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Old 03-27-2020, 09:01 AM   #1
callbald
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Default bolt torque difference iron block & Aluminum Head

Ok, up popped a rattle in my Galaxie 289 water pump that has to be replaced. The engine had been converted to aluminum heads. The shop manual calls out 12-15 ft lbs, but that's for cast iron block and heads. Any idea what torque to use on the aluminum heads? Thanks Rob
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Old 03-27-2020, 09:51 AM   #2
40 Deluxe
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Default Re: bolt torque difference iron block & Aluminum Head

As I remember, those are 5/16" bolts so the bolt itself is the limiting factor. 12-15 ft. lbs. should be OK in aluminum as spark plugs in aluminum heads are torqued to around 20 ft. lbs.
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Old 03-27-2020, 02:37 PM   #3
darrell
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Default Re: bolt torque difference iron block & Aluminum Head

the water pump doesnt bolt to any head.nothing would change.
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Old 03-27-2020, 03:42 PM   #4
callbald
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Default Re: bolt torque difference iron block & Aluminum Head

Your are correct, it does not bolt to a head. I was looking at the head bolt holes for the P/S bracket. This rebuild is getting the better of me.
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