Chancho Posted November 22, 2007 Report Share Posted November 22, 2007 Ok, ive been thinking and this is what ive come up with, is it possible to do0 a 3400 pelinum swap on a 3100, or do i have to go as low as the lim, i know about the EGR, any help would be appriciated, i used the search function, but everything told me to go to 60 degree, and there is nothing there about 3100 to 3400 anymore, its all 3500 and lets just say a 3500 in orlando is still few and far between Quote Link to comment Share on other sites More sharing options...
RangeStang Posted November 22, 2007 Report Share Posted November 22, 2007 Ok, ive been thinking and this is what ive come up with, is it possible to do0 a 3400 pelinum swap on a 3100, or do i have to go as low as the lim, i know about the EGR, any help would be appriciated, i used the search function, but everything told me to go to 60 degree, and there is nothing there about 3100 to 3400 anymore, its all 3500 and lets just say a 3500 in orlando is still few and far between You have to do the LIM also, it is the same egr I believe it is just mounted differently or some thing like that not sure. Someone else chime in because I don't remember. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted November 22, 2007 Report Share Posted November 22, 2007 you need to swap the upper and lower intakes. if you have a 99 as you state... the EGR is the same. use the donor large bore 3100/3400 throttle body along with the intake. stick with the existing injectors you have, they should be fine. and when you do this swap, get a FELPRO PERMAGASKET intake gasket... OR GTFO! Quote Link to comment Share on other sites More sharing options...
Chancho Posted November 22, 2007 Author Report Share Posted November 22, 2007 and when you do this swap, get a FELPRO PERMAGASKET intake gasket... OR GTFO! Ohh i know about these intake gaskets and all the problems ascoiated with them, its worth the money for the more expensive LIM gasket just to save all the headaches in the long run... so basicly i need off a doner car, a LIM, UIM, and throttle body and that would be it... anything else, i know you said the injectors would be fine off of my 99 but will the injectors off of the 3400 be larger? also are there any specific years of the 3400 that i need to get? Quote Link to comment Share on other sites More sharing options...
GP1138 Posted November 22, 2007 Report Share Posted November 22, 2007 and when you do this swap, get a FELPRO PERMAGASKET intake gasket... OR GTFO! Ohh i know about these intake gaskets and all the problems ascoiated with them, its worth the money for the more expensive LIM gasket just to ave all the headaches in the long run... so basicly i need off a doner car, a LIM, UIM, and throttle body and that would be it... anything else, i know you said the injectors would be fine off of my 99 but will the injectors off of the 3400 be larger? also are there any specific years of the 3400 that i need to get? The injectors off of the 3400 would probably not work with your 3100, at least when I did the swap I didn't use them. Also, swap the coolant fitting from your old LIM to your new LIM. Any year 3400 would work, but try to aim for 2000+. I got mine from a 2001 Olds Alero. As far as I know, the car is still going. Quote Link to comment Share on other sites More sharing options...
Crazy K Posted November 22, 2007 Report Share Posted November 22, 2007 oh yeah. some 3400 lower intakes are threaded on the heatercore feed port, some aren't. if you find one that is... you can use your stock line feed disconnect fitting (upgrade this if yours is made of pot metal) if the donor uses an O-ring fitted tube.... you could either: 1 use the donor cars tube and ghetto engineer a connection at the other end of the metal line (not hard, I added extra hose to do mine in the 95 cs) or 2 tap it to fit the disconnect fitting. p.s. this swap allows the engine to rev faster and higher, but my car had another issue... I had to add a tranny cooler because my transmission sometimes got too hot.... though it was probably doing this before the swap. basically... if you do this swap... a tranny cooler may be a wise investment. Quote Link to comment Share on other sites More sharing options...
Chancho Posted November 22, 2007 Author Report Share Posted November 22, 2007 ok, so add a tranny cooler to the list, so what kind of power am i looking to gain? Quote Link to comment Share on other sites More sharing options...
GP1138 Posted November 22, 2007 Report Share Posted November 22, 2007 ~15hp at the very most, IMO. It's got more grunt up top, most definitely, but you actually might find that you've lost some low end. Just don't expect much. It's really too much work for too little gain. I'd recommend simply swapping a 3400 in. Quote Link to comment Share on other sites More sharing options...
Chancho Posted November 22, 2007 Author Report Share Posted November 22, 2007 yea, thats what i was trying to get away from, at the time i really didnt know the terriable power difference between the 3100 and the 3800, i had the option to buy either, and thought the 3100 would be easier for performance mods... guess i was wrong Quote Link to comment Share on other sites More sharing options...
GP1138 Posted November 22, 2007 Report Share Posted November 22, 2007 yea, thats what i was trying to get away from, at the time i really didnt know the terriable power difference between the 3100 and the 3800, i had the option to buy either, and thought the 3100 would be easier for performance mods... guess i was wrong Wow, yeah, you kinda screwed yourself there a little. I'd venture to say that you would have been 110% better off with the 3800 for performance mods. It's got a bigger aftermarket and much more power to start with. Quote Link to comment Share on other sites More sharing options...
Chancho Posted November 22, 2007 Author Report Share Posted November 22, 2007 lol yep ohh whell, only problem with the 3800 was the fact that it was an old cop car, and i was tired of driving those around Quote Link to comment Share on other sites More sharing options...
GP1138 Posted November 22, 2007 Report Share Posted November 22, 2007 I also wish to input that I used GM OEM gaskets and had no problems. Quote Link to comment Share on other sites More sharing options...
Chancho Posted November 22, 2007 Author Report Share Posted November 22, 2007 yea i read somewhere that GM updated the gaskets and they are less prone to leaking if installed CORRECTLY Quote Link to comment Share on other sites More sharing options...
19Cutlass94 Posted November 23, 2007 Report Share Posted November 23, 2007 IMHO... Id rather do a complete engine swap than a top end swap. Especially since you can TUNE! However if you must, Go with a set of 3400 heads, 3400 LIM, and 3500 UIM. and all the parts you need to make it work. But for the price of those you can pratically buy a complete 3400/3500. You can even go crazy if you wanted to brining back the topic that you can tune. Maybe its just me, but I find it easier to pull the motor than strip it down and take the heads off. Quote Link to comment Share on other sites More sharing options...
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