Yes, I'm running Patrick's 3.55. I had Ficken redo the vacuum motor so I don't suspect that at all (they made a rough motor look and operate brand new). I'm just surprised the little F head in my Willys does such a better job with the vacuum wipers. I made the comment about the vacuum hoses because there's a lot of them! Thanks for all the comments. It will give me something to look at when I get the pickup out in spring...
Allen '50 3100 -----Original Message----- From: old-chevy-truck@yahoogroups.com [mailto:[EMAIL PROTECTED] On Behalf Of Mike & Inez Plucker Sent: Monday, September 24, 2007 12:34 PM To: old-chevy-truck@yahoogroups.com Subject: Re: [old-chevy-truck] Vacuum Wiper Fun Allen you run 65 to 70 up Snoqualmie, I bet you got a higher diff ratio? I am amazed that you get wipers, I used to go up and down Mary Hill, from the Columbia River to Goldendale Loved going down hill in rain, but up hill was a different matter. Some times had to take foot out and let wipers work, made my passengers nervous. Even though they liked riding in my old truck. I finally put a check valve in vacuum line and a vacuum reservoir this helped but it was not big enough to hold a lot of negative pressure. I also took wiper motor apart and lubricated it before all this that helped a lot. Of course I was running a 216 4 speed, seems that the faster I went the less vacuum I had, which makes sense, pulling a hill the throttle is open with heavy load and low vacuum, so wipers are slow. Mike Bruce, I run the double action pump on my 261. I had it professionally overhauled before installing. It helps, but not as much I would have hoped (I have a '55 M38A1 with vacuum wipers and the double action pump works well!). For example, if I'm heading up a mtn pass (Snoqualmie Pass in the Cascade Mountains is one), and maintain 65 or 70 mph, the wipers still work, but barely. One time I was in a good rain storm and would periodically have to get off the pedal so the wipers would slap back and forth so I could I see. You would think turning 2700 rpms would generate the necessary vacuum with a double do. I plugged it off to see if it really helped, and it does, but not much. . [Non-text portions of this message have been removed] Ole Chevy and GMC trucks rule! To unsubscribe, send an email (with no subject, no body, just the email), to: [EMAIL PROTECTED] Yahoo! Groups Links Ole Chevy and GMC trucks rule! To unsubscribe, send an email (with no subject, no body, just the email), to: [EMAIL PROTECTED] Yahoo! Groups Links <*> To visit your group on the web, go to: http://groups.yahoo.com/group/old-chevy-truck/ <*> Your email settings: Individual Email | Traditional <*> To change settings online go to: http://groups.yahoo.com/group/old-chevy-truck/join (Yahoo! ID required) <*> To change settings via email: mailto:[EMAIL PROTECTED] mailto:[EMAIL PROTECTED] <*> To unsubscribe from this group, send an email to: [EMAIL PROTECTED] <*> Your use of Yahoo! Groups is subject to: http://docs.yahoo.com/info/terms/
