304 V8 question
I understand that in 79 is when they added smog controls to the 304 in CJ's
and in 80 even more so. How can a non-engine-expert like me tell the difference visually between 78, 79, and 80 304's? What exactly did they add/remove/change? And if there is no easy way to tell, what is the hard way? Any diagrams around? What do these "smog controls" look like? -- "What we need are a couple of good hangings" - FTC Chairman Orson Swindle, regarding email spam |
Re: 304 V8 question
Hi Jay,
When AMC introduced the 304" in '72 it was loaded with everything, air pump and exhaust injection, intake fresh air gulp valve, exhaust recycling valve, retarded spark, low duration retarded cam, and teeny carburetor, and by '75 it had the catalytic convert. Unless you know someone that'll SMOG a lawn mower, I'd pass. But if your glutton for punishment I'll walk you through it. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ Jay Stuler wrote: > > I understand that in 79 is when they added smog controls to the 304 in CJ's > and in 80 even more so. How can a non-engine-expert like me tell the > difference visually between 78, 79, and 80 304's? What exactly did they > add/remove/change? And if there is no easy way to tell, what is the hard > way? Any diagrams around? What do these "smog controls" look like? > > -- > "What we need are a couple of good hangings" - FTC Chairman Orson Swindle, > regarding email spam |
Re: 304 V8 question
Hi Jay,
When AMC introduced the 304" in '72 it was loaded with everything, air pump and exhaust injection, intake fresh air gulp valve, exhaust recycling valve, retarded spark, low duration retarded cam, and teeny carburetor, and by '75 it had the catalytic convert. Unless you know someone that'll SMOG a lawn mower, I'd pass. But if your glutton for punishment I'll walk you through it. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ Jay Stuler wrote: > > I understand that in 79 is when they added smog controls to the 304 in CJ's > and in 80 even more so. How can a non-engine-expert like me tell the > difference visually between 78, 79, and 80 304's? What exactly did they > add/remove/change? And if there is no easy way to tell, what is the hard > way? Any diagrams around? What do these "smog controls" look like? > > -- > "What we need are a couple of good hangings" - FTC Chairman Orson Swindle, > regarding email spam |
Re: 304 V8 question
Hi Jay,
When AMC introduced the 304" in '72 it was loaded with everything, air pump and exhaust injection, intake fresh air gulp valve, exhaust recycling valve, retarded spark, low duration retarded cam, and teeny carburetor, and by '75 it had the catalytic convert. Unless you know someone that'll SMOG a lawn mower, I'd pass. But if your glutton for punishment I'll walk you through it. God Bless America, ßill O|||||||O mailto:-------------------- http://www.----------.com/ Jay Stuler wrote: > > I understand that in 79 is when they added smog controls to the 304 in CJ's > and in 80 even more so. How can a non-engine-expert like me tell the > difference visually between 78, 79, and 80 304's? What exactly did they > add/remove/change? And if there is no easy way to tell, what is the hard > way? Any diagrams around? What do these "smog controls" look like? > > -- > "What we need are a couple of good hangings" - FTC Chairman Orson Swindle, > regarding email spam |
Re: 304 V8 question
"L.W. (ßill) ------ III" <----------@cox.net> wrote in message news:3FA9EF74.C4E3C14F@cox.net... > > Jay Stuler wrote: > > > > I understand that in 79 is when they added smog controls to the 304 in CJ's > > and in 80 even more so. How can a non-engine-expert like me tell the > > difference visually between 78, 79, and 80 304's? What exactly did they > > add/remove/change? And if there is no easy way to tell, what is the hard > > way? Any diagrams around? What do these "smog controls" look like? > > > Hi Jay, > When AMC introduced the 304" in '72 it was loaded with everything, > air pump and exhaust injection, intake fresh air gulp valve, exhaust > recycling valve, retarded spark, low duration retarded cam, and teeny > carburetor, and by '75 it had the catalytic convert. Unless you know > someone that'll SMOG a lawn mower, I'd pass. But if your glutton for > punishment I'll walk you through it. > God Bless America, ßill O|||||||O > mailto:-------------------- http://www.----------.com/ If it's complicated then I don't need to know all the details, but I just wondered the easiest way I can tell the difference between years just by looking. Of course anyone can add/remove a catalytic converter but I'm assuming there are some more notable characteristics to the different years of the engine. |
Re: 304 V8 question
