2007 GMC Seirra Classic 4.8L

Asked by Jul 26, 2017 at 11:30 AM about the 2007 GMC Sierra Classic 1500 SL2 Crew Cab RWD

Question type: Car Customization

I have a  great running 4.8L with 200,000 miles in
my truck and it lacks the horse power pulling a
large size boat up hills and overall performace. I
feel this motor is for the dad that putts around
town. What are my options with installing a 5.3L or
larger in my truck, also I live in California. Smog?

1 Answer

125,695

Not in California, the Vin shows the stock engine size and if that is not what is in the rig then you automatically fail the inspection. Best to locate a rig with a larger engine and get it, trade the under powered one in or sell it outright.

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