I have dual exhaust with an ok growl, should i change the catalytic converter to make it faster/louder?
Or just the tips?

 

Changing from one cat to another doesn't have a whole lot of effect on sound. Deleting the cat tends to make it more raspy, at least on the 3800s.

Changing the tips by themselves also has little effect on the sound.

 

Hey bumpin, thanks for the help. I just love my monte and rather get rid of her when the engine goes I want to keep her and give her a new heart, its just picking the right one. If i am going to replace anyway I would love more power. I think moving up to a 3.8 s/c from a 3.4 will be a big difference. By the way, how comparable is your guide to doing this on an 02?

 

 

can you sc a non sc 3800? i found a non sc for pretty cheap.

 

It definitely would be. Your 3400 is like 180 bhp, a 3800 s/c is 240 bhp- so that alone is a 60 hp difference. Not to mention, you drop another $1k in basic bolt ons, and you can get up to 280-300 bhp- making the overall setup almost 100 hp gain over your current setup for under $3k with stock reliability. Thats tough to beat.

The only real differences I see are in the axles, and the wiring harness. You could use a 3800 engine harness from your same year car (us 5th gen guys can't because the 3800s only came in 2 years of our car). Plus, you should be able to buy stock axles for a 3800 s/c / 4t65hd and have them drop right in.

Also, ignore the header/firewall modification stuff- you won't have to deal with that.

Other than that, all the rest of the stuff is pretty much the same- it will still physically bolt in, and plug in- its as easy of a swap as you're gonna get.

Quote:

Thanks Bumpin96monte for sharing/posting/helping members.

Thanks for the compliment- I really appreciate it!

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can you sc a non sc 3800? i found a non sc for pretty cheap.

Yes, search through recent posts on here for "3800 top swap". I covered it pretty well in my post here:

https://montecarloforum.com/m_106140.../tm.htm#106140

Basically, its not as easy as just sticking the supercharger on. You have to replace everything from the heads on up. Thats not necessarily a bad thing- if the L36 you found is cheap enough, it may be worth it- but its really your call.

 

what tranny would my car have right now? will i need to find an hd?

 

I'm pretty sure you have a 4t65e. You wouldn't necessarily need a 4t65hd, a lot of 3800 NA guys do the swap and keep thier 4t65e- but a lot of people do put the new trans in, usually because they find a fairly low mileage engine + trans, and it seems about half the people are looking to swap because their current powertrain has been abused and is just plain wore out.

Its up to you though...

 

so if i was looking to do a little bit at a time i could do the trans later? and about your really awesome NA/SC/turbo post. I would be better off with a turbo?

and hey, what is a csc?

 

CSC = centrifugal supercharger. It's basically the intake side of a turbo, but uses the engine power to spin the intake compressor instead of the exhaust pressure. A csc is much more efficient than a roots-type supercharger (like the Eaton M90's that come on the L67), but not as efficient as a turbo.
Here's a csc on a monte: http://www.cardomain.com/ride/292954/4

The 6th gen (2000-2005) LS cars with the 3.4L engine have the 4T60E transmission.

I have no idea if the L36 or L67 engines will bolt up to that trans (bumpin, I'm guessing you can fill us in on that info), but even if the L67 did bolt up, I think that the biggest engine used for the 4T60E is the 3.4L. It's not really designed for 240+ hp.

If you'd need someone to do the swap for you, check this site. http://www.milzymotorsports.com/
It'll at least give you an idea of what it would cost to have someone experienced do the swap with a rebuilt engine and transmission. There is a section for engine swaps, giving you the price of what it'd cost, and what engines you have available that would bolt into your car.

Honestly though dude, unless you have invested thousands of dollars and tons of custom work already into your 2002 LS, then it's probably going to be a lot easier and a lot cheaper to find yourself a new SS with the supercharged engine, if that's what you want. Especially if you're not that experienced as a mechanic. Consider that if you can't do the swap yourself, how much you'd actually be spending altogether, not only on parts, but on all of the labor getting someone to wire the engine and trans up for you.

I understand that you love the one you have now, but I had considered doing the same thing with my 2001 LS.

If I had, I'd still have a 2001 LS with over 120k miles, but with a bigger engine.
Instead, for about the same as the swap would have cost me I got a 2004 supercharged SS.
Now, I got a shiny new monte with a supercharged engine, loaded with options.

-Riggs.