"L.W. (ßill) ------ III" <----------@cox.net> wrote in message news:3FA9EF74.C4E3C14F@cox.net... > > Jay Stuler wrote: > > > > I understand that in 79 is when they added smog controls to the 304 in CJ's > > and in 80 even more so. How can a non-engine-expert like me tell the > > difference visually between 78, 79, and 80 304's? What exactly did they > > add/remove/change? And if there is no easy way to tell, what is the hard > > way? Any diagrams around? What do these "smog controls" look like? > > > Hi Jay, > When AMC introduced the 304" in '72 it was loaded with everything, > air pump and exhaust injection, intake fresh air gulp valve, exhaust > recycling valve, retarded spark, low duration retarded cam, and teeny > carburetor, and by '75 it had the catalytic convert. Unless you know > someone that'll SMOG a lawn mower, I'd pass. But if your glutton for > punishment I'll walk you through it. > God Bless America, ßill O|||||||O > mailto:-------------------- http://www.----------.com/ If it's complicated then I don't need to know all the details, but I just wondered the easiest way I can tell the difference between years just by looking. Of course anyone can add/remove a catalytic converter but I'm assuming there are some more notable characteristics to the different years of the engine. |
Re: 304 V8 question
"L.W. (ßill) ------ III" <----------@cox.net> wrote in message news:3FA9EF74.C4E3C14F@cox.net... > > Jay Stuler wrote: > > > > I understand that in 79 is when they added smog controls to the 304 in CJ's > > and in 80 even more so. How can a non-engine-expert like me tell the > > difference visually between 78, 79, and 80 304's? What exactly did they > > add/remove/change? And if there is no easy way to tell, what is the hard > > way? Any diagrams around? What do these "smog controls" look like? > > > Hi Jay, > When AMC introduced the 304" in '72 it was loaded with everything, > air pump and exhaust injection, intake fresh air gulp valve, exhaust > recycling valve, retarded spark, low duration retarded cam, and teeny > carburetor, and by '75 it had the catalytic convert. Unless you know > someone that'll SMOG a lawn mower, I'd pass. But if your glutton for > punishment I'll walk you through it. > God Bless America, ßill O|||||||O > mailto:-------------------- http://www.----------.com/ If it's complicated then I don't need to know all the details, but I just wondered the easiest way I can tell the difference between years just by looking. Of course anyone can add/remove a catalytic converter but I'm assuming there are some more notable characteristics to the different years of the engine. |
Re: 304 V8 question
Hi Jay,
Not really, they all look alike. ;-) Really, about the only we can tell if it still the twenty five year old 304' is to crawl under and look at the case numbers near the motor mount to see if the usual 360 or 401 cubic inch wasn't dropped in. Usually these SMOG parts mysteriously disappear along the way: http://www.----------.com/72CJsmog.jpg God Bless America, ßill O|||||||O mailto:-------------------- Jay Stuler wrote: > > If it's complicated then I don't need to know all the details, but I just > wondered the easiest way I can tell the difference between years just by > looking. Of course anyone can add/remove a catalytic converter but I'm > assuming there are some more notable characteristics to the different years > of the engine. |
Re: 304 V8 question
Hi Jay,
Not really, they all look alike. ;-) Really, about the only we can tell if it still the twenty five year old 304' is to crawl under and look at the case numbers near the motor mount to see if the usual 360 or 401 cubic inch wasn't dropped in. Usually these SMOG parts mysteriously disappear along the way: http://www.----------.com/72CJsmog.jpg God Bless America, ßill O|||||||O mailto:-------------------- Jay Stuler wrote: > > If it's complicated then I don't need to know all the details, but I just > wondered the easiest way I can tell the difference between years just by > looking. Of course anyone can add/remove a catalytic converter but I'm > assuming there are some more notable characteristics to the different years > of the engine. |
Re: 304 V8 question
Hi Jay,
Not really, they all look alike. ;-) Really, about the only we can tell if it still the twenty five year old 304' is to crawl under and look at the case numbers near the motor mount to see if the usual 360 or 401 cubic inch wasn't dropped in. Usually these SMOG parts mysteriously disappear along the way: http://www.----------.com/72CJsmog.jpg God Bless America, ßill O|||||||O mailto:-------------------- Jay Stuler wrote: > > If it's complicated then I don't need to know all the details, but I just > wondered the easiest way I can tell the difference between years just by > looking. Of course anyone can add/remove a catalytic converter but I'm > assuming there are some more notable characteristics to the different years > of the engine. |
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