'63 SHP distributor shaft

[Jim Cear]

Does anyone know 1)if the distributor shaft for a 63 340hp was the same for all models that year, and 2) how/if I could determine if the one in my distributor is correct. Thanks

[Mike M.]

Re: '63 SHP distributor shaft

midyear sb dist shafts all the same. if your shaft has provision for tack drive gear, it'll work. mike

[Edward McComas]

Re: '63 SHP distributor shaft

No difference in the cams attached at the top of the shaft to advance the weights? I understand that from 62-74, Chevrolet used 53 different weight cams on these shafts. Do I have this wrong?

[Duke W.]

Re: '63 SHP distributor shaft

All except FI used the same 1111024 distributor, but the OE 201 vacuum can is not at all suited to the Duntov cam. Since '63 FI had ported vacuum advance (for some incomprehensible reason) it didn't much care what vacuum can was used. FI shared the same OE vacuum can and centrifugal curve.

Is there any ID data stamped on the cam at the top of the shaft?

Duke

[Joe L.]

Re: '63 SHP distributor shaft

Jim------

The distributor shaft assembly for all 1963 Corvette applications except FI (FI uses a completely different shaft assembly as a result of FI drive incorporation) was GM #1961402. This assembly includes the shaft + auto cam unit brazed to the top. The auto cam is one of the 3 functional components in determing the mechanical advance characteristics of a distributor.

Often times, the auto cams are stamped with an ID number. However, I don';t know what the number is for the above-referenced shaft assembly. Dave Fiedler of TI Specialties might be able to help, though. You can e-mail him through his web-site of www.tispecialties.com

[Joe L.]

Correction

Dave Fiedler's web-site is www.tispecialty.com NOT specialties

[Timothy B.]

Re: '63 SHP distributor shaft

Jim,

I have a 63 300 HP car and I verified the parts in my distributor when apart for cleaning and lube. Auto cam is stamped #54, weights stamped #37, springs are 3/4" long, wt/cam stamped 724 CCW, vacuum can #201. I believe the other parts are the same for all other distributors.

[Jim Cear]

Re: '63 SHP distributor shaft

Thanks to all ! The distributor is on its way to Dave Fiedler as we write.