Chevy 5.7 Vortec Engine for Sale | OEM L31 350ci Generation I Small Block
Rated 4.50 out of 5
2 reviews
In Stock
Product Overview
- Displacement: 350 cu in (5.7L)
- Engine Family: GM Small Block Chevy, Generation I (final production generation)
- Configuration: V8, OHV, 16 valves
- Horsepower: 255 hp at 4,600 rpm
- Condition: OEM used, compression tested and inspected
- Availability: Multiple year ranges from 1996 to 2002 in stock
- Shipping: Free freight to all 50 states, 5 to 10 business days
- All 8 cylinders pressure-tested with results shared before payment
- Vortec head intake bolt pattern disclosed on every order, most common installation mistake
- 4-bolt main block confirmed, stronger than earlier 2-bolt 350 blocks
- Hydraulic roller cam confirmed
- Zero core charge required, your existing engine stays with you
- Backed by a 15 day replacement warranty against internal defects
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At a Glance
- Condition: OEM used, all 4 forward gears and reverse tested
- Availability: In stock, GM SM465 transmissions available
- Shipping: Free shipping to all 50 states via freight pallet, 5 to 10 business days
- Donor truck year confirmed (1968-1991 range)
- Synchronizers verified on 2nd, 3rd, and 4th gears
- Granny low engagement verified specifically (non-synchronized)
- Bell housing pattern confirmed (SBC, BBC, or diesel)
- Input shaft spline count verified (10-spline standard)
- 4WD vs 2WD configuration confirmed
- No core charge required
- Backed by a 15 day replacement warranty against internal defects



