GM intake ? GM 10052951 thermostat housing?

[Egknz71]

Name is EJ location Dallas I have BB 496 with GM 10052951 have been trying to locate the specific thermostat housing that actually has the 4 holes in it need help guidance and good advice my first time coming across intake like this thanks in advance

 

[mattillac]

Welcome to the forum.

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I'd be just speculating, but after looking at some images / info, it appears as though maybe the t-stat housing only has 2 holes for two bolts.

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059 Manifold, intake 10052951 - -

060 Stud, hex (3/8-16x1. 24, 3/8-16x. 75)(#1 rh) 00336793 - -

060 Stud, intake manifold (3/8-16x0. 78)(#3, 4, 5 lh)(#3, 6, 7 rh) 10085606 - -

061 Thermostat, (195 deg)(acdelco #131-87) 12514334 - -

062 Gasket, coolant outlet(acdelco #10105135) 10105135 - -

063 Outlet, coolant(acdelco #15-1461) 10126717 - -

The above info comes from here (after searching that part number you provided).

K1500 PICKUP 4WD - Engine asm-7.4l v8 part 2 > Chevrolet EPC Online > Nemiga.com

Parts catalogs. Spare parts catalog Chevrolet EPC Online. Chevrolet K1500 PICKUP 4WD. . Engine asm-7.4l v8 part 2.

nemigaparts.com

The intake imaged way up top is from a old ebay listing, best I can tell.

You must be registered for see images attach

A pic from ebay of the part number listed by nemigaparts.

Makes me wonder whether the t-stat housing bolt holes in the intake there are exposed to coolant / passages. Like if you only used two bolt, would the others two holes leak coolant.

Hopefully others here have better, more definitive info for you.

Best of luck.

 

[1998_K1500_Sub]

I would naively guess that the manifold has four (blind?) holes to allow for different clocking of the common “two-bolt” t-stat housing / water neck.

Different applications of the same manifold, in various production vehicles, may have benefited from the ability to clock the housing this way or that.

 

[GoToGuy]

Do the holes penetrate the water passage? It's not a 4 hole thermostat housing , it can be clocked in two different positions. Way old part numbers often get superseded, or even dropped after a few successions.
That's nice you have a manifold OE parts number, but almost nobody will know what your asking about. But if you said " I got a stock BB manifold with a spread bore pattern maybe ? " Why does it need a heater under the TBI, is this for Arctic duty?

 

[Egknz71]

Welcome to the forum.

You must be registered for see images attach

I'd be just speculating, but after looking at some images / info, it appears as though maybe the t-stat housing only has 2 holes for two bolts.

You must be registered for see images attach

059 Manifold, intake 10052951 - -

060 Stud, hex (3/8-16x1. 24, 3/8-16x. 75)(#1 rh) 00336793 - -

060 Stud, intake manifold (3/8-16x0. 78)(#3, 4, 5 lh)(#3, 6, 7 rh) 10085606 - -

061 Thermostat, (195 deg)(acdelco #131-87) 12514334 - -

062 Gasket, coolant outlet(acdelco #10105135) 10105135 - -

063 Outlet, coolant(acdelco #15-1461) 10126717 - -

The above info comes from here (after searching that part number you provided).

K1500 PICKUP 4WD - Engine asm-7.4l v8 part 2 > Chevrolet EPC Online > Nemiga.com

Parts catalogs. Spare parts catalog Chevrolet EPC Online. Chevrolet K1500 PICKUP 4WD. . Engine asm-7.4l v8 part 2.

nemigaparts.com

The intake imaged way up top is from a old ebay listing, best I can tell.

You must be registered for see images attach

A pic from ebay of the part number listed by nemigaparts.

Makes me wonder whether the t-stat housing bolt holes in the intake there are exposed to coolant / passages. Like if you only used two bolt, would the others two holes leak coolant.

Hopefully others here have better, more definitive info for you.

Best of luck.

Actually the other holes are leaking

 

[Egknz71]

The other 2 holes are leaking that’s why I was wondering if they make a thermostat housing that has 4 holes ?

 

[1998_K1500_Sub]

The other 2 holes are leaking that’s why I was wondering if they make a thermostat housing that has 4 holes ?

Interesting.

Do the any / all holes appear to be blind holes, into which someone once installed a “too long” bolt which caused a crack and a leak?

Or, are any / all holes obviously cast and machined as being open to the coolant passage?

I’m simply curious. Don’t bust a nut simply to respond.