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Small block Chevy guys, gotta question for ya.

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2wrench

2wrench

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My son put a 305 Chevy V-8 in a 1965 Chevy Impala.
He pulled the distributor to rebuild it.
Can't get the dizzy to drop back in. Says he's
got piston 1 at top dead center. Frusterated.

Please innumerate all of the reasons that even remotely
come to mind as to why a dizzy will not drop into
place...
I'll start the clock and you number 'em.
Read? Set?? Go!
 
There is a six sided shaft that the dist. must go over. This drives the oil pump. Generally, a little persistence and the dist will fall into place. There is really no other reason for the dist not to go in. If more info is needed, just reply. Will help all I can
Dave
/bcforum/images/%%GRAEMLIN_URL%%/cheers.gif
P.S. Have a Merry Christmas
 
14dna said:
There is a six sided shaft that the dist. must go over. This drives the oil pump. Generally, a little persistence and the dist will fall into place. There is really no other reason for the dist not to go in. If more info is needed, just reply. Will help all I can
Dave
/bcforum/images/%%GRAEMLIN_URL%%/cheers.gif
P.S. Have a Merry Christmas
Click to expand...

Sorry, dude. Your thinking of a Ford oil pump drive shaft. Chevys have a large slot in the top of their pump shafts. If he took the distributor out and DIDN'T move the crankshaft, the distributor will drop right back in place if it is timed correctly. If he has spun the engine then he will have to put the piston on TDC and point the rotor button about an inch to and 1 1/2 before the #1 plug wire. This allows for it to mesh with the cam gears. Bump the engine around to TDC again and it should line up and the distributor will drop after it aligns with the oil pump shaft. Let me know if he's still having trouble. /bcforum/images/%%GRAEMLIN_URL%%/grin.gif
 
I had the same problem on my 350 Chev Blazer. I did as mailbox suggested, after the dist/cam gears are aligned and meshed bump the starter. {you may need to turn the engine one complete revolution before the dist shaft and the oil pump align} The dist, will align with the oil pump and go the rest of the way home. You may need someone to apply a slight downward force on the dist while you bump the starter.

P.S. my Ford 460 has the hex shaft for the oil pump, had to do the same thing with it.
 
Things come back slow sometimes. I had a set of wrenches I made for the crank pulleys of different cars to move the crank and seat the distributors. Too many years old and too many years ago to remember some of those things quickly.
 
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