There should be a bolt in the crescent shaped cutout which holds the distributor to the block. The bolt screws into the block and allows some room to move the distributor so you can adjust the timing.
~ Jon 1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
That 90 degree bracket on the vacuum advance unit is supposed to be bolted to the hole in the block just to the left of the distributor. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
All those bolts are tight. In the end it was the clamp at the base of distributor. It has to be very tight and that is not easy after decades of screw drivers have worn out the screw head. Thanks for great help.
You can take that screw to Ace Hardware and get a new one or get a hex bolt with the same threads.
1950 Chevrolet 3100 (Ol' Roy)
1939 Packard Standard Eight Coupe (The Phantom) | 1956 Cadillac Coupe de Ville (The Bismarck) | 1964 Ford Galaxie 500 coupe |1966 Ford Mustang (Little Red) | 1969 Pontiac GTO (The Dishpit) I 1979 Ford F-100 | 1976 Ford F-150 (Big Red) | 1995 Ford F-150 (Newt)
File the slot a little wider, or use a thin cutoff wheel on an angle grinder to widen it. Then put a new screw in. Jerry
"It is better to be silent and be thought a fool than to speak and eliminate all doubt!" - Abraham Lincoln Cringe and wail in fear, Eloi- - - - -we Morlocks are on the hunt! There is nothing noble in being superior to your fellow man; true nobility is being superior to your former self. - Ernest Hemingway Love your enemies and drive 'em nuts!
Excellent. Now the special screw with the spring that screws into that crescent shaped slot. Is there a washer under that spring? It seems the spring without a washer works its way into the crescent slot.
Last edited by klhansen; 09/06/202512:25 AM. Reason: fixed image display
I'm guessing at this point because my memory of it is dim but I think there may have been a washer under the spring to prevent just what you mentioned.
~ Jon 1952 1/2 ton with 1959 235 | T5 with 3.07 rear end
Punch - Can you post the "distributor number"??? I've got old Delco Remy documents with parts lists and diagrams I can go back and check to see what was there and hopefully answer your question.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
I did a little bit further research and came across this exploded view in a 1929-32 Chevy Master Parts Book (below). The circled washer is what you are looking for an answer on, so I think this gives you a pretty good "yes" as if there should be one there.
Unfortunately all my resource books don't show that washer part number "821601" in the drawing with any details on the washer specifications. The written descriptions in the book seems to indicate the washer as "813046" - Washer manual advance arm tension spring.
My best SWAG recommendation is to take the screw and spring to the hardware store and find a flat washer that just exceeds the outer lower spring diameter and inner diameter just slips over the screw. That should give you what you're looking for I think.
~ Dan 1951 Chevy 3 window 3100 Follow this story in the DITY Gallery "My Grandpa Carl's Truck and How it Became Mine" 1966 Chevelle (Wife's Hot Rod) | 2013 Chevy Silverado (Current daily driver) US Army MSG Retired (1977-1998) | Com Fac Maint Lead Tech Retired (1998-2021)
