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Junk all the emissions stuff???

NVvetgirl

Member
Joined
Jul 18, 2004
Messages
22
Location
Las vegas
Corvette
75 Stringray
I am finally making my 1975 Vet into a dedicated road race car. I will not use it on the street. From a pure engine cleanup point of view, can I just remove all the emissions controls and get rid of them or do I need to keep some of the vacuum lines or just plug up holes where they were? As you can tell, I'm new at this. :confused;help
 

Crimson Thunder

Well-known member
Joined
Dec 16, 2001
Messages
814
Location
Orange Park FL USA
Corvette
1970 Marboro Maroon Convertible
I'm assuming your going to run headers and dual exaust on your race car,so i guess you can junk the catalitic converter, the air pump,and all the related hoses.I would keep the PCV valve hooked up along with the charcol canister.
 

Vette79

Well-known member
Joined
Jan 23, 2007
Messages
1,392
Location
Millersville, MD
Corvette
1979 L-48 Black Coupe
Just went through this. I removed everything except the PCV. To me it feels like it is a bit more responsive. You can get an EGR block-off plate from Sumitt.
 

minifridge1138

Well-known member
Joined
Feb 2, 2007
Messages
908
Location
USA
Corvette
1982 Black Fastback
As they have said, you can remove all of the emissions stuff.
EGR, AIR Pump, Catalytic Converters, etc.
It will only have a positive impact on performance, you'll have 1 less fan belt, the engine compartment will be much neater, and you'll have an easier time doing maintenance (parts will be easier to reach).

I've already done all of the things listed above, but I kept the PCV valve. That is not an emissions thing and it will help keep your oil clean.

Since this will be a dedicated road car, I would recommend changing the camshaft, rocker arms, carburetor (depending on what you have), headers, and intake. That combined with removing the emissions stuff will give you a serious boost in performance. Certain intake manifolds won't even have a place for EGR, so you won't need a block off plate (that's what I have).

Post any questions if you have them. Everyone is new when they start.

Good luck and Have fun!
 

Vette79

Well-known member
Joined
Jan 23, 2007
Messages
1,392
Location
Millersville, MD
Corvette
1979 L-48 Black Coupe
Oh yea. I'm almost there. Need to change intake and cam and then "happy, happy-Joy, joy".
 

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