Today we have my dad's 1997 Chevrolet Silverado extended cab short bed two wheel drive equipped with a 5.7 Liter engine. Recently it starting making a banging noise coming out of the exhaust. It was odd because it just seemed to do it randomly. I scanned with my OBD II scanner and it had a PO300 code for random misfire. When I listened to it run i was pretty sure that it had a cracked distributor cap.Watch the video and tell me what you think. Please comment and if liked the video hit the like button. The Vortec 5700 L31 (VIN code "R") is a 5.7L V8 truck engine. It is Chevrolet's last production first-generation small-block. The cylinder heads feature combustion chambers and intake ports very similar to those of the LT1 V8, but lacking the LT1's reverse-flow cooling and higher compression. As such, the L31 head is compatible with all older small-blocks, and is a very popular upgrade. It offers the airflow of more expensive heads, at a much lower cost. It does, however, require a specific intake manifold (the L31 has four bolts per head attaching the intake manifold, as opposed to the "traditional" six bolts per head found on older Chevrolet small-blocks). Chevrolet's L31 was replaced by GM's LS-based 5.3L LM7 and 6.0L LQ4. The Vortec 5700 produces 255 hp (190 kW) to 350 hp (261 kW) at 4600 rpm and 330 lb⋅ft (447 N⋅m) to 350 lb⋅ft (475 N⋅m) of torque at 2800 rpm. Known as the GEN 1+, the final incarnation of the 1950s-vintage small-block ended production in 2003. It is still[when?] in current production as a crate engine for marine applications and automotive hobbyists as the 'RamJet 350' with minor modifications. Volvo Penta and Mercury Marine also still produce the L31. The "Marine" intake, despite its cast iron construction, is an L31 upgrade that allows use of common Bosch-style injectors with various flow rates while still maintaining emission compliance.
4 окт 2024
