puma_223

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

1quickirocz

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.

puma_223

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

jfg455

iTrader: (5)

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.

deuce4935

iTrader: (2)

Read and follow this link, everything is detailed, use your stock trans and case also.
http://www.hotrodlane.cc/PDFFILES/Lisa%20Tahoe.pdf

1999FirehawkLS1

iTrader: (21)

Like!

gmc2313

thank you for the awesome link that made my decision to do the swap a no brainer!

Ross Lawson

What did you do for the a/c bracket?

tfi racing

iTrader: (2)

Holy crap! Resurrect a useless poll from six years ago? Let me tell you about this computer thingie I just heard of just the other day, it think its called oogle or something like that...

Txfreak77

hi I know I'm late to this thread by a few years but I was wondering if you still had the link for a5.3 swap in a 97 k1500. I would really appreciate it. I need all the help I can get thank you

Fast355

I have Lextech brackets for the 6.0L I was going to put into my 1997 Express. Mounts the stock 5.7 Vortec compressor in the stock location.

I would not even consider using a stock 5.3 in place of the Vortec 5.7. It will feel gutless until you get to the top-end of the powerband. A tuned stock 6.0L doesn't pull ahead torque wise until the 4,000+ rpm range either.

I decided to just build the 350 up instead. I have a 6" rod 383 ready to go into it in place of the 350 with the 24x coil per cylinder and the Marine intake on top. I am not after top-end power. I could care less how well the thing pulls beyond 5,500 rpm so long as it makes big torque numbers in the 1,500-5,000 rpm range I run when towing my 6,000 lbs Jayco travel trailer.

Personally if i had a GMT400 4x4 truck and was considering any kind of a swap. It would be an 8.1 from a GMT400 3500HD or Express/Savanna van.