Question: How much does a 305 block weigh?

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Maverick
1989 Formula 305 TPI 5-speed
Suspension mods, stock engine

 

About the same as any other SBC block. Somewhere between 100 and 150 pounds would be a good guess. I've picked one up and carried it across the yard.

 

I'm not positive about this but from what I've read on the internet a heavy duty 350 iron block weighs 197lbs and an aluminum is only 90lbs. The lightest iron block was 180. You're one strong **** for walking a block with no help.

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, Jon (91 RS too many mods to list), getting new engine in summer

 

I'm gonna go with J and say in the 180 range.
I know for a fact that a 1971 350 block from a suburban is Noticably heavier.

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It's always SOMETHING
"Sounds like Barry White at idle, Teddy Pendegrass wide open..
if it don't sound like Micheal Bolton your alright"

 

i'm gonna go with 180-190.

-brian

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1991 Camaro RS - Ultra Blue Metallic, T-Tops
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GM 350 HO Crate Engine - Vortec Heads, Edelbrock Intake, Holley 670 CFM TB, Edelbrock Water Pump, March Pulleys, MSD 6AL, Blaster Coil, 8.5mm Super Conductors, Cap and Rotor, Rapidfires, Hypertech Fan Switch & Chip, SLP 1 3/4" Stainless Headers, 3" Cat Back, Flowmaster 40 Series
700R4 - 2,400 Stall Converter, Vette Servo, Shift Kit, B&M Super Cooler
GM 10 Bolt -coming soon Auburn Pro Series Differential, Richmond 3.73s
Brian's 1991 RS Central NY F-Body Association
Join the Third Generation F-Body TBI Web Ring
z28boy@twcny.rr.com IM name: Z28 Boy

 

I couldnt take it anymore... Ive carried a block too, so...

I just weighed my std. bore 350 4-bolt roller block, its just the block; no crank, rods, pistons, cam, nada. Probably weighs slightly more than a 305 since it is a 4 bolt which means 6 more bolts and 3 larger main caps. And 305's are thinwall castings too.

157lbs.