Intake is Outgoing

Disclaimer: Links on this page pointing to Amazon, eBay and other sites may include affiliate code. If you click them and make a purchase, we may earn a small commission.

Jimbarry

Full Access Member
Joined
Aug 19, 2021
Posts
141
Reaction score
317
Location
California
First Name
Jim
Truck Year
1983
Truck Model
C30
Engine Size
454
Just joined the square body club 2 months ago when I bought a too good to be true 83 dually in GREAT shape for a ridiculously low price. It just passed the onerous California smog test and seems to run good, lots of new and rebuilt mechanical, and body/interior have no serious flaws. Tires are almost new. The problem is I need a lil help with the intake. It's an after market aluminum (not sure the make, can't find any markings) and due to (I think) dissimilar metal erosion, it was eaten out at the heater fitting. It leaked onto the manifold galley. I cold repaired it without removing it with JB (great stuff) and some stop leak but I think it's still leaking internally as the water level is going down after 100 or so miles. Trying to find a OEM non-egr (EGR is routed to the smog pump) intake to replace the washed out one. Anybody have one that they aren't in love with? It's not a "have to have" and I can take my time finding one. I'm not sure if it's oval or square ports but I'll pop the valve cover and check the head casting numbers to verify. Also, if I'm way off base on OEM and there is a better non OEM one that will pass California smog BS please advise.....
 

Jimbarry

Full Access Member
Joined
Aug 19, 2021
Posts
141
Reaction score
317
Location
California
First Name
Jim
Truck Year
1983
Truck Model
C30
Engine Size
454
LOL, kinda like crypto square body currency??? Here ya go!!

You must be registered for see images attach


You must be registered for see images attach


You must be registered for see images attach


You must be registered for see images attach
 

AuroraGirl

Full Access Member
Joined
Sep 8, 2019
Posts
9,214
Reaction score
6,195
Location
Northern Wisconsin
First Name
Taylor
Truck Year
1978, 1980
Truck Model
K10, K25
Engine Size
400(?), 350
to pass california smog your intake needs to support what your VECI label says. could you show us that sticker.
 

SquareRoot

Full Access Member
Joined
Mar 18, 2017
Posts
3,698
Reaction score
6,693
Location
Arizona
First Name
Mike
Truck Year
85
Truck Model
K20
Engine Size
350
Nice truck. Good score.
 

Jimbarry

Full Access Member
Joined
Aug 19, 2021
Posts
141
Reaction score
317
Location
California
First Name
Jim
Truck Year
1983
Truck Model
C30
Engine Size
454
Thanks, I like it a lot. The emission label is missing, I was hoping someone here would know what an 83 needs. I have the original sticker showing options but no other info.
 

AuroraGirl

Full Access Member
Joined
Sep 8, 2019
Posts
9,214
Reaction score
6,195
Location
Northern Wisconsin
First Name
Taylor
Truck Year
1978, 1980
Truck Model
K10, K25
Engine Size
400(?), 350
Thanks, I like it a lot. The emission label is missing, I was hoping someone here would know what an 83 needs. I have the original sticker showing options but no other info.
Can I see that sticker? Also you have a 1983 c30 drw long bed conventional cab. Is it a 350? What trans? If I was wrong about it being 2wd, tell us your specs. Does it have 2 smog pumps? Perhaps a computer controlled carb or evidence of one at all? Anything look original that looks emission related that you can tell?
 

Jimbarry

Full Access Member
Joined
Aug 19, 2021
Posts
141
Reaction score
317
Location
California
First Name
Jim
Truck Year
1983
Truck Model
C30
Engine Size
454
It's a 454 with a 400 trans, one smog pump with an EGR inlet on the top. No computer, never had one and it just passed smog 2 weeks ago. Just want to make sure it will continue to do so. Here's the option sticker.

You must be registered for see images attach
 

AuroraGirl

Full Access Member
Joined
Sep 8, 2019
Posts
9,214
Reaction score
6,195
Location
Northern Wisconsin
First Name
Taylor
Truck Year
1978, 1980
Truck Model
K10, K25
Engine Size
400(?), 350
how did you pass emissions if you didnt have a sticker :O

but that sounds nice
 

Jimbarry

Full Access Member
Joined
Aug 19, 2021
Posts
141
Reaction score
317
Location
California
First Name
Jim
Truck Year
1983
Truck Model
C30
Engine Size
454
Don't know the tech looked at it, sighed and then proceeded to hook it up. So,,, no info or pic of an 83 CA emission sticker?
 

DoubleDingo

Full Access Member
Joined
Jul 3, 2012
Posts
10,180
Reaction score
14,486
Location
Right where I am
First Name
Bagoomba
Truck Year
1981, 1965
Truck Model
81-C20 Silverado Camper Special-TH400-4.10s; 65-C20 with 4:57 gears and Borg Warner Overdrive
Engine Size
Carb'ed Vortec 350; 1972 L48 350
Thanks, I like it a lot. The emission label is missing, I was hoping someone here would know what an 83 needs. I have the original sticker showing options but no other info.

It varies. In 1981 there was something like 8 different setups from what I was told by the guy at the smog shop I go to. Have you checked out the Library to see if there is maybe a sticker there that may match your setup?
 

DoubleDingo

Full Access Member
Joined
Jul 3, 2012
Posts
10,180
Reaction score
14,486
Location
Right where I am
First Name
Bagoomba
Truck Year
1981, 1965
Truck Model
81-C20 Silverado Camper Special-TH400-4.10s; 65-C20 with 4:57 gears and Borg Warner Overdrive
Engine Size
Carb'ed Vortec 350; 1972 L48 350

Latest posts

Forum statistics

Threads
42,127
Posts
909,722
Members
33,620
Latest member
JoshuOne
Top