thremo housing #3896958

[Pacecarjeff]

Aluminum thermostat housing #3896958 looks EXACTLY the same as the 3877660 housing.
Except for just the spring retainer flange is higher.
Anyone know what the application for the 958 is?

[Gramps69Z]

I Googled it and found 68-70 big block, also found this thread. 

http://www.camaros.org/forum/index.php?topic=7000.0

[lakeholme]

1.153 OUTLET, Coolant

66-68 CHEVELLE, CAMARO (396),
66-68 CHEVY, CHEVELLE, CAMARO (283,307,327,350)(exc. Sp. H/Per.) ...
... 3896958

-P&A 34 10/67

[Pacecarjeff]

Really weird considering the spring retainer was not utilized on the Camaros - instead attach at the coil bracket location.
I always thought the 396 Lo-perf Camaros used a Cast iron housing, as such I have that on my 67.

Are you guys saying the 67 396-325 should have this 958 aluminum housing painted orange?

[vtfb68]

Jeff,
L-78 Nova? They had the low profile intake.
  VT

[bowtie68iho]

I installed the aluminum 3896958 water outlet on my 3C (3rd week of March) 1968 Camaro 350 for the same reason lakeholme quoted...the P&A 34 said it was correct for my car.

According to my "Chevrolet Parts History Index" (Revised 1 Nov 1969), 3877660 superseded 3896958 in July 1968.