Chevy 1960 Degree V6 Blocks PDF Power Manual

Chevrolet 60° V6
The Chevrolet 600 V6 is a compact powerhouse. This innovative engine has beaten both the competition and the elements in off-road racing. It is a proven winner in sports car racing, and it has a promising future on America’s oval tracks in the Midget classes. A Chevy V6/60° engine is the
perfect power-plant for a high-tech street rod or an ultralight autocross machine. GM Performance Parts offers the basic building blocks for a high-
performance V6/60°, including light alloy engine cases, high-compression pistons, and high-volume oil pumps.

Chevrolet’s 600 V6 has been produced in two distinct versions. First generation V6/60°s have cast iron cylinder heads with inline valves; second generation engines have aluminum cylinder heads with splayed valves. First generation V6/60°s are produced for front-wheel-drive and rear-wheel-drive chassis, while “Generation II” engines are installed in front-wheel-drive vehicles exclusively. Parts are interchangeable between the two versions except as noted in the part descriptions below.

Chevy V6/60° engines are available with 2.8–liter (173 cubic inch) and 3.1–liter (189ci) and 3.4-liter (207ci) displacements. 1985 and later V6/60°
blocks have larger main bearings than pre–1985 engines; these late-model blocks are recommended for high-performance and competition
applications. All Chevy V6/60° engines use metric fasteners exclusively.

GM Performance Parts has released an emission-legal (all states except California) 3.4-liter V6 engine conversion package designed for 1982-85 S-
10 pickups and Blazers originally equipped with 2.8-liter V6 engines. The 3.4-liter (207ci) version of Chevy’s popular 60° V6 offers nearly a 20%
increase in displacement over the 2.8-liter (173ci) V6 by utilizing a bore that is .120″ larger and a stroke that is .320″ longer. In addition to the larger displacement, the 3.4-liter engine benefits from an improved camshaft profile and valvetrain upgrades, which help it produce nearly 40 more
horsepower than the stock 2.8-liter engine.

The bigger 3.4-liter V6 is virtually a bolt-in for the above applications, utilizing the existing intake manifold, ignition system, emission system, and
water pump from the original 2.8-liter engine. Some models may also require using the oil pan or front cover from the original engine. The 1982-
83 models with manual transmission use a clutch cross shaft with a ball stud boss on the block. This new 3.4-liter does not have that clutch boss
cast on the block. The 3.4-liter engine conversion package (P/N 12363230) offers a considerable improvement in horsepower and torque over the 2.8-liter engine in an economical bolt-in package. This engine package includes the engine assembly, comprehensive installation instructions and decals.

10051141 — Bow Tie Aluminum Block
This heavy-duty aluminum block is 47 pounds lighter than a production rear- wheel-drive cast iron block. It has extra-thick cylinder walls with dry nodular iron sleeves. The head bolt bosses are reinforced to improve head gasket sealing. This block has wider main bearing bulkheads than a production cylinder case; four-bolt caps are installed on the two intermediate main bearings. These billet steel main caps have splayed outer bolts that provide additional bearing support.

The aluminum Bow Tie V6/60° block features a revised lubrication system. The “priority main feed” oiling is similar to a Chevrolet small-block V8, with three oil galleries above the camshaft; production V6/60° blocks have only two oil galleries. Oil is routed directly to the main bearings in a Bow Tie block to ensure proper lubrication at high rpm. The main bearing saddles are grooved to increase the flow of oil to the crankshaft journals through additional feed holes drilled in the upper bearing inserts. Block weight is 59 lbs….

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