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#1 |
Registered User
Join Date: Jul 2001
Location: North Louisiana
Posts: 4,501
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70 vs. 71 brake booster difference?
I see that they have different part numbers. Does anyone know the difference? I'm switching my '70 power drum/drum to 71 style disc/drum. Can I simply change the master cylinder & prop valve, or do I need to change to the '71 style booster too?
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Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com |
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#2 |
sharp as a marble
![]() Join Date: Jan 2007
Location: atlantic beach,florida
Posts: 1,082
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Re: 70 vs. 71 brake booster difference?
I think Chevy used two different suppliers back in the day. If you can look it up on NAPA's site and see a picture you will see the difference in the two styles of booster. They also use a different master cylinder for each. Hope this helps
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#3 |
Retired Air Force Veteran
![]() Join Date: Aug 2007
Location: Pembroke Pines, Florida 33024
Posts: 1,808
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Re: 70 vs. 71 brake booster difference?
Wynne,
Brake Booster from your 70' will work if your gonna change to the 71'-72' disks. I have a 69' and I'm using the brake booster from it for the 71'-72' disk conversion (just did this conversion last weekend). I of course needed to change master cylinders and now use the proportional valve. Drum brakes use a smaller resiviour (sp) master cylinder and a distribution block. Note: brake line sizes are different also
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Harry 69' SWB Step Side 1/2 Ton w/68' Front Clip Swap from Leafs to Trailing Arms (Complete) Swap 6 Lug to 5 Lug (w/ Disk Brakes in Front) 3/6 Drop ![]() Help Support The Board Click Here For Information On How To Subscribe Krue's FAQ Page Vendors Last edited by myoldchevytruck; 12-22-2008 at 02:03 AM. |
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#4 |
Registered User
Join Date: Jul 2001
Location: North Louisiana
Posts: 4,501
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Re: 70 vs. 71 brake booster difference?
Thanks!
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Wynne 70 CST short fleet Hugger orange & white, 350/350, ps, pb, air, tilt, tach/vac/speedwarning, original buckets, AM/FM, oak bed floor, shoulder belts, 3.5"/5.5" drop, 20" American Racing VN425s. Build thread 53 Chevy shortbed 69 Camaro Click here to subscribe Chevy GMC International Truck Club Louisiana Charter Member http://www.louisianaclassictruckclub.com |
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