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360 Timing for Emmision Testing
#1518371
10/16/13 11:51 AM
10/16/13 11:51 AM
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Joined: Jan 2003
Posts: 2,155 Tucson, Arizona
clonestocker
OP
top fuel
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OP
top fuel
Joined: Jan 2003
Posts: 2,155
Tucson, Arizona
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I'm trying to get a 300/360 Crate motor to pass emissions. I put to dist. back to vacuum advance. What should the timing be set at w/Vacuum advance disconnected at idle?
thx matt
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Re: 360 Timing for Emmision Testing
[Re: clonestocker]
#1518372
10/16/13 04:27 PM
10/16/13 04:27 PM
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Joined: Nov 2003
Posts: 36,040 Lincoln Nebraska
RapidRobert
Circle Track
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Circle Track
Joined: Nov 2003
Posts: 36,040
Lincoln Nebraska
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Maybe TDC. You want it pretty retarded which is what Ma did back in the 70's in some cases to pass emissions. Keeps the nitrogen (nitrides?) of oxides (NOX) to an acceptable level. Not sure if subbing in a tamer cam would be something you'd want to do to get it to pass or if that would even be needed but you gotta do what you gotta do. At TDC it may need a milder cam to even run somewhat. Keep searching & here's a BTT for ya
live every 24 hour block of time like it's your last day on earth
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Re: 360 Timing for Emmision Testing
[Re: clonestocker]
#1518373
10/16/13 05:45 PM
10/16/13 05:45 PM
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Joined: Jun 2003
Posts: 3,325 Truckville, the capital of NY
85_Ram_4speed
master
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master
Joined: Jun 2003
Posts: 3,325
Truckville, the capital of NY
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If that is a magnum 300hp/360 crate, I think if I remeber right that is a bone stock magnum 360 long block with a carb intake on it. So not much really tamer could you get on the cam.
As said, retard timing to 0 TDC as Ma Mopar did, and lean the crap out of it. It will run absolutly terrible, but if it gets you by, then down the road after inspection you can break out the tools and fix it for the ride home.
Outcast Dodge guy.
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Re: 360 Timing for Emmision Testing
[Re: clonestocker]
#1518374
10/16/13 05:47 PM
10/16/13 05:47 PM
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Joined: Oct 2012
Posts: 1,106 Northeast
VincentVega
super stock
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super stock
Joined: Oct 2012
Posts: 1,106
Northeast
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Changing the oil can also gives you a tiny boost to the emissions. Dirty oil WILL impact the test results.
Looking for 1975 through 1978 B body 4 door sedan sheet metal or parts cars - monaco, fury, coronet. Please let me know
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