Older vs Newer GenIII 5.3 Build Differences??? (99-04 vs 05-07)
11-17-2015, 08:07 AM
#21
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This is a good page about the gen IV 5.3 I found while looking for information about the LH6 I bought. Good read.
VORTEC 5300 GEN IV V-8
VORTEC 5300 GEN IV V-8
04-02-2018, 07:48 PM
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need help
i have an 04 chevy exc the trans went out so i swapped it to a 5sp everything went toghter smooth and easy but once i put the starter on the fly wheel was rubbing the starter everything came out of a 2001 4.8 truck iv tried 2 different starters and even tried shimming them and still lays into it really need help thanks
10-20-2023, 12:31 AM
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Why not just rebuild your 53 in your your 05 truck with forged internals. That would
I am on a quest to find a motor to work on as a winter project for my truck. I currently have a 2005 1500 4WD Crew Cab with the 5.3 and 180k on the clock. There isn't anything really wrong with the engine, other than it slowly sips coolant, but it runs good for the most part.
I want to semi-mildly build up a 5.3 over the winter, do some head work, bigger cam, pistons, and mainly have a fresh engine that I can drop in the truck in the spring when it starts warming up, have fun in, sound good, and add another 200,000 miles with onto the truck. When calling around to local yards and looking online, I can find a bunch of 99 5.3's for between $150-$250, but can't seem to come across very many 05-07 5.3s. If I do, they are asking an arm and a leg for them... I know in 05 they changed the piston and wrist pin to a floating design, is there anything other than that internally that's different? Are the connection rods and cranks the same? I am planning on dropping in new pistons in the engine anyway with the rebuild. In that case, would shelling out the extra cash for an 05 engine be a waste versus just getting a 99-04, if after doing new pistons makes them identical? That's basically my main question. Could I get away with just doing pistons/wrist pins, or would I have to do rods as well? Or is there more different internally than just that? The reason I ask is because when looking at pistons, some say fits years 99-04 and other will say 05-09. Assuming this is because due to the redesign in 05, would that mean I would need new con rods as well as pistons if I wanted to use the 05-09 style pistons in a 99 engine, or is there some reason they wouldn't work?
I have a 2000 Sierra with the 5.3 as well that I am planning on selling soon, but it has the dreaded piston knock/slap when it's cold. I enjoy my 05 not doing that, and I don't want to have to think about/hear that with the new engine which is the main reason for asking this question...
I want to semi-mildly build up a 5.3 over the winter, do some head work, bigger cam, pistons, and mainly have a fresh engine that I can drop in the truck in the spring when it starts warming up, have fun in, sound good, and add another 200,000 miles with onto the truck. When calling around to local yards and looking online, I can find a bunch of 99 5.3's for between $150-$250, but can't seem to come across very many 05-07 5.3s. If I do, they are asking an arm and a leg for them... I know in 05 they changed the piston and wrist pin to a floating design, is there anything other than that internally that's different? Are the connection rods and cranks the same? I am planning on dropping in new pistons in the engine anyway with the rebuild. In that case, would shelling out the extra cash for an 05 engine be a waste versus just getting a 99-04, if after doing new pistons makes them identical? That's basically my main question. Could I get away with just doing pistons/wrist pins, or would I have to do rods as well? Or is there more different internally than just that? The reason I ask is because when looking at pistons, some say fits years 99-04 and other will say 05-09. Assuming this is because due to the redesign in 05, would that mean I would need new con rods as well as pistons if I wanted to use the 05-09 style pistons in a 99 engine, or is there some reason they wouldn't work?
I have a 2000 Sierra with the 5.3 as well that I am planning on selling soon, but it has the dreaded piston knock/slap when it's cold. I enjoy my 05 not doing that, and I don't want to have to think about/hear that with the new engine which is the main reason for asking this question...
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