WHEELMAN
Full Access Member
- Joined
- Aug 9, 2011
- Posts
- 136
- Reaction score
- 11
- Location
- HICKORY TAVERN SC
- First Name
- BILL
- Truck Year
- 1986
- Truck Model
- C10
- Engine Size
- 454 v8
Cats are federal.you got to have them.but mufflers are not required.
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.
For what it's worth... Even if you live in a state where your vehicle is subject to emissions inspection, if your truck didn't originally come equipped with cats, you won't be required to add aftermarket units to your truck. For example, my 86 k20 never came with cats from the factory, but I can still smog it in California (where it's registered) with no problem. Sometimes if I go to a different emissions testing station, they look at it funny until they read the emissions decal and see that cats weren't installed from the factory.
I thought cats were mandated by the fed gubmint back in 1975.
The main thing to look for is weather or not the truck had HD emissions. My '85 has always been a CA truck. Due to the fact it was over 8600 GVW, it does not have cats and originally ran on regular fuel. I had an '80 3+3 and an '85 C20. All 3 trucks had 454 and fit this criteria. Although they don't have cats, the underside of the hood has a "mess" of emission hoses.
Pa does go by county population... where i live they do emissions but the county my mom lives in they dont do emissionsThats pretty cool because it changes with the times. In PA its 1974 or older. Now if you do a classic registration (at least 15 years old) you no longer need an emissions sticker (if you live in an emissions testing region). Antique registration (25 years or older) is exempt from emissions and safety inspections.
The laws in PA are crazy because the county north of me doesnt require emissions but mine does and I live about 10 minutes from the county line lol. I guess pollution stops on top of the mountain.
Pa does go by county population... where i live they do emissions but the county my mom lives in they dont do emissions