Vacuum advance D1383 GM1115360

[Jim R.]

Anyone know the specs for this control.

[Timothy B.]

Re: Vacuum advance D1383 GM1115360

Jim,

I think the 360 V/A control is 12*@ 12" vacuum.

[Joe L.]

Re: Vacuum advance D1383 GM1115360

Anyone know the specs for this control.

Jim------

GM #1115360 aka Delco #D1383


inches of vacuum to start the plunger= 7

12 crankshaft degrees advance @ 12 inches vacuum

maximum advance= 12 crankshaft degrees

[Jim R.]

Re: Vacuum advance D1383 GM1115360

Jim------

GM #1115360 aka Delco #D1383


inches of vacuum to start the plunger= 7

12 crankshaft degrees advance @ 12 inches vacuum

maximum advance= 12 crankshaft degrees

Joe do you know if this was this used on the 70 LT1

[Duke W.]

Re: Vacuum advance D1383 GM1115360

The data I have indicates that the recent aftermarket version is stamped "B10" and was available under NAPA Echlin number VC1765SP, however, I believe it's been discontinued.

This VAC was OE on L-72, and in lieu of it I recommend the B20 or B26, which has 16* @ 12".

I don't know if it was used on '70 LT-1, but the '70 AMA specs that you should be able to download from the GM Heritage Web site should include the VAC specs, which you can then match to a part number.

Duke

[Jim R.]

Re: Vacuum advance D1383 GM1115360

Thanks Duke, Joe & Tim

[Terry M.]

Re: Vacuum advance D1383 GM1115360

The vacuum actuator used on the 1970 LT1 (distributor 1111491) uses a vacuum advance unit of 1116201. Jim this information is in the 1970-72 TIM&JG, and has been for a decade or more.

Your vacuum advance was used on a 1970 L46 (350/350) distributor number 1112021.

If you are using the Chevrolet parts book these two engines are differentiated by HP (350/350) and SHP (350/370)

[Jim R.]

Re: Vacuum advance D1383 GM1115360

The vacuum actuator used on the 1970 LT1 (distributor 1111491) uses a vacuum advance unit of 1116201. Jim this information is in the 1970-72 TIM&JG, and has been for a decade or more.

Your vacuum advance was used on a 1970 L46 (350/350) distributor number 1112021.

If you are using the Chevrolet parts book these two engines are differentiated by HP (350/350) and SHP (350/370)

Thaks Terry , ( Don't have a 1970-72 TIM&JG)

[Terry M.]

Re: Vacuum advance D1383 GM1115360

Thaks Terry , ( Don't have a 1970-72 TIM&JG)

Jim, If you are looking for the applications for your 1115360 control, I don't want to mislead you. There may be many other applications than the 1970 Corvette L48 -- I just don't have easy access to that information, and since you asked about 1970 LT1 I went to the most readily available (to me) source..