LTX and LSX Putting LT1s, LS1s, and their variants into Third Gens is becoming more popular. This board is for those who are doing and have done the swaps so they can discuss all of their technical aspects including repairs, swap info, and performance upgrades.

swapping a tpi with an LS7

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Old Apr 30, 2008 | 12:47 AM
  #1  
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swapping a tpi with an LS7

i am currently working on swapping an ls7 engine into a 91 rs model, i have searched the forums and have found a lot of helpful tips, anything i should know other then what i've already found about mounts transmission rear drive axle etc...etc?
Old Apr 30, 2008 | 08:17 PM
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Car: 92 25th anv z28
Engine: 346 TC78 Turbo
Transmission: 4L80E
Axle/Gears: 3.25 9"Nodular, Strange axles
Re: swapping a tpi with an LS7

Well if your swapping a ls7 in a thirdgen...Please post pics. All i can think of is you may have problems with the drysump/crossmember.
Old Apr 30, 2008 | 08:57 PM
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From: Saskatoon, SK, Canada
Car: '83 Z28, '07 Charger SRT8
Engine: 454ci, 6.1 Hemi
Transmission: TH350, A5
Axle/Gears: 2.73 posi, 3.06 posi
Re: swapping a tpi with an LS7

Where did you get an LS7????

Last edited by five7kid; May 1, 2008 at 01:51 AM.
Old Apr 30, 2008 | 09:07 PM
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From: 39.84N 105.11W
Car: '89 Trans Am GTA
Engine: WAS 350 - now L92 (alum. 378/6.2L)
Transmission: WAS 700R4, now a built T56
Axle/Gears: 3.27 9-bolt
Re: swapping a tpi with an LS7

You have an LS7? You officially SUCK. Bastage!














Just kidding, that oughta be a pretty kick-a$$ project, good luck with it...
Old May 1, 2008 | 11:22 PM
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From: Port Charlotte, FL
Car: 1986 WS6 TransAm
Engine: THREEFIDDY!
Transmission: T5
Axle/Gears: 3.73
Re: swapping a tpi with an LS7

Alot of people can come across LS7's and LS6's with luck.. A friend of mine totaled his vette with a LS7 in it, and the insurance company sold it to the scrap yard for 2 grand and my neighbor got ahold of the complete engine for $500. I was pissed i didnt have the cash heh.
Old May 2, 2008 | 07:51 AM
  #6  
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From: PA
Car: 86 Trans AM
Engine: LS1 (not stock...)
Transmission: Built T56
Axle/Gears: Strange 12-bolt w/ 3.73
Re: swapping a tpi with an LS7

Can you make the LS7 non-dry sump?? I thought I remembered reading that you could somewhere... Either way....I would sell my firstborn for a low mileage LS7 right now. I dont have a firstborn...but if I did... haha.

I want to see pictures!!!! Post up some motor pics and some car pics...and MOST DEFINIETLY in progress pics. Will be a bad car when you get it finished....

J.
Old May 3, 2008 | 01:28 PM
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From: Kansas City
Car: 1991 Trans Am
Engine: L98
Transmission: T56
Re: swapping a tpi with an LS7

Originally Posted by ghettocruiser
Can you make the LS7 non-dry sump?? I thought I remembered reading that you could somewhere... Either way....I would sell my firstborn for a low mileage LS7 right now. I dont have a firstborn...but if I did... haha.

I want to see pictures!!!! Post up some motor pics and some car pics...and MOST DEFINIETLY in progress pics. Will be a bad car when you get it finished....

J.
You can convert them but its a LOT of work. I looked into it last year for my 94 Z28 when I thought I was going to get one for CHEAP. To do it, you have to pull the engine apart, swap out the crank with an aftermarket one that has provisions for the crank driven LSx style oil pump. Then you have to have the block machined for atleast the dipstick tube but I think you also have to machine it for the oil pump to mount as well.

