When did C30's get cats? - The 1947 - Present Chevrolet & GMC Truck Message Board Network

Ziegelsteinfaust · 04-26-2015, 04:17 PM

I have to sell my K20 down the road because I need something family friendly. So I am working on picking up a crew cab dually. Since I can not stomach buying a new truck I will build my version with out things that annoy me.

When did cats become a requirement on a California truck. I saw a ad where it was mentioned 1984 last year of no cats.

I am looking at earlier the 80 to keep smog issues down, or get a TBI version then go for LS swap.

There is a kid at work who wants it bad since the running gear is new, and I can not pass up his offer. So I want to act quickly.
Posted via Mobile Device

**Joesjunk** · 04-26-2015, 05:22 PM

[QUOTE=Ziegelsteinfaust;7149286]I have to sell my K20 down the road because I need something family friendly. So I am working on picking up a crew cab dually. Since I can not stomach buying a new truck I will build my version with out things that annoy me.

When did cats become a requirement on a California truck. I saw a ad where it was mentioned 1984 last year of no cats.

I am looking at earlier the 80 to keep smog issues down, or get a TBI version then go for LS swap.

There is a kid at work who wants it bad since the running gear is new, and I can not pass up his offer. So I want to act quickly.
Posted via Mobile Device[/QUOTE

My '87 is single exhaust with a cat and unleaded gas, and my 86 is a dual exhaust no cat and regular gas. Both are K/30's with 454's

rich weyand · 04-26-2015, 10:09 PM

Federal: cats went on the C10s in 1975 (under 6001# GVW).

State: cats went on all pickups in California in 1978.

Federal: cats went on all trucks under 8501# GVW in 1979. This was all C/K/10/20/30.

Titomars · 04-26-2015, 11:45 PM

Quote:

Originally Posted by rich weyand

Federal: cats went on the C10s in 1975 (under 6001# GVW).

State: cats went on all pickups in California in 1978.

Federal: cats went on all trucks under 8501# GVW in 1979. This was all C/K/10/20/30.

There are a few exceptions to the first one. not all 75 up C/10s had cats.
Calif. also required cats on `1975 up, under 8500 GVWs, also with a few exceptions.

I know I own one of those exceptions: 75 to 77 454 equipped C/10s did not have cats whether they were Calif or federal. 1978 was the first year for cats on California 454 C/10s. 1978 Federal 454 C/10's did not have them.

KQQL IT · 04-26-2015, 11:17 PM

We had an 86 federal c30 without cats

donut · 04-27-2015, 03:43 AM

Quote:

Originally Posted by KQQL IT

We had an 86 federal c30 without cats

Don't know when CA went to all cats. My fed '86 was no cats, leaded gas legal.

jetmech85 · 04-26-2015, 11:22 PM

'85 C-20 Crew with no factory cat. I can't remember when leaded gas was removed from the pumps. My '87 C-30 has one.

**Warrens69GMC** · 04-27-2015, 06:55 AM

I just read the 76-80 big 10 raised their GVW not to have cats on 1/2 ton trucks.

Ziegelsteinfaust · 04-27-2015, 09:05 PM

I have found the truck I want. It is a fully loaded 1984 diesel titled truck. Someone converted it to a SBC, and the guy thinks it is a 305.

Either way it is a good base for a clean up, and a slow build as money + time converge.

