LS1TECH - Camaro and Firebird Forum Discussion - Whats the stock manifold primary tube size?

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Thrasher245

10-29-2005 12:15 PM

Whats the stock manifold primary tube size?

Whats the stock manifold primary tube size? What size is the exhaust outlet on the head?

WILWAXU

11-04-2005 05:20 PM

My guess would be something like 1.5"

Redneck Z

11-04-2005 05:49 PM

My JBA's are 1 5/8, and were visually smaller that the stock primaries.

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