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Customer q:
Hi, I'm considering the comp cam # 51-221-4 for my '65 GTO 389. I need good vacuum for the power brakes and also looking for strong low end torque. Car is an auto. Thanks
CAR MAKE & MODEL
engine = 389
make = Pontiac
model = GTO
trans = auto
year = 1965
JEGS ANSWER:
Yes, that cam is within your design parameters for the build of your GTO. You'll need to check piston to valve clearance and either back off the timing or may have to run premium fuel with an octane booster. If you have any additional questions, we are here 24/7. Tahnk you for choosing JEGS and have a great day.
car specs
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