Distributor gear question
March 31st, 2018, 06:31 AM
#1
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Thread Starter
Join Date: Apr 2009
Posts: 118
Distributor gear question
Ok.I have a 455 with an erson cam. The distributor is a pertronix flamethrower with a steel gear. After some research and calling the cam company they said i needed to use the bronze gear. Ok, fine.
My question is how long until something messes up with the gears? Currently I only have maybe 100 miles on the engine. Its rebuilt and was only driven to work to work on it at the shop and was totally clueless about having to change the gears? It starts fine, runs fine and no problem getting the timing right thus far.
Also how do you adjust the distributor end play with the shims or check for clearances? Thanks
My question is how long until something messes up with the gears? Currently I only have maybe 100 miles on the engine. Its rebuilt and was only driven to work to work on it at the shop and was totally clueless about having to change the gears? It starts fine, runs fine and no problem getting the timing right thus far.
Also how do you adjust the distributor end play with the shims or check for clearances? Thanks
March 31st, 2018, 06:45 AM
#2
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Join Date: Sep 2015
Location: Chicago suburbs, Finland
Posts: 1,882
About gears, no idea, but you dont shim your distributor.
Cam pulls distributor shaft down when engine is rotating, to "rest" on the machined pad on the block, and that way sets the gear height correct.
Cam pulls distributor shaft down when engine is rotating, to "rest" on the machined pad on the block, and that way sets the gear height correct.
March 31st, 2018, 07:29 AM
#4
Gary
Join Date: Feb 2014
Location: Gillespie County Texas
Posts: 2,075
Look at the bottom of the drive gear on your original distributor. Observe how shiny it is. That's because the distributor gear is cut so that it pulls down, as Inline said. Also see that there are no shims above your original gear and the top of the gear is not shiny.
Shims would only be needed if the gear had an opposite hand cut and pulled up.
On an Olds, a shim would take up space that is there to allow the distributor to seat fully.
Shims would only be needed if the gear had an opposite hand cut and pulled up.
On an Olds, a shim would take up space that is there to allow the distributor to seat fully.
March 31st, 2018, 02:44 PM
#6
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Join Date: Apr 2009
Posts: 118
Actually Marc you had this cam custom ground for me. Part # E540996.
Im just now getting this engine back together after a year or so later because you nor the cam card itself told me it was a 4-7 swap cam. Sucks because I had to pull my engine back out, have everything redone and $800 bucks later here I am...I made a thread on realolds about why my engine wasn't running right and couldn't figure out for the life of me why it wouldn't run correctly. After swapping intakes, carbs, and checking valve lash it just came down to just having the wrong firing order..who would've thought that?? Anyway, engines running good now and would like to keep it like that. Anyone have a bronze gear? I've spent plenty already lol
Im just now getting this engine back together after a year or so later because you nor the cam card itself told me it was a 4-7 swap cam. Sucks because I had to pull my engine back out, have everything redone and $800 bucks later here I am...I made a thread on realolds about why my engine wasn't running right and couldn't figure out for the life of me why it wouldn't run correctly. After swapping intakes, carbs, and checking valve lash it just came down to just having the wrong firing order..who would've thought that?? Anyway, engines running good now and would like to keep it like that. Anyone have a bronze gear? I've spent plenty already lol
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