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GMC chassis 1983 motorhome

Tiny
STEVEBPORTER1961
  • MEMBER
  • 1983 CHEVROLET
Does anyone have vacuum and smog charts and requirements for smog on the 454 motor on this unit. I got it and it looks like the motor has been chaged and I need to add a few items to try to smo. I believe it has to have the same smog as a commercial vehicle( I can't fing any diagrams) and when smogged they use the 2 speed idle test on the ground to test. Help.
thanks steve
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Friday, February 16th, 2007 AT 6:49 AM

2 Replies

Tiny
2CARPRO JACK
  • MECHANIC
  • 11,533 POSTS
Steve. Go to the Tech Manuals link at the bottom of the main forum page, It will have all diagrams you need. Go to local smog shop see if they will tell you all that is req'd for your m/h
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Friday, March 2nd, 2007 AT 2:19 PM
Tiny
STEVEBPORTER1961
  • MEMBER
  • 2 POSTS
I only see manuals for trucks or cars no commerical heavy duty chassis. Do you know where they might be? I believe heavy vehicle have different smog then truck or cars
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Saturday, March 3rd, 2007 AT 1:57 AM

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