Hooker Blackheart 1967-72 C10 Truck LS/LT Swap System Info Thread

[flashed]

Which size would be better for a stock 5.3 engine ?

[toddoky]

Originally Posted by flashed

Which size would be better for a stock 5.3 engine ?

If you are referring to the exhaust systems, the answer would be the 2.5” system in your application. If you are referring to the coming headers, I wouldn’t put 1-3/4” headers on any LS engine other than a stock 4.8L, but others do use them on 5.3L engines.
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