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ls1nova71 · 09-29-2013, 08:32 AM

There's no difference between a 5.3 and 6.0 intake, but there are year differences. 99-02 and 03-07 are two different intakes, but only where the throttle body is concerned. They moved the PCV line from the TB to the intake in 03. But it can be worked around. Also van intakes are different from trucks as they don't have the same mounting provisions for mounting the Vortec cover. Again, that's minor, but you asked. Lol!

Also you can't port and polish them. Well, technically you could, but you won't gain anything from it. People have tried it but found out it just isn't worth the effort.
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09-29-2013, 08:32 AM	#32
ls1nova71 Registered User Join Date: Dec 2009 Location: Independence Mo Posts: 4,118	Re: 2003 LSx swap thread...here we go There's no difference between a 5.3 and 6.0 intake, but there are year differences. 99-02 and 03-07 are two different intakes, but only where the throttle body is concerned. They moved the PCV line from the TB to the intake in 03. But it can be worked around. Also van intakes are different from trucks as they don't have the same mounting provisions for mounting the Vortec cover. Again, that's minor, but you asked. Lol! Also you can't port and polish them. Well, technically you could, but you won't gain anything from it. People have tried it but found out it just isn't worth the effort. Posted via Mobile Device __________________ My '72 short bed build. http://www.ls1tech.com/forums/conver...6-0-4l80e.html 5.3 swap into my RUSTY '71 C10 http://ls1tech.com/forums/conversion...71-c-10-a.html Last edited by ls1nova71; 09-29-2013 at 08:48 AM.