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How much lighter is an aluminum block vs. an iron one?

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How much lighter is an aluminum block vs. an iron one?

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Old

Apr 17, 2001 | 07:48 PM

#1

LottaBallsCamaro

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Joined: Dec 2000

Posts: 914

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From: Hampton Roads. VA

How much lighter is an aluminum block vs. an iron one?

thanks

Old

Apr 17, 2001 | 08:08 PM

#2

Supreme Member

Joined: Apr 2000

Posts: 1,338

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From: Chander, Arizona USA

Car: 2006 Silverado 1500

Engine: 5.3L

Transmission: 4L60E

standard 350 block is 197 LBS. aluminum 350 block is 90 LBS.

Old

Apr 17, 2001 | 08:32 PM

#3

Guest

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I searched and found my post

I weighed the 350 4-bolt block I have, theres nothing in it besides the main caps, bolts, and cam bearings, and it weighs 157lbs. I dont know if zippy was talking about a bare block or what, but thats what mine weighs.

Old

Apr 17, 2001 | 10:52 PM

#4

Supreme Member

Joined: Apr 2000

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From: Chander, Arizona USA

Car: 2006 Silverado 1500

Engine: 5.3L

Transmission: 4L60E

this is from the gm performance parts book. 350 4 bolt block one piece rear main without the seal adaptor. part no. 10105123. lists it as 197 pounds.

Old

Apr 17, 2001 | 10:56 PM

#5

Guest

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Heh... thats exactly what I have....
I wonder where the extra 40 is coming from? Hmmm...

Old

Apr 17, 2001 | 11:20 PM

#6

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Joined: Jul 1999

Posts: 4,384

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From: Tulsa, OK

Occasional afternoon beers...

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350, aluminum, block, engine, iron, lighter

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