Weight difference between a SBC V8 and a Chevy V6? - Hot Rod Forum : Hotrodders Bulletin Board
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Old 07-07-2005, 05:08 PM
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Weight difference between a SBC V8 and a Chevy V6?

I am looking at getting some Eibach springs for my Trans Am, and I am debating on whether or not I should get the V8 version or the V6 version. I have a SBC V8, however it is significantly lightened with aluminum heads, aluminum intake, and the removal of smog equipment, etc. Is this enough of a weight drop to be around the weight of an otherwise stock V6 with iron heads and intake? I believe Eibach makes these springs based on the stock weight of these engines so I need to know which to use.

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Old 07-07-2005, 06:30 PM
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I dont know exactly, but Id say the sbc with alluminum heads n intake would be pretty close to an iron headed V6.
The power will be cheaper and more easily attained with the sbc to.
I do however like the V6 motors with there decent power and ease of intallation. Your choice. HG
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Old 07-07-2005, 06:42 PM
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So you're saying I could get away with running the V6 springs with my aluminum headed V8 in the car? I'm guessing the spring rate on the V6 springs is a little lighter to accommodate the lighter engine weight. If I use the V8 springs I could be riding high on the front end because my engine is quite a bit lighter than the V8's they designed them for.
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Old 07-07-2005, 07:35 PM
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Id say you would be OK.
At the most it may lower it a slight bit, but I dont think it would be noticible.
Switching springs with the engine in wont be hard. Do the V8 swap and then if you dont like it, swap em out. No need for useless buying if you dont need to. HG
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Old 07-07-2005, 07:56 PM
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Is this to lower the stance or improve handling? or both?
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Old 07-07-2005, 08:37 PM
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If I were you I would call Eibach, they're know better than most of us.
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Old 07-07-2005, 09:10 PM
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engine weights

Here is a site with 100s of engines and their weights.
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Old 07-07-2005, 09:19 PM
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Sbc is 575 as generic weight
4.3 is 475

Since you have aluminum heads and intake and looseing emissions garbage the weight is probley very close and aluminum waterpump wouldnt hurt either
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Old 07-07-2005, 10:40 PM
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hey, thanks for that site, bracketeer. You are a wealth of knowledge, as always

I figure I would be very close to a V6 weight, so I will get the V6 version of the springs. Your help here has been invaluable.
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