1978 Pontiac 403 Engine Diagram

We help a user get more power with an rare oldsmobile 403 engine. 1978 81 pontiac v6 misc engine parts set 50. The 403 was made from 1977 to 1979 and used across the buick olds pontiac and cadillac vehicle lines.

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The early years saw only pontiac engines in the 400 and 455 ci sizes.

1978 pontiac 403 engine diagram. The pontiac 400 6 6 liter engine was first introduced in 1967. Pontiac began as a companion to the oakland division of the general motors line of automobiles in 1926. In 1977 the 403 oldsmobile engine appeared wheezing its 185 hp. 77 1978 1979 trans am firebird with olds 403 engine mounting brackets for air conditioning compressor power steering pump and alternator.

The toronado version of the 1977 oldsmobile 403 engine was fitted with a crank triggered ignition system. It was sort of meant to replace the previous use of big block engines in the bop line. I used the pages above to put my lines on a 79 with a 403. Pontiac successfully competed against more expensive inline four cylinder models with their inline flathead six cylinder engines.

The engine was only produced through 1979. 1978 manual pg 906 vacuum diagram 1978 manual pg 57 vacuum a c help you will get a 1978 set of manuals on the cd and a 1979 supplement. Over the years many different engines were slotted into the second generation pontiac f body. When you get your 1979 cd take a look at these pages for vacuum help on the 79 with a 403 engine.

Pair 1977 79 firebird trans am 403 v8 engine mount brackets sold. All removed from a 1980 firebird. The 400 was inspired by the pontiac 389 v8 and proved to be the last pontiac engine with closed chambered heads. This version of the pontiac v8 engine was used in the gto firebird and the trans am firebird.

At the start of the 1970s the 400 v8 generated more than 300 horsepower. Pair 1978 80 firebird trans am 305. It was also used in other applications like motor homes boats and some industrial applications. Most of the firebirds being restored today are the performance versions of the formula and trans am.

New 66 81 pontiac v8. 4 1968 pontiac v8 ignition wire holders sold. 77 1978 1979 trans am firebird with olds 403 engine mounting brackets for air conditioning compressor power steering pump and alternator. Output was 185 hp 138 kw and 320 lb ft 430 n m.

The pontiac v8 engine is a family of overhead valve v8 engines manufactured by the pontiac division of general motors corporation that made its debut in 1955. The olds 403 was used by buick and pontiac in addition to oldsmobile. Great condition one side has minor repairs.