Correct Water Pump - 1970 L78?

Seattle Sam · #1 08-01-2005, 04:49 AM

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 · #2 08-01-2005, 05:04 AM

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

Seattle Sam · #3 08-01-2005, 05:17 AM

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

Mr. T · #4 08-01-2005, 05:22 AM

I believe 3969811 was used from late 1970-72.

Seattle Sam · #5 08-01-2005, 05:37 AM

[ 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 · #6 08-01-2005, 05:56 AM

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

Seattle Sam · #7 08-01-2005, 06:01 AM

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

Mr. T · #8 08-01-2005, 06:07 AM

One year later and you would be in business!

Mr. T · #9 08-01-2005, 06:23 AM

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** · #10 08-01-2005, 06:25 AM

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.

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