04-26-2015, 04:17 PM	#1
Ziegelsteinfaust Registered User Join Date: Dec 2012 Location: Temple City Posts: 3,628	When did C30's get cats? I have to sell my K20 down the road because I need something family friendly. So I am working on picking up a crew cab dually. Since I can not stomach buying a new truck I will build my version with out things that annoy me. When did cats become a requirement on a California truck. I saw a ad where it was mentioned 1984 last year of no cats. I am looking at earlier the 80 to keep smog issues down, or get a TBI version then go for LS swap. There is a kid at work who wants it bad since the running gear is new, and I can not pass up his offer. So I want to act quickly. Posted via Mobile Device

04-26-2015, 05:22 PM	#2
Joesjunk Senior Member Join Date: May 2001 Location: Independence MO. Posts: 7,705	Re: When did C30's get cats? [QUOTE=Ziegelsteinfaust;7149286]I have to sell my K20 down the road because I need something family friendly. So I am working on picking up a crew cab dually. Since I can not stomach buying a new truck I will build my version with out things that annoy me. When did cats become a requirement on a California truck. I saw a ad where it was mentioned 1984 last year of no cats. I am looking at earlier the 80 to keep smog issues down, or get a TBI version then go for LS swap. There is a kid at work who wants it bad since the running gear is new, and I can not pass up his offer. So I want to act quickly. Posted via Mobile Device[/QUOTE My '87 is single exhaust with a cat and unleaded gas, and my 86 is a dual exhaust no cat and regular gas. Both are K/30's with 454's __________________ 72 3/4t Custom Deluxe 402/auto 66k Original paint 71 3/4t 4x4 Custom Deluxe 10k original miles Original paint 71 3/4t Cheyenne 402 70k original paint 72 3/4t 4x4 Custom deluxe 72 3/4t 4x4 Custom deluxe 91k original paint 72 Cheyenne/30 Dually 69 Camaro SS396 4-speed 13 GMC 2500HD Duramax I bought new 05 Jeep Wrangler "Willys Edition" 12k miles (I bought new) 85 3/4 ton 4x4 Scottsdale 33k miles original paint 86 1 ton 4x4 SRW Silverado 454 restored 80 1 ton 4x4 SRW Silverado 9,434 original miles!! original paint 95 GMC 1 ton dually 4x4 my dad bought new 95 GMC 3/4 ton 4x4, regular cab 454, 31k original miles 2002 2500HD 4x4 regular cab 6.0L 67k miles 2002 2500HD 4x4 regular cab 8.1L 28k miles 2003 GMC 2500HD 4x4 regular cab Diesel 93k miles 67-72 Parts for sale

04-26-2015, 10:09 PM	#3
rich weyand Registered User Join Date: Apr 2014 Location: Bloomington Indiana Posts: 1,041	Re: When did C30's get cats? Federal: cats went on the C10s in 1975 (under 6001# GVW). State: cats went on all pickups in California in 1978. Federal: cats went on all trucks under 8501# GVW in 1979. This was all C/K/10/20/30. __________________ Rich Weyand 1978 K10 RCSB DD.

04-26-2015, 11:17 PM	#5
KQQL IT At the body shop. Join Date: Aug 2009 Location: Land of fruits and nuts. Posts: 5,254	Re: When did C30's get cats? We had an 86 federal c30 without cats __________________ " That didnt make it any newer " " Dont antique the equipment "

04-26-2015, 11:22 PM	#7
jetmech85 Registered User Join Date: Sep 2014 Location: Texas Posts: 215	Re: When did C30's get cats? '85 C-20 Crew with no factory cat. I can't remember when leaded gas was removed from the pumps. My '87 C-30 has one.

04-27-2015, 06:55 AM	#8
Warrens69GMC Registered User Join Date: Jan 2003 Location: Safford,AZ Posts: 3,622	Re: When did C30's get cats? I just read the 76-80 big 10 raised their GVW not to have cats on 1/2 ton trucks. __________________ 1969 307, t350 1950 Chevy Wagon 1978 Big 10 1967 C10, 250,3-OTT

04-27-2015, 09:05 PM	#9
Ziegelsteinfaust Registered User Join Date: Dec 2012 Location: Temple City Posts: 3,628	Re: When did C30's get cats? I have found the truck I want. It is a fully loaded 1984 diesel titled truck. Someone converted it to a SBC, and the guy thinks it is a 305. Either way it is a good base for a clean up, and a slow build as money + time converge.



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