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03-21-2003, 11:17 PM
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#1 |
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Seņor Member
Join Date: May 2002
Location: Edge of the world
Posts: 5,367
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small brake booster
Small brake booster...
 like this one being hawked by GMCPauls--Is there any loss in performance over the bigger booster? If no, then why do/did they make the larger one?? Is this a 100% bolt-on? Do I have to steal any parts of my existing booster? Like the push rod or??? I may need a brake booster after all, and if I'm replacing, I'd sure like to go with as small as possible. Anyone used this one?? Kenneth
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03-21-2003, 11:50 PM
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Registered User
Join Date: Dec 1999
Location: Austin, TX, USA
Posts: 7,715
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The large booster is cheaper for OEM to make. The small boosters are usually dual diaphragm. This keeps the overall diamphragm surface area the same but reduces the case diameter, but increases its thickness.
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44 Willys MB 52 M38A1 64 Corvette Coupe 68 Camaro 'vert LT1 & TH700 69 Z/28 355 12.6's @110 69 Chevy Short Step 4 1/2"/7" drop 72 Jimmy 4WD 4spd 4" & 35's 02 GMC 2500HD 4x4 Duramax |
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03-22-2003, 01:05 AM
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its all about the +6 inches
Join Date: Jan 2001
Location: Hilliard Ohio
Posts: 2,693
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The big ones in the 3/4 and one ton trucks were dual diaphragm too.
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03-22-2003, 02:36 AM
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Registered User
Join Date: Sep 2001
Location: Hacienda Heights, California USA
Posts: 474
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I just installed a smaller booster, along with a new proportioning valve and master cylinder. I deleted the linkage from the stock booster. The new rod goes straight from the brake pedal to the booster. As soon as I can bleed the brake system, I can let you know how it works. Been working too many hours to work on the truck and with gas at $2.15 for the cheap stuff, I won't be driving the truck much.
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'72 GMC custom camper 350/350 |
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03-28-2003, 01:38 PM
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Seņor Member
Join Date: May 2002
Location: Edge of the world
Posts: 5,367
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Quote:
Thanks again, Kenneth
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03-29-2003, 09:35 PM
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#6 |
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Registered User
Join Date: Sep 2001
Location: Hacienda Heights, California USA
Posts: 474
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The shop I purchased my booster from, fabricated some brackets for the smaller booster. It is now closer to the firewall. Since I plan on installing a big block, I need the room.
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'72 GMC custom camper 350/350 |
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04-05-2003, 01:06 AM
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#7 |
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Registered User
Join Date: Aug 2002
Location: baldwin park ca.
Posts: 24
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hey Spinning wheel, I'm interested in your M/C booster set-up and weather it works or not, cause I need to change out mine too. Anyway since I'm just down the road from you it would be easy for me to pop over and have a look. let me know.
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04-06-2003, 12:47 AM
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#8 |
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Registered User
Join Date: Sep 2001
Location: Hacienda Heights, California USA
Posts: 474
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bigratfan, you got a pm.
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'72 GMC custom camper 350/350 |
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04-06-2003, 12:59 AM
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#9 | |
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Seņor Member
Join Date: May 2002
Location: Edge of the world
Posts: 5,367
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Quote:
Kenneth
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04-06-2003, 09:11 AM
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#10 |
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Account Suspended
Join Date: Mar 2003
Location: ** THE FALL GUY **CHICAGO IL
Posts: 5,883
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small booster
that small booster works good for hi-pro deals like mine bb needing to pull off valve covers and such also had to buy a vacuum pump from mpbrakeshttp://www.mpbrakes.com/index.htm
check that out for vac.pump if you need one ......mp sells that small boosterfor about $400.00 i bought mine from some little place in penn.for only $225.00 they have no web site...so shop around....if you really e want to know where i got mine..send me a P.M. and i will look for the ticket from there.....on my truck i just ground off the stock rivits on the old booster and it fit right on the new smaller booster....the rod i cut off the stock booster ...drilled and tapped it out and screwed it right on the new booster  now thats a tall block with tall valve covers and still have 21/2" of clearence......mark
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