Pontiac 326 motor

This small displacement engine packed a lot of punch. There is a reason why we used to preface automobile engines, like the Pontiacwith the manufacturer's name.

For , the unit-construction Y-body Pontiac Tempest and Le Mans, which featured a unique torque-tube and flexible driveshaft, a rear-mounted transaxle and independent rear suspension, were scheduled to increase in size and weight. The division had been using the Buick-built aluminum cu. V-8 engine in them as an option above the Pontiac four-cylinder, but now needed a midsized V-8 for what was growing very close to a midsized car. Dropping in the regular-production cu.

Pontiac 326 motor

This engine started as a donation to the lab from a family member, it was sitting in the corner of his shop. He had pulled it to make room for a modern GTO driveline into his old Lemans. Here is what it looked like when we picked it up, was a Pontiac That was about all that we knew at the time, it had what looked like a Turbo on it. It came with long tube headers, and some older upgraded parts. More on that soon. Made up some custom mounts to fit in into the 34X4 S10 quad cab chassis. Snug fit for such a massive block. The best part, the stock S10 driveshaft slid right into the Pontiac trans, have to love GM never changing anything! Now fast forward 8 years, Life issues got in the way, this is what was uncovered, to start again. First part of the project was to test fire the engine, I had no idea if it would run, or if it even worked. After a few hours figuring out the firing order and reverse distributor rotation.. Nice one Pontiac, I was able to get it fired up and running. Right after this video, I went to start it again, and the starter was dead. All these years and it gave me just enough time to be able to fire it up and make sure it worked and nothing sounded bad.

The crankshaft stroke and main journal size changed among the years with the more popular CI and CI having a 3.

Log in. Sign up. JavaScript is disabled. For a better experience, please enable JavaScript in your browser before proceeding. For this, however, I need drilling dimensions of the cylinder, dimensions of the main bearings, dimensions of connecting rod bearings and camshaft bearings. Sort by Oldest first Oldest first Newest first Most reactions. What you will find are the proper measuring processes.

For , the unit-construction Y-body Pontiac Tempest and Le Mans, which featured a unique torque-tube and flexible driveshaft, a rear-mounted transaxle and independent rear suspension, were scheduled to increase in size and weight. The division had been using the Buick-built aluminum cu. V-8 engine in them as an option above the Pontiac four-cylinder, but now needed a midsized V-8 for what was growing very close to a midsized car. Dropping in the regular-production cu. However, with some reengineering, the existing V-8 design had potential. Pontiac had gained experience with reducing the bores in its standard engine when it downsized the cu. V-8 in and the cu. It was also possible to put the engine on a weight-loss program by employing thin-wall casting techniques for the "" and and even the By decreasing bore size to 3.

Pontiac 326 motor

The Pontiac engine was a V8 engine introduced in to replace the Pontiac It was a smaller engine than the , with a displacement of cubic inches 5. The was a popular engine for Pontiac and was used for a variety of vehicles, including the Firebird, Grand Prix, Catalina and Bonneville. But why did Pontiac decide to call the a ? The answer lies in the fact that the engine was actually a modified version of the larger Pontiac engine.

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The bore was reduced to 3. So that is a pleasant surprise! Pontiac's V8s share the same 6. The 2-barrel kept the 20 degree valve angles for '67; starting in '68 all Pontiac V8s went to the 14 degree valve angle. This was underrated at hp kW. This small displacement engine packed a lot of punch. There is a reason why we used to preface automobile engines, like the Pontiac , with the manufacturer's name. Choose between 2. In , Pontiac also used a revised crankshaft out of a Pearlitic malleable-iron, although it still used the "N" casting letter. On the invoicing for the model year Firebirds, they had the option listed as L78, however, every equipped car received a W72 engine. The results showed Pontiac that an L-head simply couldn't compete with an overhead valve engine. Side Quest. This may have been propagated by the only authorized company that is licensed to reproduce these decals not including the "6. It retained the 's 4 in You need to locate a Motor's Manual for

The Pontiac engine was a powerful, V8 powerplant developed by General Motors in the late s and early s.

Collection Projects Tools. It was factory rated at hp at 5, RPM and lbs. Plans were made to produce Firebirds and GTOs with advertised ratings of hp kW and hp kW respectively but concerns about emissions, the response of the automobile safety lobby, and the warranty implications of a high-revving street engine led to cancellation of the program. Show Less. Now fast forward 8 years, Life issues got in the way, this is what was uncovered, to start again. By , Pontiac was no longer allowed to produce the engine as emissions further tightened. This section possibly contains original research. In Pontiac created four versions of the Ram Air V engine: a cu in 5. So step one is finidng a way to get power from the engine for it. Pontiac engines were used in its U. The inlets were all well within the boundary layer that exists close to the surface, so all of these systems would more accurately be described as "outside air induction" systems, benefiting from the intake of cooler, and thus denser, outside air versus the comparatively hotter and less dense air under the car's hood.