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Vortec is a trademarked name for a line of gasoline engines for General Motors trucks. The name first appeared in an advertisement for the 1985 model year 4.3 L V6 that used "vortex technology" to create a vortex inside the combustion chamber , creating a better air / fuel atomization. [ 1 ]
The Chevrolet 90° V6 family of V6 engines began in 1978 with the Chevrolet 200 cu in (3.3 L) as the base engine for the all new 1978 Chevrolet Malibu.The original engine family was phased out in early 2014, with its final use as the 4.3 L (262 cu in) V6 engine used in Chevrolet and GMC trucks and vans.
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.
The Vortec 5300 L33 (VIN code "B") is an aluminum block version of the LM7, marketed as the Vortec 5300 HO. Instead of the LM7's dished pistons, the L33 uses the 4.8L's flat top pistons. It also uses 799 cylinder heads, identical to 243 castings found on LS6s and LS2s, lacking only LS6-spec valve springs and lightweight valves.
The firing order of older big-block engines is 1-8-4-3-6-5-7-2 [62] while Vortec 8100's firing order is 1-8-7-2-6-5-4-3. Other upgrades of Vortec 8100 include a new 18-bolt head bolt pattern, longer connecting rods, different symmetrical intake ports, different oil pan rails, and the use of metric threads throughout the engine.
Was the Vortec 5700 pushrod? Because my pickup has one and I just wanted to know, thank you. — Preceding unsigned comment added by 71.243.207.189 02:23, 24 March 2007 Yes, the Vortec 5700 was a pushrod engine. All Vortec V6 and V8 engines are pushrods. — Preceding unsigned comment added by 131.10.254.61 14:40, 4 April 2007
First-generation Chevrolet Silverado 2500HD (2001–02 Regular Cab) The GMT800 Silverado/Sierra 1500 and 2500 pickup trucks were released in August 1998 as 1999 models. The "classic" light-duty GMT400 C/K trucks continued to be produced for the first two years alongside the new models, and the Heavy-Duty GMT400 pickups (alongside the GMT400 SUVs) were continued until 2000, with the new GMT800 ...
Type 51, 1915. The Type 51 was the first Cadillac V8. Introduced in 1914, it was the standard engine for 1915 Cadillac models. It was a 90° design with an L-head configuration and was water-cooled.