Im going to put an LS1/4L60-E in my 91 Z(daily driven) and I needed some questions answered before I go out searching for the engine/tranny combo. First, is it true that in '01 the intake was revised? Is there any differences in specs over the years since the engine has been made? And should I look for an LS1 from a 'vette or F-body? The reason I ask that is for the accessories.....no difference internally in the motor, right? Sorry for all the questions, just one more. As far as the computer goes(this goes to people who have done the swap), can you use all the stock gauges, etc? I know you cant use the A/C because of where the compressor is on the engine, correct? Anything else I should be aware of? Thanks in advance........

 

Yes the intake and cam was revised in the 01 and 02 LS1. There were some minor design changes to the valve cover bolt pattern but I forget the year ( think it was 98.)

You are better off going with an LS1 from an 01/02 f-body. If you get a corvette engine you will have to swap the oil pan for the f-body one.

You can use the stock guages. Since you have a later model camaro you have a VSS speedometer so that saves you a lot of headaches.

You will have to integrate your existing harness into the LS1 harness. The PCM will have to be reprogramed to disable VATS and for your tire and gear ratios.

You can run A/C. You have to notch the frame unless the vette accessory packege has the compressor in a different location.

Check out the LS1 sticky at the top of this thread.

 

Thanks for the tip(s)....Ive been going all around interenet today getting as much info as possible. I bet I have 300bookmarks..hehe...I did check out the sticky...just wanted to ask some fellow 3rd gen'ers that have done the swap what the in's and out's are....doesnt really seem too difficult. I was wondering about what springs to use in the front since its obviously gonna lift the front some...think the 3rd gen V6 springs would work? or lowering springs for the V6? Im thinking that the LS1 doesnt weigh much more(if at all) as a cast iron 3.1......just some more stuff to think about......

 

I am researching the spring issue now. My front end pitched up 1/2" The ls1 engine is 150 pounds lighter than the old V8. I also trimed 26 pounds when I went with my yank SS 3600 converter.

The problem is that lowering springs will lower the whole car. I need to find a set of springs that will not lower the car too much so I can keep the stock rear springs. I was thinking of V6 springs also. I was not sure about the quality of their performance.

 

Thats my biggest concern also....the thing Im worried about is the springs that are in the car now are setup for the heavier TPI block and when you take 150lbs off of the springs, wont they handle differently? Thats why I was thinking of using Eiback V6 springs in just the front.....just wondering how that would make the car handle......But I did just find a wrecked 02 T/A for $5000 COMPLETE.....thats for the whole car.....nothings really good on it except the drivetrain...but thats what I want. Im gonna go check it tomorrow morning.......is that a pretty good price? Its got 31000mi on it....

 

I was not aware that Eibach made springs specifically for the V6. What's the part number?

I do not think handeling is as much of a consern as the pitching up although it will no doubt be affected in some way.

I would jump on that car 5K is a decent price. After you buy it you can tell me how and where you found it. Then you can replace your eitire drive line like I did

 

To be honest...Im not sure they make a kit either...just hoping or assuming. I got such a great deal on the car being in the right place at the right time. My fiance's uncle owns a salvage shop(u pull it) and when I was over there yest. I saw them bringing it in on a flatbed so I asked him to make me an offer of what he wanted for the whole car. Being that Im sort of "family" he made me a great deal...with a little of my fiance's help no doubt....but oh well. I saw on one website today that there is a place that makes a "plug-n-play" harness for the LS1 swap into a 3rd gen? I cant remember the name...Im sure Ill run across it later. Should I really worry about finding headers for the swap also??? There are guys here running 11's with stock exhaust(minus cats).....Im definitely going to buy the car after I give it the once over....and Im thinking of putting a cam in the motor while its not in the car. Ever heard the "thunder220" cam? I was at www.ls1info.com checking some things out and they have some clips/mp3's of differenct cams/exhausts.....that thunder cam almost sounds as good as my magnum280H in my race car...and it has 11:1 comp.......oh well....time to shop...

 

Just wrote a great reply and my browser screwed up. Will post tomorrow.

 

well, about v6 springs and handling, look at my sig pic. its a 3.1, by the way. plenty of body roll to say the least....

 

Thanks 90firebird. The picture says it all.

 

KYL98,

Sounds like you have a keeper. Any sisters?

Do not waste your money on headers. The 01/02 factory exhaust manifolds flow equal or better than LS1 shorties. There are no LTs available yet and because of space constraints, I doubt there will be.

I have heard of the TR220. I considered it for a while but I went for a smaller duration and high lift instead. I wanted to keep my power down low and boost midrange through 6200 RPM. For a daily drive this was the best compromise. I live in an *** rape state that does emissions so that had to be another factor in my decision. Guys with smaller cams than mine are still in the high 11s. Lastly, do not go with the 112 LSA if you get the 4L60E.

 

Well...I got the car today Its sitting in my driveway.....Im gonna take my old motor out today and work on starting to put the LS1 in as soon as I get the motor mounts from ThirdGenResource. I ordered the LS1 Hot cam from GMPP today. I also ordered a Yank converter...they said it would be about 3200rpm stall??? Im also thinking about a shift kit....or should I just boost the pressure with the LS1Edit??? Or should I just let a pro "tune" the cam after its installed........??? I cant wait to get this thing going......I thought about getting the ASA cam , but realized it wouldnt be too much fun to handle on the street....if it would run...hehe

 

Which Yank did you get?

As far as the cam goes you will need to tune your PCM to get the mist out of it. I believe the LS1 hotcam is 112LSA so you will definately need a tune. DO not forget to to the pushrods and springs.

You can tune the torque managemnt with LS1 edit. I recomend you do not disable it unless you plan on replacing the trans soon after the install is complete. Overall, you can get better results if you let a pro tune it.

 

Has it been confirmed that the corvette accessories will work? If so I will update the sticky.

 

Well...got my motor mounts yesterday evening. I just got done taking the LS1/4L60-E out of the T/a. Now just gotta take my TPI and trans out of the 91Z. I do have a question though.....When I put the LS1/4L60-E in the 91, can I put them in already attached.... or would it be easier to do them seperate??? I have a hydraulic lift available......just wondering if that would save some time. I dont know why Im in such a hurry...still gotta wire everything up after that Oh well...wish me luck...

 

They don't & neither does GM anymore. I would just cut a half a coil or so from the front spring.

 

Thats what I thought about doing....you think it would destroy ride quality too much and/or handling? I dont think it would hurt too much because of the weight difference.....Im also putting on a fiberglass cowl ind. hood.....and taking a/c off....that will really make it sit up in the front...

 

It would be better if you put the engine and trans together. Especially since you have access to a lift.

I am not sure about the corvette accessories. I will look into it.

 

why dont you just ask Thirdgenresource what they used on thier camaro with the LS1?? on their site, they have a whole build up of the suspension parts and pics too.

i dont know of anyone else with a car that was completely overhauled with an LS1,suspension,drivetrain,interior,ext.