VETO

hey guys im about to install some flowtech shorty headers, question is I already know engine bay will get hotter but will that increase my chances of engine overheating as well, thanks in advance.

techrep

iTrader: (1)

David Young

No

JCH841

No. But look into header wrap. Several people claim that keeping the heat in until the collector further increases scavenging and efficiency.

Steve83

Not the engine, but everything else IN the engine bay will get toasted or roasted. What are you trying to accomplish? The factory manifolds flow plenty for a truck. Headers will NOT make it perform like a car, or help in any other way. They just leak exhaust into the HVAC system, & melt all the nearby plastic.

VETO

Thanks guys & steve83 my manifold on the passenger side is cracked so I figured ill just put headers instead I figured they were better but had no idea they can cause damage to the surrounding plastics that bad.

sdmartin65

Actually headers combined with open air filter is good for some noticeable gains. If you cheap out on headers they are a pain. Need ceramic coated headers with stage 8 or equivalent hardware and a decent gasket, but those few items run a lot more than exhaust manifolds.

Steve83

Just buy a new direct-replacement manifold, and install it properly. It'll work better for longer with less hassle than headers. Read this & the NEXT 2 captions:


(phone app link)

This album shows more:


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Those are all original (~25-year-old) manifolds.

VETO

thanks sdmartin65 and thanks again steve83 your awesome sir.