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Old Mar 14, 2018 | 06:14 PM
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De-smog question

My 75 F100 is a Calif. truck and therefore had emission requirements however now that it is a 75 no longer needs to be smogged. My question is, can I remove all the emission crap to help with performance or is there somethings that should be left on ? Thanks in advance.
 
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Old Mar 14, 2018 | 11:25 PM
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A '75 wouldn't have much. Things to keep are the PCV system, and the EVAP. If you have working cats, keep the air injection if equipped. Or you can remove the cats and air injection. Not sure if you have EGR, but that can go.

The real issue with power and economy, such as can be had with these, is low compression and the lack of quench in the cylinders caused by sunken pistons in both the 390 and (even worse) 360.

Are you considering any rebuild or upgrades like cam, manifold, headers, pistons, stroker crank, aftermarket heads, 4 bolt main machine work, nitrous, supercharger, turbo, air cleaner lid flip, muffler removal?
 
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Old Mar 15, 2018 | 03:30 PM
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Thanks for your info. It has dual exhaust with the cat. converter removed. Looking at headers and possible 4 barrel set-up. Leaning towards 1406 Edelbrock and rpm or streetmaster manifold. Mainly daily driver with some lite towing.Has granny 4 spd,, part time 4 wheel drive, stock tires and rims.
 
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Old Mar 15, 2018 | 03:52 PM
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Originally Posted by 75 F100 4X4
Thanks for your info. It has dual exhaust with the cat. converter removed. Looking at headers and possible 4 barrel set-up. Leaning towards 1406 Edelbrock and rpm or streetmaster manifold. Mainly daily driver with some lite towing.Has granny 4 spd,, part time 4 wheel drive, stock tires and rims.
If your truck has an FE engine and T/E (Thermactor Emission-smog pump), the right & left smog manifolds can be removed from the heads, because Ford sold threaded plugs to fill the holes.

8) C6AZ-6052-A .. Plug-Use to fill Thermactor holes in the heads / 1/2" -20 x 1 11/32" long / Obsolete

1966/67 F100 352 / 1968 F100/350 360/390 / 1973/76 F100/350 360/390 // 1966/71 FE FoMoCo Passenger Cars.

CARPENTER NOS OBSOLETE PARTS in Concord NC has 1,789 = 800-476-9653.
 
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Old Mar 15, 2018 | 08:28 PM
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Originally Posted by NumberDummy
If your truck has an FE engine and T/E (Thermactor Emission-smog pump), the right & left smog manifolds can be removed from the heads, because Ford sold threaded plugs to fill the holes.

8) C6AZ-6052-A .. Plug-Use to fill Thermactor holes in the heads / 1/2" -20 x 1 11/32" long / Obsolete

1966/67 F100 352 / 1968 F100/350 360/390 / 1973/76 F100/350 360/390 // 1966/71 FE FoMoCo Passenger Cars.

CARPENTER NOS OBSOLETE PARTS in Concord NC has 1,789 = 800-476-9653.
Sorry about that, should have made it clear that it is the original 360 fe. So, would this then have the T/E smog pump? If so, where would I look to remove the smog manifolds and plug the holes? Thanks Bruce
 
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Old Mar 15, 2018 | 08:38 PM
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Originally Posted by 75 F100 4X4
Sorry about that, should have made it clear that it is the original 360 fe. So, would this then have the T/E smog pump? If so, where would I look to remove the smog manifolds and plug the holes? Thanks Bruce
Some of these trucks had T/E, some did not. The C6AZ-6052-A plugs replaced the 9B471 nuts and ferrules.

 
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Old Mar 16, 2018 | 10:46 AM
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NumberDummy, thanks for the pic, It is very helpful.
 
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Old Mar 16, 2018 | 11:55 AM
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Originally Posted by 75 F100 4X4
My 75 F100 is a Calif. truck and therefore had emission requirements however now that it is a 75 no longer needs to be smogged. My question is, can I remove all the emission crap to help with performance or is there somethings that should be left on ? Thanks in advance.
Well, although the system is simple, IMHO, I would keep all the parts handy that you remove, because as I'm sure you are aware of....

- Even though you are exempt from inspections, you are not exempt from the requirement to have them- even US Fish & Game Wardens carry a manual that identifies each vehicle and the required smog equipment, illegal engines changes, etc with pics of how to ID.

- Any law enforcement officer (including fish & game), EPA inspector, etc. can impound the vehicle and cite it as a gross polluter

- Once cited, a judge will decide if the vehicle is to be scrapped or returned to the owner- and you do not have any opportunity to speak in court- just required to sit & listen.

- If the vehicle is returned- guess what, now you have to repair and take the vehicle to a federal referee station for the rest of "its life" for a smog inspection & test.
 
