LT1 in an IROC?

I have an 86 Iroc with a 305 that is starting to go out. I am thinking about swapping the engine for an LT1 out of a fourth gen. Does anyone know the horsepower specs on the LT1's. Also how hard is it to swap them? Are there any sites dedicated to the swap? Any info would be apretiated.

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I have a 350 in my 89 Iroc and its a LT1 (5.7TPI)
so it might be cheeper if you swap it from a 350 iroc......
later,
aaron


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~Aaron~
1989 Camaro Iroc - Z28
5.7TPI
310hp

Aaron, A 350 TPI and a LT1 are very different engines. No 3rd gen came equiped with a LT1.
Brian, a LT1 swap isn't all that hard. If you do a search on www.thirdgen.org (http://www.thirdgen.org) 's motor swap forum you will find tons of info. They were rated at 275 and 285 hp. You want a 94-95 one if you are going to use the stock computer, they were sequential fire but still OBD I.

Do a search here, theres about 5 or so members I've seen that have done this swap, myself included.
My website in my sig will provide you with SOME info, but its not really a guide...
Hope that helped!

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Goofy's LT-1 87 Camaro (http://camaroz28.cardomain.com/member_pages/view_page.pl?page_id=177721&page=1)
Status------------------
Car just needs paint job!
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I am in the process of building my LT1 into an LT4 heads, intake, and LT4 Hot Cam.

I have some pics of some of the progress here, http://www.donpagevideo.com/pics/lt1/


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1986 Trans Am WS6
LT4 350, LT4 Hot Cam, T56, 52mm TB, , MSD 6A & Blaster 3 Coil, LT1 3.42 Posi/Disc Rear, Lakewood LCA's &
Adjustable Panhard Bar, Jamex Lowering Springs, 17x9 WS6 Wheels,
T-Tops, Custom 4" CAI w/ K&N Filter, 160*stat.
Autometer TriplePod.
High Speed Run: 157mph
Best 1/4 mile run: 14.94@91.67mph (http://www.blackbird.cz28.com/slips.htm) This was with the LG4 carb setup.
WS6 Trans Am. (http://www.blackbird.cz28.com/)

I start next week on my l98 to lt-1 swap, i excited. I here those lt-1's are pritty quik in irocs i dont know thow, does anyone have any times?

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89' red iroc-z
386 stroker 10.5.1
ross pistons
eagle h-beam rods
Mini ram, 58mm tb
30#lbs,255 high flow fuel pump
slp cam, 1.6rr
edelbrock performer heads p+p 2.02 1.60
Hooker super comps, Mufflex 4' exhaust
Ford 9' 4.11 gears, detroit locker, 31 spline
Full suspension
B&M mega shifter,2800 stall
baer rear brakes,line lock
converted to speed density
Ed Wright dyno tuned


89'red Iroc-z 5.7 TPI
t-tops grey interior
free mods, exhaust

Hey irocbob89...let me know how it goes and I'd like to check out the finished product. I'm in Chicago also and am just gathering everything I need to do the swap also in an '87 Trans Am to Lt1 6 speed. I'll probably start in the end of July if all goes according to plan. Good Luck!!!

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SOLD: 1999 Trans Am, Silver, CAGS, IAT resistor, Screened out MAF, BMR STB, FlowMaster, LS1 Motorsports lid w/K&N. SunCoast WS6 style hood. B&M Ripper Shifter.
"The Surgeon General Never Said Nuthin' 'bout Smokin' The Competition"

hey good luck to you to. where do you live? that would be great if we could compare notes or something. Ill post when i have a problem, i hope you will do the same. Ill be happy to show you when its finnished. later
Bobby

Im in Hoffman Estates

<font face="Verdana, Arial" size="2">Originally posted by irocbob89:
I start next week on my l98 to lt-1 swap, i excited. I here those lt-1's are pritty quik in irocs i dont know thow, does anyone have any times?

</font>Times are in sig. That was with a Moroso CAI and SLP headers and 3" exhaust. Other than that it is stock. The sorry 60' times will be fixed soon and then I should see much better ets. The mph is good though.



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Pix of my rides! (http://mdawson-91rs.cz28.com)
Finally have some pictures of Y2k Vette wheels, motor, etc.

