5.3 swap to a 97 k1500 - LS1TECH



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View Poll Results: what to do
put a 5.3 setup 13 100.00%
rebuild 305 0 0%
put reman 5.7 in 0 0%
or put 305 vortec stuff on a old tbi 5.7 0 0%
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5.3 swap to a 97 k1500

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Old 05-31-2010, 05:02 PM   #1
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Lightbulb 5.3 swap to a 97 k1500

i have a 97 extended cab with a 305 i can get a great deal on a 5.3 complete also with that i get the harness brain and tranny and i think transfer case whats it gona take to shove that in my truck if its to much can i put a 94 tbi 5.7 and put the 305 heads and intake on it and drop that in. my bottom end is bad in my 305 so looking for an alternative cause i cant seem to find any used 5.7s and wasnt sure about putting a reman 305 or 5.7 vortec in it can anyone help im confused

Last edited by puma_223; 05-31-2010 at 05:09 PM. Reason: take confusion away from readers
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Old 05-31-2010, 05:41 PM   #2
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Well if its truely a "complete" 5.3 then it shouldnt be a big deal. im sure somebody makes mounts for those and there would be a bit of wiring to do. I think the fuel pump would need to be changed too. not sure if that stock pump will do or not. I would do the swap over your other options if your up to it. Will not be plug and play if thats what your looking for.
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Old 06-01-2010, 12:49 PM   #3
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But is it gona plug in on the inside so all my switches and key starts it and my guages work that is what i want to know
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Old 06-03-2010, 12:49 PM   #4
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5.3 in a 97 is almost a bolt in swap. advance adapters 1" set back mount adapters and a 6.0l flywheel w/ spacer plate makes it drop right in. exhaust manifolds drop into the frame like they were ment to be there. Fuel pump puts out enough pressure and flow for the new motor. fan even fits into the stock shroud. Use 01-06 silveado upper rad hose and your lower can be made to work. silverado throttle cable as well. only mod is the wiring harness. Use a 2000 camaro ECT sensor and connector so you can hook up your temp gauge. My total cost of a 02 5.3 into my K3500 was $1754 but I did all the work myself. That was motor swap, new fuel lines, and sendng unit, adapters, exhaust mods, hp tuners credits etc.
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Old 06-03-2010, 01:16 PM   #5
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Read and follow this link, everything is detailed, use your stock trans and case also.
http://www.hotrodlane.cc/PDFFILES/Lisa%20Tahoe.pdf
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Old 05-24-2011, 10:15 PM   #6
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Old 12-08-2011, 09:55 PM   #7
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thank you for the awesome link that made my decision to do the swap a no brainer!
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305, 53, 57, 88, 97, camaro, fuel, k1500, ls1, pump, sensors, swap, swapping, vortec, z71

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