A 350 engine block typically weighs between 150 to 200 pounds.
The weight of a 350 engine block varies based on material, design, and manufacturer. Cast iron blocks are heavier, while aluminum versions are lighter. Additional components like crankshaft and pistons can increase total weight. This guide covers different 350 block types, their weights, and factors affecting overall mass.
350 Engine Block Weight by Material Type
| Material | Weight Range | Common Applications |
|---|---|---|
| Cast Iron | 150-200 lbs | Stock engines, heavy-duty use |
| Aluminum | 100-140 lbs | Performance builds, racing |
| High-Performance Iron | 180-220 lbs | Modified street/strip engines |
Factors Affecting 350 Block Weight
- Material composition: Iron vs. aluminum
- Bore size: Larger bores add minimal weight
- Deck height: Standard vs. raised deck
- Wall thickness: Reinforced blocks weigh more
Complete 350 Engine Weight Comparison
| Configuration | Weight Range | Components Included |
|---|---|---|
| Short Block | 350-450 lbs | Block, crank, rods, pistons |
| Long Block | 450-550 lbs | Short block + heads, intake |
| Complete Engine | 550-650 lbs | All components including accessories |
Weight Reduction Options for 350 Blocks
- Aluminum blocks: 50-60 lbs lighter than iron
- High-rise intake: Adds 10-15 lbs
- Aluminum heads: Saves 75 lbs over iron heads
- Lightweight rotating assembly: Reduces 20-30 lbs