*1991 Camaro RS !LO3
8.84@85.3mph NA
*1988 Mustang 5.0 7.92@87 NA- For Sale
*1988 Mustang GT 'vert
9.56@73-bone stock
*1986 Kawasaki Ninja 1000R 7.30@100mph
*1987 Honda CRX Si 16.5@85mph-stock

100% American!

I've got an LT1/T56 combo. Check out the website in the sig...it's been of help to a lot of people.

Eric

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LT1Powered85Z (http://lt1powered85z.cz28.com)
LT185Z (http://lt185z.cz28.com) (F4i, Stealth R/T TT, etc)
-'85 LT1/T56 Z28
-'01 Honda CBR600F4i
Administrator of The Minnesota F-Body Club (http://www.mnfbody.com)

I'm as far southeast in Chicago as you can go...the neighborhoods known as Hegewisch actually. I can spit on Indiana from where I'm at. I will post whatever problems I come across but like I said before...I'm not starting until the end of July...currently just accumulating parts. Man this is going to be some big bucks.

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SOLD: 1999 Trans Am, Silver, CAGS, IAT resistor, Screened out MAF, BMR STB, FlowMaster, LS1 Motorsports lid w/K&N. SunCoast WS6 style hood. B&M Ripper Shifter.
"The Surgeon General Never Said Nuthin' 'bout Smokin' The Competition"

http://www.fuelinjection.com/portinj.html
http://350.streetracing.org/lt1.htm
http://sethirdgen.org/vss.htm
http://www.thirdgen.org/newdesign/tech/techdb.shtml
http://www.iroczsource.com/lt1.htm
http://www.sethirdgen.org/vats.htm

Here are a few links I've gathered that may help. Another thing I've read somewhere is that a passengerside motor mount from a '94 Caprice can be used with out having to do any modding to it. If anyone can verify this please do so.

Also, if anyone has any other good info sites, please post them.

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SOLD: 1999 Trans Am, Silver, CAGS, IAT resistor, Screened out MAF, BMR STB, FlowMaster, LS1 Motorsports lid w/K&N. SunCoast WS6 style hood. B&M Ripper Shifter.
"The Surgeon General Never Said Nuthin' 'bout Smokin' The Competition"

What is the benefit of going with the LT1 (or even LS1) over a built Gen I motor with the TPIS MiniRam II intake?

Is the LT1 worth the wiring changes as opposed to building a 355 or 383 and running the TPIS MiniRam intake and using the stock ECM and burning your own chips? I ask because I have a non-LT1 350, 1 piece rear main seal block that I planning on using for a 383 build up and running the MiniRam II intake. Would it be worth considering the LT1 (or even a LS1) instead?


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Eric Mann
eric91z@mchsi.com
'91 Camaro Z28

IMHO, its not worth the money. You can buy a set of noce heads, cam, intake and some extra motor mods and make a lot more HP's over the LT1 motor for about the same price.

Not to mention having to re wire the engine bay... http://web.camaross.com/bb/frown.gif http://web.camaross.com/bb/frown.gif

I'm building up a 383 with AFR heads and miniram II intake and its costing my just a little more than an LT1 swap would cost.

these (http://www.hpsalvage.com/) people have done many of those swaps. might want to check out their site(contact them) as they probably have tons of info as well

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1992 Camaro RS LO3/700R4
Holley 600 Double Pumper, Weiand Stealth Intake Manifold, Hedman Headers and Modified Hedman Y-Pipe(Ported and 3" Pipe), Straight-Pipe Cat, Flowmaster 3" 2 Chamber Race Muffler, 160º thermostat, 3.73 Posi, Boxed LCAs, Kumho 255/50s, Polyurethane Transmission Mount, and B&M SuperCooler.
Waiting To Be Installed: ZZ4 Cam

Im getting a complete motor with tranny and computer for $1000 or so with 21k miles on it. Im buying a painless wirring harness for $600. So that is about $1600 give or take about $400 for some other little stuff and im looking at a newer engine, that is fast for about $2000. Not to bad. I think the motor mounts are the same, the tranny mount is the same, so i dont have to worry about that crap. Everything else is just wirring witch can be figured out with in a week so its no big deal just intimidating i think. I have to make some phone calls to make sure im for sure on what im going to ge myself into. But i think it will be worth it. later
Bobby

BTW: if you have the money for a miniram and afrs on a 383, that is almost a for sure setup to get into the 11's. Its definitly worth the money. I dont have to much money so that is why im going with an lt-1 and not a rebuild or building a car or something.

