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Click on image for the lowdown. 
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| | | Forums66 Topics128,136 Posts1,056,426 Members48,441 | | 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: Sep 2003 Posts: 2,384 Shop Shark | | Shop Shark Joined: Sep 2003 Posts: 2,384 | The power master has a differentt pushrod setup than the original booster-it is more flush fitting whereas the OE booster requires a longer pushrod. I'm sure it was due to many power boosters that were added at the dealer level-they used the same master 63-66 for power or manual. Brian | | |
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