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Anyone put a 5.3 in a 97-03 Grand prix??



Or a Late 70s early 80s 2 door Malibu with a turbo 3800. Ive seen a few of those sell for 2500 or less on yellowbullet.com
 
ok. Just bought a totalled silverado SS. Gonna put the motor and driveline in my 07 sierra 1500 SLT. Gonna sc eventually but thats a convo for another day and a different website. Anywho the factory 5.3 will be coming out. Is this physically the same motor as the GXP or will i need to modify? I think it should b the same but does anyone know for sure. Im thinking if anything I might need a different flywheel to mate to the 4t65 but i honestly have no idea. Just hoping i dont have to shorten crankshafts and crap like that.
 
You need google in your life.

Putting a 5.3 from a Silverado in your GP is like saying this Nissan 2.0 will work in my Cobalt, because it's a 2.0.
 
Regular 5.3s have standard bellhousing which isn't compatible to the metric pattern all the fwd motors have. So there not combative block wise. Internally everything can be swapped if you wanted to
 


im pretty sure the subframe from an 04+ will fit, I had a 97 and was going to do the swap, I do engine work for a GM dealer and bought a core out of a 06 impala ss, but I sold my 97 and bought a 04 gtp and dont want to change out the 3800(love my supercharger)! anyways, I think you can get a harness made from Painless, but im not sure, I was just going to make one, anywho if anyone needs a ls4 i have one
 
im not sure what they are even worth? I was thinking around 8-900 bucks shipped, i dunno tho?? I have all the gaskets except the head gaskets and head bolts, make a decent offer??
 
mycaddy97 said:
im not sure what they are even worth? I was thinking around 8-900 bucks shipped, i dunno tho?? I have all the gaskets except the head gaskets and head bolts, make a decent offer??
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Local parts yard here has an 08 Malibu SS with the 5.3 in it. They wanted 850 for engine tranny and subframe but that would have been a pull and pay type deal so no shipping so 800 for the motor only shipped sounds pretty accurate.
 




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