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Old 10-07-2012, 01:37 PM
old farmer old farmer is offline
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302 EGR connection

It looks like I'm going to have to put EGR and a vapor canister on my 47 truck.
The smog police are now charging people for lack of equipment, based on the casting number on the block. Since mine starts with D4, it's a 74.
Two questions,
Can anyone tell me what the vacuum hose routing for the EGR system is, and also the vapor canister?
Also, I have the EGR plate but my manifold is from the 60's so it doesn't have the port in the carb flange for the plate. Would it be possible to drill a hole in the flange so the plate can get exhaust gas to make the EGR work?
Thanks.
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Old 10-07-2012, 06:55 PM
Beanscoot Beanscoot is offline
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EGR

For emissions routing, I would look for a 1974 shop manual. But perhaps you could use the casting number off of the intake manifold to date the engine. After all, it is extremely difficult to see the block casting number on an installed engine, so the emissions inspector might be willing to accept the intake manifold casting number.
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Old 10-08-2012, 11:21 AM
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Quote:
Originally Posted by old farmer View Post
Also, I have the EGR plate but my manifold is from the 60's so it doesn't have the port in the carb flange for the plate. Would it be possible to drill a hole in the flange so the plate can get exhaust gas to make the EGR work?
If your intake doesn't have the EGR flange it's also doesn't have the internal EGR port down to the heads so you're probably SOL here without changing the intake. But the EGR valve doesn't need exhaust gas to work it just needs engine vacuum, so if you can mount it where it should be and connect vacuum nobody will be the wiser.
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Old 10-08-2012, 11:21 AM
 
 
 
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