View Full Version : Ignition: Spark modifier

06-28-2012, 06:08 PM
Would anybody know where to buy a spark modifier . I have a 61 lark 259 v8. the diaphrapm is shot. Or a diaphram I can rebuild. Tom

06-28-2012, 06:16 PM
The 61s'used the Delco window type distributor....any pre -76 GM product will work (v8)

06-29-2012, 07:58 AM
If i remember correctly, the NAPA part number for the vacuum advance is VC685, it's the part for a mid 60's Chevy 283 distributor. You can also use a Crane adjustable advance unit which is available from suppliers such as Summit racing or Jegs. Bud

06-29-2012, 10:29 AM
Thank you for your help. Tom

06-30-2012, 05:55 PM
The part no. is NAPA vc680. You were very close when you vc685. the vc680 is the same as the original. $14.95 with tax.Thank you again for your help. Tom