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Click on image for the lowdown. 
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7 members (Hanks custodian, 2-Ton, TUTS 59, Otto Skorzeny, festerhairball, HandyAndy, dt235sd),
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Global Mod,
Mod | | | Forums66 Topics128,060 Posts1,055,836 Members48,427 | | Most Online14,466
Apr 26th, 2026 | | AD Chevy Trucks  Over 6,000 pictures Brad Allen has an awesome collection of Chevrolet factory pictures that he has set up from film strips. Check them out!
Lots of work on Brad's part ... pure enjoyment (and references) for you!
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For helping keep this great
old truck web site
on the Internet for over 30 years! and not clogged down
with Ads!  Again, thanks!
| | | | Joined: Aug 2006 Posts: 486 'Bolter | | 'Bolter Joined: Aug 2006 Posts: 486 | When I purchased this 292 there was no hose connected to the vacuum line on the distributor. There is a threaded hole at the base of the carb. I plugged it to keep bugs out. [IMG]http://i305.photobucket.com/albums/nn214/jfnar/68%20GMC/IMG_02001_zpsqiavozsr.jpg[/IMG]Is this the correct location to connect a vacuum line for the distributor? If not, what is it for and where is the correct place to get the distributor vacuum? Thanks. Jeff
'64 swb stepside (gone)
'57 1 ton
'53 phone truck
'59 swb
'46 1 1/2 ton
'68 swb gmc
| | | | | Joined: Dec 2008 Posts: 1,922 'Bolter | | 'Bolter Joined: Dec 2008 Posts: 1,922 | Take a look - is the inner end of that hole above or below the throttle disc when the throttle is at curb idle? | | | | | Joined: Mar 2010 Posts: 10,274 Renaissance Man | | Renaissance Man Joined: Mar 2010 Posts: 10,274 | Take that plug out (to let the bugs out  ). That's the one for the vacuum advance.
1952 5-window - return to "as built" condition | 1950 3100 with a 235 and a T-5 transmission
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