Re: Vacumn pump.
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Re: Vacumn pump.



By the way , what characteristics  would a  cam with .475 lift on intake and exhaust, with a long duration have?  I am going to guess a torque cam? ...................................MO

On Friday, April 28, 2017 at 1:08:01 PM UTC-5, MO wrote:
I am not much up on cam specs and what they mean as far as degrees.  So, I assume a cam could have a comparitivly long duration without all that much lift? . My cam measures approx .475 lift on intake and exhaust  and looks like quite a bit of duration.  Could that be why I have very little vacume  on a gauge?  I know I don't have any leaks.....................................MO

On Friday, April 28, 2017 at 12:04:55 AM UTC-5, glpav...@xxxxxxx wrote:
MO,
 
Any long duration camshaft, regardless of vehicle brand, will yield a low vacuum signal and require a vacuum pump booster to operate a power brake system; ie. 284 adv. duration 2...@.050”...
 
Gary Pavlovich
 
From: MO
Sent: Thursday, April 27, 2017 9:54 PM
Subject: Vacumn pump.
 
I had heard that some cams cause power brake cars problems.  A friend started up his El Camino, and  I thought from the clicking sound it made, that he had an electric fuel pump.  No, he said he had to put on a vacume pump  for his brakes to work right.  I had never seen one before.  Is this common among Mopar engines with certain cams?...............................MO
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Please address private email -- email of interest to only one person -- directly to that person. That is, email your parts/car transactions and negotiations, as well as other personal messages, only to the intended recipient. Do not just press "reply" and send your email to everyone using the general '62-'65 Clubhouse public email address. This practice will protect your privacy, reduce the total volume of mail and fine-tune the content signal to Mopar topic. Thanks!
 
1962 to 1965 Mopar Clubhouse Discussion Guidelines:
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