Editing Chrysler A engine (section)

==Plymouth==
===277===
The '''277''' "Hy-Fire" was the first A-block engine, produced for 1955 in the fall of 1954 and sharing almost nothing but the basic concepts with other engines built by Chrysler. Bore is {{cvt|3+3/4|in|mm|1}} and stroke is {{cvt|3+1/8|in|mm in|sigfig=3}} for a piston displacement of {{cvt|276.117|cuin|cc|0|adj=ri1}}. It was replaced by the 301 in 1957, except for in low-priced Plaza models where it continued to be used during the 1957 model year.<ref name="chrysler">{{Cite book | title = Standard Catalog of Chrysler, 1924-1990 | first = John | last = Lee | publisher = Krause Publications, Inc. | location = Iola, WI | pages = 390–391 | year = 1990 | isbn = 0-87341-142-0 }}</ref> Power for the two-barrel version is {{cvt|187|hp|kW|0}}; this increased to {{cvt|200|hp|kW|0}} for the four-barrel "Power Pack" version which also came equipped with dual exhausts.<ref name=wildabout>{{cite web | url = http://wildaboutcarsonline.com/cgi-bin/pub9990262549620.cgi?itemid=9990393974551&action=viewad&categoryid=9990393951409 | archive-url = https://web.archive.org/web/20220629161945/http://wildaboutcarsonline.com/cgi-bin/pub9990262549620.cgi?itemid=9990393974551&action=viewad&categoryid=9990393951409 | archive-date = 2022-06-29 | title = The 1956-1967 Plymouth Polyspherical Head Explained | work = Eric B. White Digital Documents Library | publisher =  Automotive History Preservation Society }}</ref> The Power Pack was also fitted to the [[Facel Vega FV#FVS|Facel Vega FV3]], of which 48 examples were built in 1956 and 1957.<ref name=FVclub>{{cite web | url = https://facelvegacc.com/models/fv1b/ | archive-url = https://web.archive.org/web/20221003180056/https://facelvegacc.com/models/fv1b/ | archive-date = 2022-10-03 | title = The FVs | work = Facel Vega Car Club }}</ref>

===301===
The '''Plymouth 301''' replaced the 277 in 1957 and kept that engine's {{cvt|3.125|in|mm|1}} stroke. Its piston displacement is {{cvt|299.606|cuin|cc|0|adj=ri1}}, thanks to the larger {{cvt|3+29/32|in|mm in|sigfig=3}} bore. These dimensions are entirely different from the 1955 [[Polyspheric#301|Chrysler 301]]. This engine was also installed in the 1957–1958 Facel Vega FV3B.

===303===
The 1956 '''Plymouth 303''' displaces {{cvt|302.521|cuin|cc|0|adj=ri1}} and uses the same [[connecting rod]]s as the 277; the bore is {{cvt|3+13/16|in|mm in|sigfig=3}} and the stroke is {{cvt|3+5/16|in|mm in|sigfig=3}}.

This engine was used in the following vehicles:
* 1956 [[Dodge Custom Royal]] (Canadian)
* 1956 [[Chrysler Windsor]] (Canadian)
* 1956 [[Plymouth Fury]], {{cvt|240|bhp|kW|0}} with 4-barrel [[carburetor]]
* 1957 standard on all {{cvt|118|in}}-wheelbase Dodges and Plymouths

===313===
A {{cvt|312.521|cuin|cc|0|adj=ri0}} version of the A engine called the '''313''' was produced from 1957 to 1967 primarily for [[Canada|Canadian]] and [[Complete knock down|export]] markets. This engine has a bore of {{cvt|3.875|in|mm|1}} and the common {{cvt|3.3125|in|mm|1}} stroke, and was used in the following vehicles, amongst others:
* 1957 Canadian [[Dodge Custom Royal]]
* 1957–1964 Australian [[Chrysler Royal (Australia)|Chrysler Royal]]
* 1958–1967 standard or available in all Canadian-market Dodges and Plymouths except [[Plymouth Valiant|Valiants]], [[Plymouth Barracuda|Barracudas]], and [[Dodge Dart|Darts]].
* 1961–1963 [[Bristol 407]]
* 1963–1965 [[Bristol 408]] Mark I

===318===
The '''318''' is the most common version of the A engine, produced from 1957 through 1966 in the US and 1967 in some export markets when it was replaced in all markets by the [[Chrysler LA engine#318 V8|LA 318]]. Only Plymouth used this 318 in 1957 and 1958, but it was shared with Chrysler from 1959 on and Dodge from 1960 on.<ref>{{cite web |last1=Lotspeich |first1=Justin |title=Poly A Block History |url=https://poly318.com/poly-318-engine-history-information/ |website=Poly318 |publisher=Poly318 |access-date=7 July 2022}}</ref> It displaces {{cvt|318.192|cuin|cc|0|adj=ri1}} and has a {{cvt|3.91|in|mm|1}} bore and the {{cvt|3.3125|in|mm|1}} stroke.

A high-performance version called the V-800, offered in 1957 and 1958, used two four-barrel Carter [[carburetor]]s to produce {{cvt|290|hp|kW|0}}, making it the highest-output factory A engine. It was used in the 1957 and 1958 [[Plymouth Fury]], but was also an option on Plymouth models lower in the model range.

[[Bristol Cars]] introduced the 318 in the Mark II model of their [[Bristol 408|408]] (in 1965) and continued to use it in the succeeding [[Bristol 409|409]] and [[Bristol 410|410]] until 1969. From 1962 until early 1965, [[Checker Motors Corporation|Checker]] used this engine for their [[Checker Aerobus|Aerobus]] limousines.<ref name="scind">{{Cite book | title = Standard Catalog of Independents: The Struggle to Survive Among Giants | author = Naul, G. Marshall | editor = Ron Kowalke | publisher = Krause Publications, Inc. | location = Iola, WI | page = [https://archive.org/details/standardcatalogo00ronk/page/35 35] | year = 1999 | isbn = 0-87341-569-8 | url-access = registration | url = https://archive.org/details/standardcatalogo00ronk/page/35 }}</ref>