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Kirkham Motorsports

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  #1 (permalink)  
Old 08-26-2007, 03:29 PM
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Default Weight difference?

What is the weight of a 289 motor and the 427 motor? Both in stock trim.
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Old 08-26-2007, 03:44 PM
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small block-480lbs,FE 610lbs. Both stock all iron.gets close when you put Alum. heads& intake on FE then it goes 520 lbs.
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Old 08-26-2007, 05:17 PM
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Quote:
Originally Posted by Wheels427
small block-480lbs,FE 610lbs. Both stock all iron.gets close when you put Alum. heads& intake on FE then it goes 520 lbs.
Thanks, that's exactly what I wanted to know. I was interested in what a cast block 427 with aluminum heads and intake weighed in comparison to a cast, stock 289. Thanks again.
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Old 08-26-2007, 06:52 PM
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I have heard that you can save 70 lbs if you install an aluminum intake on a FE.

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Old 08-26-2007, 06:59 PM
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I read an article recently that Carroll found he could shave 150 lbs. off the weight of a 427 by changing the heads from cast to aluminum. Is this accurate?
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Old 08-26-2007, 07:05 PM
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no it is not
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Old 08-26-2007, 07:41 PM
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Heads aren't that big. You can generally look at something in the range of a 50 Lb weight reduction in going from iron to aluminum heads.
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Old 08-26-2007, 08:23 PM
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You do lose about 45 lbs on the intake swap.
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Old 08-27-2007, 04:15 AM
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Thanks for the info, guys, much appreciated!
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Old 08-27-2007, 06:07 AM
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Default All aluminium 427 against 289 iron small block

Badsnake427 If you go with the so call specs of above there is about a 45 lb differents. 427 iron heads 38lbs, edelbrock heads 18 lbs. Shelby block 122 lbs. own (2) iron block 210-220 lbs. Water pump iron 12-14 lbs, edelbrock water pump 4-6. iron exhaust manifolds 20-40 lbs each, set of headers, under 20 for short ones to side pipes. Shelby block is heavier than Ponds or Genesis block also by 5-10 lbs. Kirkham is coming out with a lighter block for the FE that is under 100 lbs. You can go with aluminium rods and save another 5-7 lbs over lemans rods. Rick Lake
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