Introduced in , the main differences between the L67 and the L32 are the L32’s electronic throttle control, slightly improved cylinder head design, and updated Eaton supercharger, the Generation 5 M Although the actual bore spacing between cylinders on the same bank remained unchanged at 4. Introduced in , the LN3 would later be loosely considered the Pre-Series I , although the older 3. It was introduced for and used the VIN code: A turbocharged version was introduced as the pace car at the Indianapolis , and a production turbo arrived in Final drive ratios are reduced in most applications, for better fuel economy and for improved use of the engine’s torque in the low RPM range.

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The engine is a popular choice for aftermarket modification thanks to its very strong internals and impressive power gains from basic upgrades. The L27 has a two piece, upper plenum intake and lower intake, the LN3 is all one piece.

This page was last edited on 22 Decemberat It is still a 3. The easiest way to spot the difference between the Gen2 and Gen3 is the smaller pulley and the ribs on the side of the Gen2 extend all the way down the sides, while the Gen3 ribs stay on only the top, they perform sightly differently and interchanging one without tuning may result in strange behavior of the engine.


The Series III engines include many changes.

This generation continued in use in several GM products into the s. By using this site, you agree to the Terms of Use and Privacy Policy.

The engine in this configuration became known to have “off-center bore spacing”. The new intake manifold greatly improved airflow.

However, AMC’s cost per unit was deemed as too high. GM fitted the affected vehicles with redesigned spark plug wire retainers.

InGM began to market the as the 3. It 38 also the standard powerplant in the front-drive Riviera and Olds Toronado from to Like most V6s, the engine is well known for its reliability and low maintenance costs.

Buick V6 engine – Wikipedia

Introduced init was a lower deck version of the 3. Views Read Edit View history. It shared the same bore size as its larger sibling, but featured a smaller stroke of 2. Emissions are also reduced.

The use of below 87 octane fuel can cause detonation that eventually leads to engine damage and v. This engine has the cylinders numbered on the left-hand bank front bank for FWD applications and on the buc bank, the number 1 cylinder being the furthest from the flywheel end. The engine, originally designed and manufactured in the United States, was also produced in later versions in Australia. Compression remains at 9. Fromthe 3. One quick idea was tried by Buick engineers — taking an old Fireball V6 picked up at a junkyard and installing it into a Buick Apollo.


Buick V6 engine

A new intake manifold improved breathing while a redesigned cylinder head featured larger valves and a higher compression ratio. Introduced inthe LN3 would later be loosely considered the Pre-Series Ialthough the older 3.

InBuick redesigned the crankshaft to a “split-pin” configuration to create an “even-firing” version. A smaller version of this engine was produced in and for the Century, Regal and Chevrolet Monza. This required that the piston connecting rods be shortened 1 in The off-center design continued up until the LN3 version of the engine, when the left-hand bank of cylinders was moved forward relative to the right-hand bank.

Larger valves and better intake and exhaust boosted the power output for This engine was used in the following cars:. The difference is that Series III engines received the new superchargers Generation 5 – Eaton Bhic – if equippedintake manifolds, fuel systems, and electronics.

Final drive ratios are reduced in most applications, for better fuel economy and for improved use of the engine’s torque in the low RPM range.