Hello,
Your assistance is needed as I am looking for an original Delco distributor vacuum advance unit for my '70 W30 - I believe this is the correct p/n 1973427 or D1315A or MS 427-16. Any information will be greatly appreciated.

949-300-7751 mobile

 

from the PN database:

1973427
VACUUM ADVANCE unit for pts Dist'r.
...Stamped "MS 427 16" = 16 Crank Degrees advance possible.
__Starts at 10-13" Hg., 4.2-7.3 °Dist @ 16" Hg., 7.2-12.8 °Dist @ 25" Hg.<= per 70 CSM

RockAuto says: AIRTEX / WELLS Part # 4V1190, replaces #1115361, 1973408, 1973427, 88924973, DV1755
w/Dist. No. 1111289, 1111292, 1111469, 1111471.
...Dist'r #'s: 1111981, 1111982, 1111979, 1111977

1969 Olds w/ 455; 69 exc.F-85 w/455;
1970 4400 [442] OAI; 1971 4400 [442] AT exc. OAI;
1972-1973 Marine Engine.

+++ 72 Olds paper PNM:
69 400 Perf. Eng. Or 442 w/ 455 Eng ('<= only 442 w/ 455 in '69 was the H/O Hurst Olds);
69 455 Eng. exc. F85; 70 4400 O.A.I. = 1970 442 W30;
70 3600, 4200 455 Eng. 2 BC (*4) = 1970 1st type used with dist'r # 1111981
71 4400 exc. O.A.I. w/A.T.; 72-73 Marine Perf. Eng.;
70 CSM: Most 455's use '427 VA unit. one '408, one '430 listed"

 

Do you need the whole dist

 

Hello Bill,
Just seeking an OEM vacuum advance for my car, but do you have an 1111979 distributor? If so, I may be interested in purchasing an extra one....

 

I don't. But I did get lots of vacuum advance pieces today I can check one sec

 

IMG_20131208_194641_zpsb21c1673.jpg

 

any of them new in the box?
my 1968 would use one stamped

418 16

for PN 1973418 and 16 degrees advance provided

Original Poster- I probably have a used one but I assume you need a pretty and new one. Presumably you tried a google search on the number and feepay searches set up to notify you if one appears?

 

I have 2 I thought but none in box so I can't tell

 

It appears I only have one but it only says b9 and if you also need it I have two points no weights bit one is a Mallory blue streak used little to none still springy and a nos bravo one let me know

 

"B-whatever" stamp is generic aftermarket
I had that decoder a while back but not sure I can find it.
Google should find it
try google on 1973511 and 1973427

 

OK so I take it you aren't interested

 

The B9 advance can starts at 7-9"Hg and maxes out at 10.3° at 16-18"Hg.

It is the equivalent of the NAPA VC1605.

It's 10° max is not the same as the 16° max that Octania noted above for the 1973427.

- Eric

 

Ok so this one is more than likely for a SB olds

 

According to NAPA, it interchanges with a wide variety of Chev. and GMC trucks, a few Chev. cars, and a '66 Poncho 389, but not any Olds.

That doesn't mean that it can't be used in Olds applications, but their engineers didn't think it was a good match for any of them.

- Eric

 

Odd it came in a bunch of olds parts

 

It would be used on an HEI, where you don't need much vacuum advance.

 

Ahhh OK thanks Eric(s)

 

Sorry, Eric, but the B9 is a points advance.

It won't fit an HEI.

- Eric

 

Delco ACDELCO Part # D1394C at $24
is the best I can do today
Rockauto.com
I may have a used one in the pile o' distributors, or on the parts car, but the sheer search adds up to more than $25... for a used part... looks unlikely.

 

I have a real one,which has a curved vacuum pipe. I also have a NORS still in the box,also with the curved,#D1315A.

 

Please send photo(s) of the D1315A unit you have and your asking price to my Email address....

 

Hello Everyone,
Located and purchase an OEM unit. Thank you all for your assistance!!!