{"id":1025,"date":"2014-12-14T21:55:03","date_gmt":"2014-12-15T03:55:03","guid":{"rendered":"http:\/\/www.apatco.com\/corvette\/?page_id=1025"},"modified":"2014-12-14T21:58:16","modified_gmt":"2014-12-15T03:58:16","slug":"l48-l82-engine-comparison","status":"publish","type":"page","link":"https:\/\/www.apatco.com\/corvette\/?page_id=1025","title":{"rendered":"L48 & L82 Engine Comparison"},"content":{"rendered":"
<\/p>\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n\n
Engine<\/span><\/b><\/td>\n<\/b>1973 L48<\/span><\/b><\/td>\n<\/b>1973 L82<\/span><\/b><\/td>\n<\/tr>\n
HorsePower (Net Ratings)<\/span><\/td>\n190@4400<\/span><\/td>\n250@5200<\/span><\/td>\n<\/tr>\n
Torque (Net Ratings)<\/span><\/td>\n270@2800<\/span><\/td>\n285@4000<\/span><\/td>\n<\/tr>\n
Block Casting #<\/span><\/td>\n3970010<\/span><\/td>\n3970010<\/span><\/td>\n<\/tr>\n
Block Type<\/span><\/td>\n2-Bolt Mains<\/span><\/td>\n4-Bolt Mains<\/span><\/td>\n<\/tr>\n
Rods<\/span><\/td>\nDrop forged steel<\/span><\/td>\nDrop forged steel<\/span><\/td>\n<\/tr>\n
Crankshaft<\/span><\/td>\nNodular iron<\/span><\/td>\nForged steel<\/span><\/td>\n<\/tr>\n
Pistons<\/span><\/td>\nCast aluminum alloy<\/span><\/td>\nAlum. impact extruded<\/span><\/td>\n<\/tr>\n
Compression<\/span><\/td>\n8.5:1<\/span><\/td>\n9.0:1<\/span><\/td>\n<\/tr>\n
Heads Casting #<\/span><\/td>\n3998993<\/span><\/td>\n330545<\/span><\/td>\n<\/tr>\n
Heads (Materal)<\/span><\/td>\nHigh chrome cast alloy iron<\/span><\/td>\nHigh chrome cast alloy iron<\/span><\/td>\n<\/tr>\n
Valve Lifters<\/span><\/td>\nHydraulic<\/span><\/td>\nHydraulic<\/span><\/td>\n<\/tr>\n
Camshaft<\/span><\/td>\n.390\/.410 lifts<\/p>\n

195\/210 duration<\/p>\n

116 lsa<\/span><\/td>\n

.450\/.460 lifts<\/p>\n

222\/222 duration<\/p>\n

114 lsa<\/span><\/td>\n<\/tr>\n

Intake Valves<\/span><\/td>\n1.94<\/span><\/td>\n2.02<\/span><\/td>\n<\/tr>\n
Exhaust Valves<\/span><\/td>\n1.50<\/span><\/td>\n1.60<\/span><\/td>\n<\/tr>\n
Exhaust System<\/span><\/td>\n2.0″<\/span><\/td>\n2.5″<\/span><\/td>\n<\/tr>\n
Intake Manifold<\/span><\/td>\nCast alloy iron<\/span><\/td>\nCast alloy iron<\/span><\/td>\n<\/tr>\n
Exhaust Manifold<\/span><\/td>\nCast alloy iron<\/span><\/td>\nCast alloy iron<\/span><\/td>\n<\/tr>\n
The exhaust manifolds and the intake manifold were the same on the L48 and the L82. The L82 exhaust pipes jumped to 2 1\/2 just after the manifolds. The L82 used the same mufflers and tail pipes as the LS-4 big block.<\/span><\/td>\n<\/tr>\n
Balancer<\/span><\/td>\n6.75″<\/span><\/td>\n8.00″<\/span><\/td>\n<\/tr>\n
Distributor<\/span><\/td>\n1112098<\/span><\/td>\n1112130<\/span><\/td>\n<\/tr>\n
Carburetor<\/span><\/td>\nQ-jet<\/span><\/td>\nQ-jet<\/span><\/td>\n<\/tr>\n
Tach Redline<\/span><\/td>\n5300<\/span><\/td>\n5600 w\/AC<\/p>\n

6000 no AC<\/span><\/p>\n

\u00a0<\/span><\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

<\/center><\/div>\n","protected":false},"excerpt":{"rendered":"

Engine 1973 L48 1973 L82 HorsePower (Net Ratings) 190@4400 250@5200 Torque (Net Ratings) 270@2800 285@4000 Block Casting # 3970010 3970010 Block Type 2-Bolt Mains 4-Bolt Mains Rods Drop forged steel Drop forged steel Crankshaft Nodular iron Forged steel Pistons Cast …<\/span> Continue reading →<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1025","page","type-page","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/www.apatco.com\/corvette\/index.php?rest_route=\/wp\/v2\/pages\/1025","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.apatco.com\/corvette\/index.php?rest_route=\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/www.apatco.com\/corvette\/index.php?rest_route=\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/www.apatco.com\/corvette\/index.php?rest_route=\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.apatco.com\/corvette\/index.php?rest_route=%2Fwp%2Fv2%2Fcomments&post=1025"}],"version-history":[{"count":1,"href":"https:\/\/www.apatco.com\/corvette\/index.php?rest_route=\/wp\/v2\/pages\/1025\/revisions"}],"predecessor-version":[{"id":1026,"href":"https:\/\/www.apatco.com\/corvette\/index.php?rest_route=\/wp\/v2\/pages\/1025\/revisions\/1026"}],"wp:attachment":[{"href":"https:\/\/www.apatco.com\/corvette\/index.php?rest_route=%2Fwp%2Fv2%2Fmedia&parent=1025"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}