lt1 or ls1 engine

**Mike Mlodecki** · 09-14-2007, 06:53 PM

i am about to drop a lt1 or ls1 in my car right now, still kinda deciding on which one to get, but i have a 99 firebird 3.8L would there be anything i would need to change in the car to make it compatable with the new engine?

**ATCharming** · 09-14-2007, 06:56 PM

id assume ls1 would be easier since ur car was made for ls1's not lt1's...

what tranny do u have?

**Mike Mlodecki** · 09-14-2007, 06:59 PM

4 speed auto, stock trans

**ATCharming** · 09-14-2007, 07:01 PM

hmmmm... u may be able to do lt1. im not exactly sure.

what r ur plans for the car? daily driver with just some extra balls? street racer? drag racer?

**Mike Mlodecki** · 09-14-2007, 07:03 PM

well planning on putting some open headers on it, exhaust, gears, new heads. gotta keep it in my budget for now.

**ATCharming** · 09-14-2007, 07:07 PM

daily driver then? or racer?
drag or street racing?

**Mike Mlodecki** · 09-14-2007, 07:09 PM

daily driver, and street racing

**Mike Mlodecki** · 09-14-2007, 07:15 PM

but i was also thinking would there b anything else to change like water/fuel pump? would this stock trans from a v6 be able to handle a lt1 or ls1?

**ATCharming** · 09-14-2007, 07:15 PM

id go with ls1 then.
lt1 has less power starting off, but its an iron block and can handle more power. ls blocks can handle plenty tho

ls1 will have 320ish-hp right off the bat. should be a large improvement from the v6.
being auto, get a stall as one of ur first mods. they can take up to a half a second off of your 1/4 time.

**ATCharming** · 09-14-2007, 07:15 PM

Originally Posted by Mike Mlodecki

but i was also thinking would there b anything else to change like water/fuel pump? would this stock trans from a v6 be able to handle a lt1 or ls1?

im not a pro with stuff liek this so ill let someone else answer, cuz i dont wanna give u false info

**Mike Mlodecki** · 09-14-2007, 07:17 PM

ok thanks

**JwMonE99** · 09-14-2007, 07:38 PM

look up an LE1 kit for the LT1, I think you would be impressed

**Mike Mlodecki** · 09-14-2007, 07:41 PM

is that package 2,050 total? or seperate

**JwMonE99** · 09-15-2007, 06:45 AM

Well the ones for LT1 are cheaper and your getting a lot of power, personally I would go for the LE1 its only $1,200 and gets you at 360-390 to the wheels.

**35thAnniZ28** · 09-17-2007, 11:07 AM

Le1!?!?!? If You Mean Lt1..its Not Putting Down Close To 360-390 To The Wheels...if Le1 Is Somekind Of Alien Engine That Creates Gobs Of Power..clue Me In..

**Mike Mlodecki** · 09-17-2007, 12:05 PM

google le1 kits for the lt1, its a heads and cam package theres 3 of them

**Redphoenix1998** · 09-17-2007, 12:48 PM

You can swap in any engine but an LT1 will be cheaper. No matter what, you will have to change your motor mounts, wiring harness, ECM, and possibly the driveshaft drivetrain. Last I recall, the V6's had a two piece driveshaft but I'm not sure if that changed or not with the later v6 4th gens

**ATCharming** · 09-17-2007, 12:53 PM

wellif an lt1 is cheaper, it sounds like the way to go since it has just as much potential as an ls1 (even more actually) itjust doesnt have the head start.

**JwMonE99** · 09-17-2007, 01:51 PM

Originally Posted by 35thAnniZ28

Le1!?!?!? If You Mean Lt1..its Not Putting Down Close To 360-390 To The Wheels...if Le1 Is Somekind Of Alien Engine That Creates Gobs Of Power..clue Me In..

No I actually mean LE1, its a kit for the LT1, there are 3 in the series. LE1 LE2 LE3. I think for the money LE1 is the best one casue you get 360-390 for a potential another 30 hp is a few hundred dollars and then the LE3 is a potential of another 10hp and still another few hundred dollars.
Here it is http://www.eportworks.com/lt1.html