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I have a 05 Denali 6.0, it seems the oil pump quit and it’s now locked up.
First question is can I swap a 5.3 in with out any hassle and if not what does it take to work?
Second question is what years are interchangeable and should I be looking for a certain year versus another due to better quality? And yes I realize it’s really 4 questions lol.
Everything will physically bolt up the same however without a cal for a 5.3 it’s not going to run correctly.
It should have an LQ9 (higher compression 6.0 found in Silverado ss, escalade, Denali). 03-06 would be the year range to look for. An LQ4 would work as well. Slightly lower compression but much more abundant as these came in HD pickups.
Using the matched PCM taken from the same vehicle youd obtain the 5.3L from, it might be plug & play. Otherwise, the other option might be to flash it. I'm not sure if you'd require dealership support still...
I have a buddy who put a 5.3 in a 4.8 truck and it ran on the original PCM. It seemed to run fine but he got an aftermarket tune fairly quickly after the swap
Swapping PCM's might be an option, but is the wiring the same pin for pin on each?
I have no experience with any LS engine, but that would be my question when trying to run A with B.
PCM swap would likely result in a no start due to conflict of VINs between pcm/bcm
Yeah kinda what I figured just wasn’t sure about the reluctor wheel and that stuff, I’ll just spend a few extra dollars and get the 6.0 when I do it. Not gonna be anytime soon with this weather and my work schedule. Thanks for the help fellas.
that is what I was unsure of. The vin can be changed in the PCM tho.Quote:
Originally Posted by RSpencer
Actually a 5.3L from 2001-2007 should work fine even with the stock computer and harness from your truck. The 02's will reset your long term and short term fuel trims and it should run a-ok.
The 5.3L and 6.0L use the same injectors, just slightly different amounts of fuel. If you want to sell the smoked 6.0 I might be interested.
as long as it’s 24x it should be fine right?Quote:
Originally Posted by ultradriver10000
Just have someone put a stock 5.3 flash in
Cost of tuning could be the same as just doing a 6.0 vs 5.3. No?
pretty much what I was thinking, I have a 5.3 sitting but I’ll just get another 6.0Quote:
Originally Posted by AutoRoc
Yeah exactlyQuote:
Originally Posted by BrainFearGone
It won't even matterQuote:
Originally Posted by 1BADAIR
compare a 6.0 tune and a 5.3 tune... the differences are negligible when you take into account that the stft/ltft can adjust ~10%Quote:
Originally Posted by AutoRoc
up to you if you care.... the 5.3 would work fine, you'd be down a little torque, but if you don't tow a lot you'd be fine.Quote:
Originally Posted by mikesfastss