motor????? or do they both have the same gasket??

[Blackrider]

Originally Posted by rap219

Is the intake gasket i need the one for the '02 or the one for the '99 if i put the '99 intake on the '02 motor????? or do they both have the same gasket??

Yes they both have the same defect. you dont need to change it out with a new one but your tempting fate.

for the LIM go to GM for it, they have an updated part number for it. thats the new gasket, it has a few improvments such as bolt hole renforcments and taps on the very edge of the gasket, and new torque specs.

[DarkKnight]

The felpro gasket is the original design. Only GM has the revised gasket right now. (besides why would fel-pro toss out all those bad gaskets when people will buy 2 or 3 and blame the motor? )The UIM part numbers are different becuase the stlyle of EGR valve changed, and since the EGR valve mounts to the UIM they needed a new part. You can simply use you old UIM for compatablility. IIRC the only real difference between the 96-99 and the 00+ egr is either top or side mount. They should be electronically compatible. Yes, you must keep egr both for emmissions and b/c the PCM will set a code for it. Also, *one* question mark is enough to let us know it's a question, ok?

[brsexton]

Originally Posted by Blackrider

I might be mistaken But i dont think the 02's came with the revised LIM gasket. If not I would replace that, if the head gasket isnt blow dont bother.

Nope, a guy on Aleromod has an 03 with the problem. It was sometime on the late 03's they change was made.

[rap219]

so i can use the 02 motor with its 02 intake in my 99? thats what it sounds like but i want to make sure one last time. Because that will save some time and i'd rather not pull the intake and stuff if i don't have to. thanx

[Blackrider]

Originally Posted by rap219

so i can use the 02 motor with its 02 intake in my 99? thats what it sounds like but i want to make sure one last time. Because that will save some time and i'd rather not pull the intake and stuff if i don't have to. thanx

You can always temped fate

[rap219]

WEll, i'm going to replace the LIM, but i don't want to pull the intake back off the '99 if i don't have too. I just wanted to know if anyone w/ a 99 had swaped a newer motor into theirs. and if the newer intake will work fine.

[DarkKnight]

Originally Posted by rap219

so i can use the 02 motor with its 02 intake in my 99? thats what it sounds like but i want to make sure one last time. Because that will save some time and i'd rather not pull the intake and stuff if i don't have to. thanx

Just check to make sure the electrical connector for the two EGRs is the same. Even if it's not, electrically the EGRs are the same, and you only need to solder in/re-pin a new connector for it. Otherwise, they are identical.

[rap219]

thanx to everyone for the help.