I decided to buy a dart iron eagle block for my 84lx twin turbo project instead of using the stock 351w i have already. My 95s is in need of a new motor since my old one cracked under the strain of 596rwhp a few years ago. I understand everything that is needed to do the 351w swap into my 95gt but was wondering how much more emissions the 351w makes compared to the 302w? The 351w was just rebuilt and is stock. With all brand new emissions equipment(AIRD,AIRB,EGR ect) and 4 brand new 3-way cayts do you guys think it'll have any problems meeting 302 emissions standards? Any help or advice would be greatly appreciated
351w swap will it pass emissions?????
- Thread starter ryan7662
- Start date
Nobody knows about the 351w swap and if it'd pass 302 emissions standards? Emissions system has been completely replaced and the 351w was bored .030 over and fully rebuilt. Kinda wondering cause if it would pass easily I'd wanna put in a scat 9000 383 crank, scat forged i beams, forged kb pistons, victor jr. 210ccs and a 76mm turbo. Anybody
With all the factory emission control devices it should pass just fine. If it doesn't, dump about a quart of ether alcohol in the tank, and it will pass.
Kurt
Kurt
Wait isn't that just starting fluid, would that really be wise to dump in my tank? Wonder if guranteed to pass would actually have any effect or is just a sales gimmick. Probably wouldn't need any of that stuff now that I think about it some more. I will be running twin magnaflow heavy metal cayts(the ones that are more exp. and have extra heavy/precious metals in them) and then two magnaflow 3-ways with the air tube. I think that'll be enough since the cayts and emissions equipment will be brand new. The engine is was just rebuilt so its not like its worn out or anything. If it fails I'll just toss on two more converters. Hoping it passes with flying colors so I'd know if I could stroke it to a 383 and still be able to pass with maybe just adding a extra set of cayts if I do stroke it. All these cayts will be coming off after the test anyways so I don't need to worry about them affecting performance or anything.
94-302-vert
Active Member
Most of that stuff is just denatured alcohol anyway. You can throw injector cleaner, heat, or whatever in there, it's going to have the same effect.
Kurt
Kurt
Black95GTS
Active Member
If you put an engine block older then the model year of the car, IE you put a '69 block into a '95, you'll also fail, emissions be damned. Don't know how strict your emissions is where you are, but if they pop the hood and see a carburetor under there, you're toast.
Adam
Adam
Very few places are that assinine. Only like California, and I guess Massachusetts. I don't know what you are worrying about, Massachusetts doesn't even have state inspection.
Kurt
xr8d302
I bought a 27" monitor to compensate for my lack o
Do you guys have a "hot rod" clause where you are? I know, myself, putting an engine into a car that wasn't offered as a factory option can bypass the strict emissions testing in Ontario.
Maybe look into that?
Maybe look into that?
Most places in the states have very lax emissions testing. A lot of places have no inspection whatsoever.
Kurt
xr8d302
I bought a 27" monitor to compensate for my lack o
Yes ... Geting a sticker for emissions can be way more than just burning clean when they test it 
In some areas, you can fail with just a visual inspection cause the guy sees
something that goes against their standards
I can say from experience that if you have pcm access, you can make
adjustments which allow a Stang with a bunch of hot rod parts to burn
clean enough to pass without using any of the cheater options like gtp,
alcohol, etc
Grady
In some areas, you can fail with just a visual inspection cause the guy sees
something that goes against their standards
I can say from experience that if you have pcm access, you can make
adjustments which allow a Stang with a bunch of hot rod parts to burn
clean enough to pass without using any of the cheater options like gtp,
alcohol, etc
Grady
Black95GTS
Active Member
Last time I was in Massachusetts it was private inspection. We used to have State inspection in Florida where you had to go to an actual state emissions facility and wait in line for 2 hours. With private inspection you just have to find a shop that is cool and not going to look around too much and give you a sticker. State inspectors don't let anything slide, and check everything.
Kurt
reddy351
10 Year Member
Engine displacement has almost nothing to do with emissions levels. It has more to do with the engine's efficiency, cam timing events, cylinder head design, exhaust devices, etc.
Most Ford enthusiasts can't tell the difference between a 351w and a 302w. I'd bet money that half of the guys on this site could not. (Certainly not just by popping the hood.) So, my guess is that some flunkie at a state operated emissions station wouldn't 1) care enough to double check or 2) know the difference in the first place. It's certainly not easy to check the block's build date that is cast-in, without pulling the starter.
Running a carb on a 1995 would most likely not pass, but I think your odds would STILL be good, as long as you passed the sniffer.
Most Ford enthusiasts can't tell the difference between a 351w and a 302w. I'd bet money that half of the guys on this site could not. (Certainly not just by popping the hood.) So, my guess is that some flunkie at a state operated emissions station wouldn't 1) care enough to double check or 2) know the difference in the first place. It's certainly not easy to check the block's build date that is cast-in, without pulling the starter.
Running a carb on a 1995 would most likely not pass, but I think your odds would STILL be good, as long as you passed the sniffer.
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