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.

5.3 carb swap

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Old Jan 12, 2010 | 09:09 PM
  #1  
BigO's Avatar
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Joined: Jul 2009
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From: Michigan
Car: 89 IROC-Z
Engine: 5.3
Transmission: 700r4
Axle/Gears: 3.23
5.3 carb swap

Hi everyone. I've finally done it. I got my 350 TPI out and my carb 5.3 hooked to my 700r4 in and running. It was a fairly cost effective swap for the power gains. I did upgrade the cam to match the numbers of the gmpp hot for the ls1 motor, headers, edelbrock performer rpm intake, msd ignition box, b&m 2400 rpm stall, and b&m trans overhaul kit all for around $3000. Let me tell you it moves way better then the old 5.7. If any one has any questions let me know.
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Old Jan 13, 2010 | 01:53 AM
  #2  
bitchin_camarAA's Avatar
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Joined: Jun 2009
Posts: 28
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From: State College PA (penn state)
Re: 5.3 carb swap

what headers did you use?
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Old Jan 13, 2010 | 07:25 AM
  #3  
1ADan's Avatar
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From: Pepperell, MA
Car: 1987 Trans Am
Engine: LQ9/L92
Transmission: 4L60E
Re: 5.3 carb swap

always glad to see another 3rd gen with an LSx swap. Gives me more encouragement and info to get my own going. Any pictures of the swap?
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Old Jan 14, 2010 | 02:23 AM
  #4  
energycontacts's Avatar
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Re: 5.3 carb swap

how is the gas mileage? what year 5.3 you got and does it bolt directly up the 700r4? do you have any pictures of your setup?
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