hello, would a ls3 intk manifold with trotlle and injectors fit a 5.3 liter engine.
my truck is equip with the electric trotle body any help would defenetly be apreciated thanks!

 

Short answer is no. The LS3 intake is for the rectangular port heads and you have cathedral ports. The rectangular port heads (L92/LS3) will not fit the small bore of your 5.3L either, as they require a minimum of a 4.00" bore.

 

thanks for the help