What Is The Difference Between 4 3 And 4 3l Vortec Engine The 4.3l v6 motor was the first to be called a vortec engine. at this time, chevy was developing its vortex technology, a proprietary method of mixing air and fuel in the combustion chamber. the 4. Additionally, the 4.3 vortec engine uses a more advanced hydraulic roller camshaft design, which allows for more precise control of the engine’s valve timing. as the two 4.3 engines may appear similar on their exterior, there is a vital difference under the hood: the classic 4.3 utilizes throttle body fuel injection technology while its.
What Is The Difference Between 4 3 And 4 3l Vortec Engine It is the 5th generation of the 4.3l v6 engine. one key difference between ecotec3 and its predecessor vortec is the fueling system. 4.3 ecotec3 uses a direct fuel injection (gdfi), while its predecessor 4.3 vortec uses csfi. in gdfi, the fuel feeds into an engine closer to the point where it ignites which enables greater combustion efficiency. Feb 9, 2015. #1. i am in a debate with my buddy who says the 4.3 mercruiser is just a gm vortec truck motor with different seals and freeze plugs. also says, put the marine seal and freeze plug kit in, then swap intake, exhaust, distributor, flywheel and accessories and you would never know the difference. says motor would run the same and last. 85 posts · joined 2012. #1 · jul 18, 2012 (edited by moderator) the 4.3l v6 engine was introduced in the s10, s15, & s10 blazer in 1988. the 4.3l v6 block and heads from 1988 to 1995 are fully interchangeable. in other words, a 4.3 l engine from 1995 will bolt in perfectly into blazers of earlier years that also were equipt with a 4.3 l engine. The 4.3 vortec is rated at 190 horsepower and 250 lb ft of torque, while the 4.3l vortec is rated at 185 horsepower and 260 lb ft of torque. additionally, the 4.3 vortec has been reported to have better throttle response and improved emissions compared to the 4.3l vortec.
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