GM/Chevrolet 5.7 350 - Production Years 1970-1979

Description

The Chevy 350s manufactured between 1970 and 1979 are some of the most impressive Chevy small blocks ever manufactured.

The Chevy 350s manufactured between 1970 and 1972 are some of the most sought-after performance engines in history.

During this time period, Chevy manufactured several variants of the 350, all with different performance specs:

• L46 from 1969-1970
• L48 from 1967-1980
• L65 from 1970-1976
• LM1 from 1969-1979 in all passenger cars. Until 1988 in B & G-bodies.
• ZQ3 from 1969-1974 as the standard Corvette engine.
• LT-1 from 1970-1972, one of the most sought-after performance engines ever made.
• L82 from 1973 to 1980
• LS9 1969-1986

Makes & Models

From 1970-1979, the 5.7 liter Chevy 350 was an option for almost every single passenger car and truck GM/Chevrolet manufactured during the time period.

Performance specifications for each model varied widely throughout the time period as GM grappled with increasing fuel economy requirements as the 70s wore on.

2-Bolt Chevy 350s

2-bolt 350s, and 2-bolts in general, are far more common than 4-bolts. You can tell an engine is a 2-bolt by removing the oil pan and looking at the crankshaft mountings. If there are two bolts there, it’s 2-bolt.

2-bolt Chevy 350s are capable of handling 400-450 horsepower, though the higher end may experience strain. This is fine for most applications outside of performance and muscle car builds.

4-Bolt Chevy 350s

4-bolt 350s are rarer than 2-bolts. They were almost exclusively used in Corvettes and 3/4 ton trucks made during the era.

They’re the go-to for high-performance builds, though, and they can handle over 450 horsepower and 6000 RPMs in the right environment.

1970-79 Chevy 350s from MABBCO

Short Block Chevy 350s

• 2-Bolt Main Chevy 350 Short Block
• 4-Bolt Main Chevy 350 Short Block

Long Block Chevy 350s

• 2-Bolt Main Chevy 350 Long Block
• 4-Bolt Main Chevy 350 Long Block

Performance Chevy 350s

• Performance Short Block 350 (2-bolt)
• Performance Short Block 350 (4-bolt)

Chevy 350 Camshafts, Cylinder Heads, and More

• Big Valve 350 Cylinder Head (1968-1979)
• Standard Chevy 350 Cylinder Heads (1968-1979)
• Chevy 350 Crankshaft (1968-1985)
• Chevy 350 Rebuild Kit (1968-1985)

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