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1966 327 Upper Radiator Hose Question

Ronald

Well-known member
Joined
Dec 25, 2003
Messages
104
Location
Canada
Corvette
66 Coupe
Hi folks,

I would like to replace my upper radiator hose. I have a 1966 327 cu in, 300HP motor. I have a stock aluminum manifold (which I think was for a 350HP motor). I have the stock DeWitts aluminum radiator.

I see there are 2 hoses available for a 66. For the 300 HP it calls for a hose called: Radiator Hose Upper 327 Except Special High Performance (GM Part # 3887154 ). I think that is the one I should get.

However, there is also a GM # 3887156 which is for the 350 HP motor. That one is called "Upper 327 Special High Performance".

So... my question is what is the difference between the two hoses and how do I determine what hose I should get?
 

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