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LTX and LSX Putting LT1's, LS1's, 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.

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Old 10-25-2009, 06:50 PM   #51
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Join Date: Feb 2007
Location: college station, texas
Posts: 466
Car: 89 T/A,67 Camaro,92 Stealth
Engine: ls1, 468, 183
Transmission: 4l60e, th350, 5 speed
Axle/Gears: 3.42 posi 7.625",3.08 8.2", FWD

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Re: 89 trans am ls1 swap

well i got everything mostly figured out and working on small things. One of the things i am still not sure about is the pcv. I am thinking on putting a breather cap on driver side valve cover and blocking off the line comping on the back side of the valve cover on passenger side. Then running the one on the front of the valve cover to the intake. Not sure if it would work and still doing some research to figure it out. Also looks like need to get longer spark plug wire and mount the #8 coil pack higher on the valve cover
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67 project Camaro, 468 bbc, th350
89 Trans Am, ls1, 4l60e
91 z28 Camaro - sold
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Old 10-26-2009, 04:16 PM   #52
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Join Date: Mar 2004
Location: Toronto Ontario
Posts: 1,668
Car: 1987 Iroc + 1989 R7U 1LE Players
Engine: LS1 and LB9 5.0L
Transmission: T56 and WC T5

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Re: 89 trans am ls1 swap

The PCV issue is one where your going to get many different opinions I can tell you that much. Im running a breather with zero complaints or issues 3 yrs now. Others have had oil blowing out of theirs, bad smell coming out of it, and some believe it will cause damage to your engine. There are guys running stock PCV with no complaints or issues of oil consumption but they are definitely the exception most stock PCV systems are poor to say the least. A common ground approach is to run a decent quality catch can and this seems to satisfy many.

Or you could take your chances with a breather
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Old 10-26-2009, 07:29 PM   #53
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Join Date: Feb 2007
Location: college station, texas
Posts: 466
Car: 89 T/A,67 Camaro,92 Stealth
Engine: ls1, 468, 183
Transmission: 4l60e, th350, 5 speed
Axle/Gears: 3.42 posi 7.625",3.08 8.2", FWD

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Re: 89 trans am ls1 swap

the cap with the port for the pcv line on driver side valve cover broke during the swap whitch is why i wanted to put a breather on there. I think i will cap all the other ports off for now and will put a breather on the driver side valve cover. Eveentually i will upgrade to a catch can. On a bright side i finally got my custom hot air intake done today. I will order some more pices and will route it trough the battery tray behind the bumper, at least now i can start it up and drive down the street.
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67 project Camaro, 468 bbc, th350
89 Trans Am, ls1, 4l60e
91 z28 Camaro - sold
92 base stealth
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Old 10-27-2009, 06:45 PM   #54
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Join Date: Oct 2007
Location: Stevensville, michigan
Posts: 17
Car: 92 Camaro z28
Engine: LT1 from 96 cadillac fleetwood
Transmission: 4l60e
Axle/Gears: stock 2.77 for now

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Re: 89 trans am ls1 swap

hi there, your swap seem to be going great i see, I have a question about the picture you have of your engine bay with out the engine in it. i am having issues lining my engine up on the mounts, i have the service manual and from the position you have your mount brackets my book says thats the position for the V6 engine mounts. my concern is if i use that location i might be to far back and my cross member and torque arm would be off. by the way i am doing an LT1 swap but its the same mounts and brackets. any insight would help...thanks and also where did you get those mount brackets, i am using new stock ones?
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Old 10-27-2009, 08:05 PM   #55
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Join Date: Feb 2007
Location: college station, texas
Posts: 466
Car: 89 T/A,67 Camaro,92 Stealth
Engine: ls1, 468, 183
Transmission: 4l60e, th350, 5 speed
Axle/Gears: 3.42 posi 7.625",3.08 8.2", FWD

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Re: 89 trans am ls1 swap

lt1 uses regular v8 mounts, the mounts that i am using are ls1 swap mounts.
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Old 11-07-2009, 10:17 PM   #56
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Location: college station, texas
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Car: 89 T/A,67 Camaro,92 Stealth
Engine: ls1, 468, 183
Transmission: 4l60e, th350, 5 speed
Axle/Gears: 3.42 posi 7.625",3.08 8.2", FWD

Classifieds Rating: (1)
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Re: 89 trans am ls1 swap

EDIT: Computer is refusing to send a signal for the fuel pump to turn on. I have vats bypass sending 50Hz signal to the dark blue wire #11 on the red plug to the computer. I used the diagram attached.
Attached Files
File Type: pdf ls1_wiring.pdf (82.7 KB, 12 views)

Last edited by yevgenievich; 11-08-2009 at 04:24 PM.
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