There are a LOT of other things that need to be done as well. Unless you want to run the throttle by wire setup (no throttle cable), then you also need to make sure the crank you get is for a 52x (I think) crank signal like the ls1 harness uses. Then you have to buy a new throttle body and some conversion parts to make the throttle cable work. After all that you either need new injectors and fuel rails or some conversion harnesses to work with the ls7 injectors and the ls1 wiring harness injector harnesses.

Like I said, its a TON of work to do.
Old May 3, 2008 | 06:15 PM
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Car: 87 formula
Engine: 5.0 TPI
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Re: swapping a tpi with an LS7

I would just keep the dry sump, isn't it just a matter of mounting the tank? I'm with everyone else about the pictures.
Old May 6, 2008 | 04:57 PM
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From: Holdrege Nebraska
Car: 91 RS
Engine: 383 Stroker 450HP
Transmission: TH350 3500 Stall no OD
Axle/Gears: 30 Spline Axles 4:10 gears
Re: swapping a tpi with an LS7

an ls7 in a 3rd gen would certainly be unique thats for sure.
Old May 7, 2008 | 06:00 PM
  #10  
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From: Fort Hood, Texas
Car: 1991 Camaro Z28
Engine: 2002 SS LS1
Transmission: 6 speed
Axle/Gears: Auburn 3.42
Re: swapping a tpi with an LS7

You can find allot of great info on the following links, Tiberio Performance put an LS7 in a GTO

http://www.tiberioperformance.com/

They have a really cool ride along video on there, and here is one on fquick.

http://www.fquick.com/videos/LS7_GTO/903
Old May 7, 2008 | 09:15 PM
  #11  
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Car: 1987 Chevrolet Camaro
Engine: 305 ci LG4
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Axle/Gears: 2.73 non-Posi
Re: swapping a tpi with an LS7

Yeah, I would keep the dry sump system too, unless you run into real clearance issues, but who knows i have yet to see someone document the swap into a thirdgen. Dude, pics would be awesome!!
Old Oct 6, 2008 | 08:44 PM
  #12  
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Car: 92 Camaro RS 25th Ann.
Re: swapping a tpi with an LS7

count me in on those pics too! Zo6's are rare in the yards here, so as soon as one comes in, they're pretty much already sold. so i guess for me i either have to fork over the $17,495 from Classic Industies, or steal a new vette. as for electrical and injectors, etc, etc...why not use the full harness and comp from the donor vette?
Old Oct 6, 2008 | 10:24 PM
  #13  
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From: Idaho Falls
Car: 82 Trans Am
Engine: LTX
Transmission: T56
Axle/Gears: 3.42 strengthed 7.5 inch
Re: swapping a tpi with an LS7

Been 5 months since we heard anything on this.. I file it under UFO's and sightings of sasquatch..
Old Oct 7, 2008 | 01:14 AM
  #14  
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From: Augusta, Ga
Car: 1987 Trans Am
Engine: 355ci L98 soon to be turbo'd
Transmission: 700R4
Axle/Gears: 2.73 posi
Re: swapping a tpi with an LS7

yeah, did you really think someone had a spare LS7 laying around? The only places that do are race shops and race shops don't go to forums for help... atleat they shouldn't...
Old Oct 8, 2008 | 09:12 PM
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From: Elk City OK
Car: 92 25th anv z28
Engine: 346 TC78 Turbo
Transmission: 4L80E
Axle/Gears: 3.25 9"Nodular, Strange axles
Re: swapping a tpi with an LS7

Yea..When I saw the post I was calling Bull $hit.
Old Oct 10, 2008 | 10:06 PM
  #16  
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Re: swapping a tpi with an LS7

Not nearly as cool as the straight ten I am putting in my third gen...
It was just laying around down by the docs so I picked one up...


I even got my friends to help drop in a new forged crank...
Old Oct 10, 2008 | 11:15 PM
  #17  
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From: California, Sacrameto
Car: 88 gta
Engine: 350 tpi
Transmission: 700r4
Re: swapping a tpi with an LS7

it amazes me you can even machine something that big to motor tolerances.
Old Oct 11, 2008 | 12:39 AM
  #18  
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From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
I don't see the point of this continuing. If the originator wants to fill us in on his progress, he can do so in a new thread.
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