Correct Water Pump - 1970 L78?

[Seattle Sam]

Is the water pump casting number the same for 1970 L78 and LS6 motors?

What would be the correct water pump casting number for a January 1970 L78 Camaro?

Thanks in advance for your help, you guys have ALL the knowledge...

-SAm

[Mr. T]

3931065 casting # for your L78 Sam, including LS6 Chevelles. Late L78's and LS6's also used 3969811.

[Seattle Sam]

Thanks Tony,
Was the 3969811 only used on 1971 models?

[Mr. T]

I believe 3969811 was used from late 1970-72.

[Seattle Sam]

[ QUOTE ]
3931065 casting # for your L78 Sam, including LS6 Chevelles. Late L78's and LS6's also used 3969811.

[/ QUOTE ]

DOH!

Tony,
Thanks for the info. I better find a 3931065 with a date code of late Dec 1969.
-Sam

[Mr. T]

The 69 SS396 Camaros also received the 3931065 water pump, which carried over to early built L78's.

[Seattle Sam]

Thanks, saw this Dec 30 1968 pump on eBay..item number 7989634859

[Mr. T]

One year later and you would be in business!

[Mr. T]

By the way Sam, what is the build date of your car, and the assembly date of the L78? I will keep my eyes open for you.

[Mr70]

Sam
The 1970 L-78 & LS-6 used the #811 Waterpump regardless of Car it was installed in,not the #065.
#065 was used for engines before the 1970 release,Maybe,Maybe Aug.-Sept. 69 built cars got them,at least from my findings.
Your not going to find an #065 dated Dec.69,they stopped making them around May 69??
I have an #811 here I took off an LS-6,dated L 69.

[Mr. T]

Hmmmm, just to make sure and to double check the casting numbers on the 70 L78's, I just went back to both of my reference books, including Colvins, and it states that the early 70 BB's used the 065's.

[Seattle Sam]

[ QUOTE ]
By the way Sam, what is the build date of your car, and the assembly date of the L78? I will keep my eyes open for you.

[/ QUOTE ]

Tony, Car is an 01C, and the L78 CKO engine was assembled in Tonawanda Dec 19 (T1219CKO)

Thanks

[Mr. T]

A November casting date would also work.

[Mr70]

I think Alan has since revised that statement.
It was discussed on one of the Websites in the Winter,and no one was able to find one dated Past early 1969.
I would guess that they did use up #065's inventory on the later 69,early 70 BB vehicles,as they ALL used that design pump.
My Oct.69 built L-78 Chevelle & all the ones I have complied a database from had #811's,as well as the LS-6's I could document as original equipment.
The pump I mentioned earlier I have is Dated Dec.17,1969.