Your Guide To The 5 7 Hemi V8 Engine The 5.7 hemi features a deep skirted cast iron cylinder block, fitted with a nodular iron crankshaft. this crankshaft itself is held in place with four bolt mains. attached to the 5.7l hemi’s crankshaft is a set of powdered metal forged connecting rods and lightweight aluminum pistons. interestingly enough, each of the engine’s cylinder. The 5.7 v8 has an overhead valve (ohv) valve train with a single in block camshaft. there are 2 valves per cylinder, for 16 valves total. due to the ohv valve train, the hemi uses an old school pushrod design for simplicity. the pistons are made from hypereutectic aluminum alloy and connecting rods from powdered metal.
Your Guide To The 5 7 Hemi V8 Engine The worst years. gregory bojorquez getty. while the 5.7l hemi is a powerful and reliable motor, it isn't free from bugs. a few model years, in particular, have proven more problematic than others. After the initial 5.7l gen. iii hemi was introduced in 2003, chrysler made its first major revisions to the 5.7l gen iii hemi with the appearance of the eagle version engine starting in 2009. this engine, referred to as the eagle, introduced variable cam timing (vct) and combined that with the multiple displacement system (mds) that demanded. Chrysler 5.7l 345 hemi overview. the 5.7l power unit was a completely new engine designed from scratch. like the 4.7l powertech v8, the 345 hemi engine has a cast iron cylinder block with a deep skirt design and a 90 degree angle between cylinder banks. the crankshaft made of cast nodular iron is supported by four bolts per main bearing. The longevity of a 5.7 hemi engine ranges from 250,000 to 300,000 miles. once you reach this number, the engine performance declines significantly. it will eventually die. nonetheless, the 5.7 hemi engine may last less than 250,000 miles. it depends on the extent of usage and the environmental conditions. for instance, the more you use it on.
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