290hp 350 heads upgrade?

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77 K20

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Joined
Nov 9, 2012
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3,079
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Location
Montana
First Name
Mike
Truck Year
1977
Truck Model
K20 5" lift
Engine Size
HT383 fuel injected
He got the E-street 64cc 185 heads. Not quite as good as the E-tec heads, but cheaper and way better than the stock heads.
 

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