Small Block Exhaust Manifolds

From Mopedia

LA Manifolds

Casting Number	Broadcast Sheet	Data Plate	Year	Side	Applications	Outlet	Image
2863553	?	?	1968	?	340	2.25	None
3418683	?	?	197?	?	340	2.000	None
33010187	?	?	197?	?	Truck	1.875	None

Magnum Manifolds

The MP LA performance book said that the right side 340HP manifold flows just a bit better than the magnum manifolds, but the left side magnum one is superior to the 340 HP. That'd be the optimal one, but given the rarity of them the magnum ones are the better value. The 92-93 magnum manifolds are the desirable years as they are a bit larger

Casting Number	Broadcast Sheet	Data Plate	Year	Side	Applications	Outlet	Image
53006618	?	?	1992	passenger	?	?	Manifold installed on a B van
53006619	?	?	1992	driver	?	?	Manifold installed on a B van