As the other guys said depends on HP range. getting over 550 or so a Torker II will pick up a lot over any factory intake( I swapped them) and is shorter than the RPM and with a little squeeze a factory base can fit but tight. Any air filter is going to be restrictive. A Shaker base K&N high flow filter when my motor was tuned for it and pulled it out lean popped out the Shaker-quite a sight at night!
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Skip Fix
1978 Trans Am original owner 10.99 @ 124 pump gas 455 E heads, NO Bird ever!
1981 Black SE Trans Am stockish 6X 400ci, turbo 301 on a stand
1965 GTO 4 barrel 3 speed project
2004 GTO Pulse Red stock motor computer tune 13.43@103.4
1964 Impala SS 409/470ci 600 HP stroker project
1979 Camaro IAII Edelbrock head 500" 695 HP 10.33@132 3595lbs
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