few questions about UIM and LIM swap

[95cutlassproject]

hello i am new here, though i browse the forums a lot. As you can tell by my user name driving a 95 cutlass (supreme) and i just have a few question. I have the small port 3100 and i know doing the UIM and LIM can both net me some power gains (and doing things such as getting them UIM and LIM ported) but i heard some talk on a forum (cant remeber which one) that the 3100-3400 UIM was designed to enhance low end torque i want to know if this is true. Also i looking in to getting a fender intake for my car, but i don't know/ and scared to relocated the battery.
any help would be nice. Thank you in advance
forgot to mention, sort of new to the car/ engine work, i understand the concepts and the UIM swap is the 3100 large port(ported) vs a 3500(ported)

[Guest]

If I can fit a 3" intake around the battery in a Cavalier, without moving it from it's stock position, you should have no problem doing the same in a W-body.

[95cutlassproject]

i dunno if my car is just not right or something but my battery takes it up all the space there, i do have an air intake running beneath the car i just don't like having to take it off and changing every time it rains.
Edit: or maybe i don't know what i am doing, i just went out and checked and couldn't find a spot to stick the intake. Thank for the reply

[SappySE107]

The W body is nothing like a J body then because you have to move the battery to do anything useful for a cold air intake. The small port stuff doesn't improve low end compared to a large port, so there is no real reason to consider sticking with it.

[95cutlassproject]

thanks for the info, but i guess my English is bad as always i was asking if the large port helped with torque compared to the 3500 UIM

[SappySE107]

Not much if anything. The 3500 upper has a broader powerband. I hope to do a before and after dyno comparison this year to put numbers to this.

[95cutlassproject]

Thank you so very much, i was thinking of going to the route of the 3500 UIM, but after your advice (and i know enough to know that you are well respected and know what your talking abou) ill just grab the 3100 large port LIM and UIM, now i just got to get the brattey moved. Once again thank you so much

[SappySE107]

http://wot-tech.com/shop/articles/94-99-3100-large-port-swap/cat_73.html

http://wot-tech.com/shop/articles/choosing-3100/3400-manifolds/cat_64.html

Read both of those. You need to do something about the rocker arms if they aren't the roller type already.

[95cutlassproject]

i have read those many time over (good articles) and i don't know if i cant do anything about the rocker arms short of a head swap, something i have no experience doing, and frankly i'm scared to try

Edit: Found out the 95 l82 has notches for roller rockers, but i still don't have any idea to put them on

[Guest]

The W-body has loads more space around the battery and same area on the opposite side of the car (where the ECM is), than the J-body.

I had to cut a hole beside the battery tray, and would have to do the same in a W-body, but is defiantly do-able.

[SappySE107]

If you have the notches, then its as simple as pulling the stock rockers, guide plates, and studs and installing the roller rockers.

[geldartb]

Not much if anything. The 3500 upper has a broader powerband. I hope to do a before and after dyno comparison this year to put numbers to this.

it would be interesting to see real world number to back up the claims.

[95cutlassproject]

OK, thanks everyone so the roller rockers should be easy (i hope) and for the battery i should move it to the opposite side of the engine bay?

[SappySE107]

The battery has to go to the trunk to make things easier. That is how my 92 grand prix is. I have a 91 and 92 GP and a 94 and 95 cutlass and none of them have "plenty of room" anywhere near the battery for 3" tubing without putting the battery in the trunk.

[95cutlassproject]

Ok so the trunk. Do i just buy a battery relocation kit?, is there anyway i can keep the stock pieces that screw onto the battery and move it to the truck. (i have helped my brother with hooking up subs and amps and lights so i have some idea of how to move the battery)