| |
Click on image for the lowdown. 
====
| | | Forums66 Topics128,035 Posts1,055,443 Members48,422 | | 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!
| | THANKS!
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: Jul 2020 Posts: 51 'Bolter | | 'Bolter Joined: Jul 2020 Posts: 51 | I installed a new vacuum advance on my 54 235 truck engine .Prior to removing dist, made reference marks as to position of rotor,postion of dist itself, and postion of dist body when i removed the old vacuum advance. The problem that I have is installing the dist. It will drop down so far,but not flush with the block. The rotor feels tight and lines up pretty close as to where it was when removed. Did I do something wrong,or maybe the wrong vacuum advance? Any and all advise is welcome. Thank you | | | | | Joined: Nov 2020 Posts: 71 'Bolter | | 'Bolter Joined: Nov 2020 Posts: 71 | You need to use a long flat blade screwdriver to line the oil pump up. | | | | | Joined: Feb 2019 Posts: 4,472 AD Addict & Tinkerer | | AD Addict & Tinkerer Joined: Feb 2019 Posts: 4,472 | As you drop the distributor, the oil pump tang (and rotor) will turn as the distributor drive gear meshes with the cam shaft gear. You will have to turn the rotor slightly to compensate or the tang will not engage in the oil pump, preventing it from dropping fully.
What I do, in addition to marking the distributor as you did, is to place one additional mark (rotor to distributor) as your pulling out the distributor, just after the drive gear clears the cam gear, so you know where to set the rotor (how much compensation) so tang engages the oil pump.
Last edited by Phak1; 03/28/2021 12:19 PM.
Phil Moderator, The Engine Shop, Interiors and Project Journals1952 Chevrolet 3100, Three on the Tree, 4:11 torque tube Updated to: ‘59 235 w/hydraulic lifters, 12v w/alternator, HEI, PCV and Power front Disc BrakesProject JournalsStovebolt Gallery Forum | | | | | Joined: Jul 2020 Posts: 51 'Bolter | | 'Bolter Joined: Jul 2020 Posts: 51 | Thank you for the replies. Got it installed and as luck would have it-----was able to start engine on first try. | | |
|
|
| |
