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Customer q:
I have a stock 2000 GMC Sierra 5.3L. What kind of heads can I put on there that will run good and add horsepower? And how much of a horsepower gain will there be? Thanks.
CAR MAKE & MODEL
ac = Yes
drivewheel = 2WD
engine = 5.3
fuel = Efi
make = Gmc
model = Sierra
pwrbrk = Yes
pwrstr = Yes
trans = Automatic
year = 2000
JEGS ANSWER:
Thank you for giving JEGS the opportunity to assist you with your technical question. 243 heads are the best upgrades for a 5.3 as a bolt on budget head. If you want something we sell, you can look at the small bore LSX heads.
As far as added horsepower, you will get a lot. Those heads on an all stock setup which will make 40-60 more hp and with a mild cam, they will pick up too 100hp with no other changes. If you need any additional help, please reach out to us 24/7.
car specs
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