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**PICKMUP** · 04-28-2006, 12:02 AM

88 and newer cast 454 manifolds flow better/much better than our old restrictive ones, especially on the LH side where ours makes a square turn down.

04-28-2006, 12:02 AM	#4
PICKMUP "Trucks with Class" Join Date: Jul 2000 Location: OLYMPIA, WA, USA Posts: 8,122	Re: Big Block Cast Iron Exhaust Manifolds 88 and newer cast 454 manifolds flow better/much better than our old restrictive ones, especially on the LH side where ours makes a square turn down.