reproduction shop manuals are around $20 from several sources, like FillingStation.com They should have all the info you need

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'50 Chevy Fleetline DeLuxe ('55 235)
'48 Chevy Fleetmaster coupe ('60 235)
Chicago
http://www.geocities.com/hellfish122

'59 Chevy BelAir (v8)
'50 Chevy Fleetline DeLuxe ('55 235)
'48 Chevy Fleetmaster coupe (late 261)
Chicago