GMCforum: GMCnet » vacuum reading on 455

Home » Public Forums » GMCnet » vacuum reading on 455 (Main vaccuum port and vac advance for distributor)

Show: Today's Messages :: Polls :: Message Navigator

vacuum reading on 455 [message #255137]

Sat, 12 July 2014 06:33

budworks521

Messages: 137
Registered: October 2013
Location: Grand Rapids MI 1974 Pain...

Karma:

Senior Member

I cannot find in the manual the proper readings for the vac lines. Any ideas on what is acceptable for an engine with 135k and a little upper half work? If the air cleaner is off should I block off the one in back that goes to the air cleaner housing? I heard 15 lbs steady for the main port and once I get to a certain rpm on the motor what should the vac advance read? Thanks in advance gentlemen. Another compression test today as well.

1974 Painted Desert 455 upper half rebuild constant project inexperienced mechanic Grand Rapids Mi Always trying to learn

Report message to a moderator

[Message index]

		vacuum reading on 455 By: budworks521 on Sat, 12 July 2014 06:33
		Re: vacuum reading on 455 By: Bob de Kruyff on Sat, 12 July 2014 13:25
		Re: vacuum reading on 455 By: budworks521 on Sat, 12 July 2014 15:38
		Re: [GMCnet] vacuum reading on 455 By: Bruce Hart on Sat, 26 July 2014 16:42
		Re: vacuum reading on 455 By: budworks521 on Sun, 27 July 2014 07:00
		Re: [GMCnet] vacuum reading on 455 By: James Hupy on Sun, 27 July 2014 09:40
		Re: vacuum reading on 455 By: budworks521 on Sun, 27 July 2014 17:26

Previous Topic:	[GMCnet] GMC for sale in Bellingham, WA
Next Topic:	Repair Report #1 - Unsafe Jack Hook

Goto Forum:

-=] Back to Top [=-

Current Time: Sat Oct 05 17:51:03 CDT 2024

Total time taken to generate the page: 0.00708 seconds