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Old Mar 16, 2018 | 01:53 PM
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One never knows what Governor "Moonbeam" and etc will do with our existing smog laws. Supposedly, at one time not all that long ago, CA planned to 'back up' the years to be inspected.

'Course most of y'all are either unaware or have forgotten that in the late 1960's/early 1970's, CA smog tested all 1950 and newer vehicles, I kid you not!

PCV introduced in 1961, was mandatory in sold new in CA vehicles (other states may have/may not have mandated PCV). But since no 1950/60 came with it, PCV kits sold by auto parts stores had to be installed.

PCV kits also had to be installed in peoples vehicles that moved to CA if the vehicles didn't come with it originally.

Then there was that gawd awful NOX device that had to be spliced into the upper radiator hose. NOX kits were also sold by auto parts stores and had to be installed in every 1950 and newer vehicle thru circa 1967.
 
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Old Mar 19, 2018 | 12:13 AM
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Originally Posted by Beechkid
Well, although the system is simple, IMHO, I would keep all the parts handy that you remove, because as I'm sure you are aware of....

- Even though you are exempt from inspections, you are not exempt from the requirement to have them- even US Fish & Game Wardens carry a manual that identifies each vehicle and the required smog equipment, illegal engines changes, etc with pics of how to ID.

- Any law enforcement officer (including fish & game), EPA inspector, etc. can impound the vehicle and cite it as a gross polluter

- Once cited, a judge will decide if the vehicle is to be scrapped or returned to the owner- and you do not have any opportunity to speak in court- just required to sit & listen.

- If the vehicle is returned- guess what, now you have to repair and take the vehicle to a federal referee station for the rest of "its life" for a smog inspection & test.
Beechkid, thanks for that information. Was not aware of it.
 
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Old Apr 17, 2018 | 11:55 PM
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Originally Posted by NumberDummy
Some of these trucks had T/E, some did not. The C6AZ-6052-A plugs replaced the 9B471 nuts and ferrules.

Hey ND, when installing plugs, would you keep those ferrule looking things (9A484) or remove them as well? What about if you're just using 1/2"-20 set screws?

Also since this is already a perfectly good smog delete thread - Is there any secret to removing the EGR valve? Can I just pop it off and put a blank off plate in its place? Or do I need to replace the carb spacer with a 'non egr' spacer?
 
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Old Apr 19, 2018 | 03:50 PM
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Bill, am I correct on this, didn't some come without the smog pump here in Kali? If so, why not just replace with non-smog logs. That rymes...
 
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Old Apr 20, 2018 | 07:05 AM
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I took the thermacter system off of my 428cj for a year and then put it back on. Couldn't tell the difference in power or mpg.
 
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Old Jun 1, 2018 | 06:15 PM
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Originally Posted by Beechkid
Well, although the system is simple, IMHO, I would keep all the parts handy that you remove, because as I'm sure you are aware of....

- Even though you are exempt from inspections, you are not exempt from the requirement to have them- even US Fish & Game Wardens carry a manual that identifies each vehicle and the required smog equipment, illegal engines changes, etc with pics of how to ID.

- Any law enforcement officer (including fish & game), EPA inspector, etc. can impound the vehicle and cite it as a gross polluter

- Once cited, a judge will decide if the vehicle is to be scrapped or returned to the owner- and you do not have any opportunity to speak in court- just required to sit & listen.

- If the vehicle is returned- guess what, now you have to repair and take the vehicle to a federal referee station for the rest of "its life" for a smog inspection & test.
Where did you find this information?

As far as requiring additional equipment on vehicles that didn't have those items when new, I thought that grandfathering laws would keep you safe from the ever demanding increases of .gov regulation.
Seatbelts come to mind.
 
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Old Jun 2, 2018 | 09:50 PM
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McLeod, since you mentioned 'seatbelts', let me offer this. Back in the day, (unless you have proof) that said vehicle actually did or didn't come from the factory with seat belts, it was up to the discrestion of the officer, what the seat belt law was for that vehicle. And, you might have to go to court to prove it. It was in those years when 'new' seat belt laws were coming into effect.
It was I believe, 1972, when I was stopped and issued a ticket for no seat belts in my 1965
F-100. I told the officer that the truck never came with seat belts and told him I had the original window sticker in the glove box showing proof. He said he was NOT interested in seeing it -because he knew better.
Went to court and won my case after showing the judge the window sticker.
Now here's the kicker, I told the judge that I had always planned on putting seat belts in the truck but just never had the time. THIS is what the judge told me,,,,,,, BY LAW, once I install the seat belts, I would indeed be required to ALWAYS use them or I could be given a ticket. Interesting...
 
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