I just got done swapping the LT1 into my 92 firebird tbi, and from my standpoint I say don't do it unless you plan on spending a lot of cash. But if you do check out hpsalvage.com They're great and can answer any question you throw at them. Personally I would get my wiring harness from injectiontechnology.com about $530 shipped with vats bypass included. Also I would use a 1993 ecm because 93 was the only year not to use mass air flow. Stock Hp on the LT1 is 275 up until 95 it hit 285 and in 96 300 all corvette motors(4 bolt main) were 300+. If you have any questions feel free to email me. Also some info you might need If it was tbi you need a stronger fuel pump if it was tpi your fine. if you want to keep ac you have to pound in the cross member, Some say to heat it but by I didn't so it would stay strong and it only took a 20oz claw hammer. My car goes back on the road ina little over a month and its getting a procharger in the next week. To those of you that choose to swap the LT1 good luck it's not that hard but it is time consuming.

I forgot to mention for the guy before my first post. The LT1 motor mounts are not the same. All you have to do is use your stock mounts from your motor. The LT1 has extra holes next to its original mounts.

<font face="Verdana, Arial" size="2">if you want to keep ac you have to pound in the cross member, Some say to heat it but by I didn't so it would stay strong and it only took a 20oz claw hammer</font>
I just cut a section out and welded it back in place. IMO thats the best way to keep as much strength as possible, plus it looks better than hitting it with a hammer http://web.camaross.com/bb/wink.gif.

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Goofy's LT-1 87 Camaro (http://camaroz28.cardomain.com/member_pages/view_page.pl?page_id=177721&page=1)
Status------------------
Car just needs paint job!
------------------------

My car goes back on the road ina little over a month and its getting a procharger in the next week.

I'll bet money you don't have that procharger on yet. I have the kit sitting in my kitchen waiting for some attention but it isn't getting any. Let my know if you find an easy way of putting it on.


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Pix of my rides! (http://mdawson-91rs.cz28.com)
Finally have some pictures of Y2k Vette wheels, motor, etc.

*1991 Camaro RS !LO3
8.84@85.3mph NA
*1988 Mustang 5.0 7.92@87 NA- For Sale
*1988 Mustang GT 'vert
9.56@73-bone stock
*1986 Kawasaki Ninja 1000R 7.30@100mph
*1987 Honda CRX Si 16.5@85mph-stock

100% American!

<font face="Verdana, Arial" size="2">Originally posted by slimdawson:
My car goes back on the road ina little over a month and its getting a procharger in the next week.

I'll bet money you don't have that procharger on yet. I have the kit sitting in my kitchen waiting for some attention but it isn't getting any. Let my know if you find an easy way of putting it on.


</font>What year is the Procharger kit intended for?

If it's for a 4th Gen car...GOOD LUCK. I've already been down that road. I had a kit for an LT1 car, and the mounting brackets mount the head unit right where your steering box is.

A few of us (from the board) did a TON of searching, looking for brackets to allow it all to work. No luck anywhere.

*shrug*

Eric

<font face="Verdana, Arial" size="2">Originally posted by LT1Powered85Z:
[QUOTE]Originally posted by slimdawson:
[b]My car goes back on the road ina little over a month and its getting a procharger in the next week.

I'll bet money you don't have that procharger on yet. I have the kit sitting in my kitchen waiting for some attention but it isn't getting any. Let my know if you find an easy way of putting it on.


</font>What year is the Procharger kit intended for?

If it's for a 4th Gen car...GOOD LUCK. I've already been down that road. I had a kit for an LT1 car, and the mounting brackets mount the head unit right where your steering box is.

I have noticed how close it sits to the steering box but I think with the procharger unit aimed straight down it will clear. If it doesn't I will modify it and let you guys know. Has anyone put any SC on the LT1 in the third gens? By the way my week is over and I haven't touched it but I will soon.

OK I started messing with the Procharger today and it's not going to fit. With some modification it can but I don't have time for it now so I might post it for sale soon. I think to fit it in the third gens it has to go up a few inches from where it is intended I will have to drill one hole in the mounting plate and add on a couple inches towards the bottum of the plate and only go with three bolts holding it on. And it will need a much longer belt. All this will make it so I have to find somwhere to put the tubing. It is possible but it will be a royal pain. My whole car is modified and engineered so I might go for it. Again if anyone knows of a system that does fit please let me know.

Thanks