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Old 09-06-2019, 08:43 PM
jl8z28 jl8z28 is offline
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Default Thermostat housing on a 69 Chevelle

A 69 Chevelle 396 350hp what thermostat housing should it have its a early car 10 a
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Old 09-07-2019, 12:31 AM
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Old 09-07-2019, 01:30 AM
jl8z28 jl8z28 is offline
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Are you sure about that the car had cast iron on it i know the L78 has the aluminum 660
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Old 09-11-2019, 03:42 AM
Bill Pritchard Bill Pritchard is offline
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I do not have definitive knowledge, but a cast iron thermostat housing certainly does not seem correct for ANY 69 big block to me. I know that my low mile 325hp 69 SS396 convert has an aluminum one on it. Engine build date of 12/30/68.
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Old 09-11-2019, 11:02 AM
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The thermostat housing would've been installed at the engine assm. plant if that might be food for thought. 660s are mostly what I've seen. No iron...Joe
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Old 09-11-2019, 11:47 AM
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Quote:
Originally Posted by jl8z28 View Post
A 69 Chevelle 396 350hp what thermostat housing should it have its a early car 10 a
No guarantees, but that's an L34 motor like mine and I'm sure built at Tonawanda like mine. I can't imagine them using two different thermostat housings to build the same engine, but crazier things have happened. Mine is a 660.
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Old 09-11-2019, 12:14 PM
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Aluminum 100% for 69 Big Block
Also keep in mind there are two types of 660 Housings, you want the one pictured with the number on the flange as mid-late 69 they started putting that number on the neck.
Painted Chevrolet Orange for Low Horse Applications and natural like photo for Solid lifter motors with aluminum intake.
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Old 09-11-2019, 02:08 PM
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Quote:
Originally Posted by XXXBlackLs6M22 View Post
Painted Chevrolet Orange for Low Horse Applications
Agreed. 325 hp & 350 hp are both considered "low hp". I have pics of a survivor low mileage L34 that has it painted with the intake.
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