Intake port

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Feb 25, 2009 | 05:57 PM

Z282C4

Thread Starter

Instructor

Joined: Apr 2005

Posts: 109

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From: MIDWEST

Intake port

My intake ports got ported bigger than my head intake ports, is that going to slow me down or cause any problems?

thanks

Feb 25, 2009 | 06:38 PM

blue94

Pro

Joined: Aug 2004

Posts: 549

Likes: 13

From: Richmond VA

you don't want the intake ports larger than the head's port... you lower the velocity

Feb 25, 2009 | 07:06 PM

StealthLT4

Safety Car

Joined: Dec 2006

Posts: 4,290

Likes: 6

From: St Marys GA

yes, that is bad. You actually want your head ports to be a little BIGGER than the manifold ports on the short side (maybe a 0.05" step helps with turbulence into the cylinder).

Feb 25, 2009 | 08:22 PM

pologreen1

Team Owner

Joined: Dec 2007

Posts: 20,974

Likes: 261

get porting

Feb 25, 2009 | 08:41 PM

redrose

Melting Slicks

Joined: Feb 2006

Posts: 2,753

Likes: 15

From: backwoods upstate ny

theories/smearies

for many years, Ferd marine 460 c.i. engines came factory fitted with the Ferd "super cobra jet" intake manifold that has ports about 1/4" larger than the cyl head ports...said to have added 20+ hp to the engine over using the "standard" intake manifold that closely matched the heads .