How much horsepower does Vortec heads add to a 350?
Porting the heads will definitely help airflow. You will gain 25 HP over the stock setup.
What year 350 has Vortec heads?
The Debut. From 1996 to 2000, GM truck and van 350 engines came equipped with L-31 Vortec cylinder heads.
What is the difference between a Vortec 350 and a regular 350?
The regular 350 head uses a 90 degree bolt angle while the Vortec uses a 72 degree bolt angle. When the head is bolted to the engine, all the attachment bolts point straight up, as experienced mechanics know.
How much HP can you get out of Vortec heads?
around 350-375 horsepower
Jeff Smith: We wrote about Vortec heads in 2016, and that article spawned this question. The original answer was related to modifying the heads to accept more valve lift. Our original answer combined the Chevrolet Hot cam with a set of these Vortec heads. Our estimate then and now is around 350-375 horsepower.
What vehicles came with a 5.7 Vortec?
The Chevy 5.7L Vortec engine was produced for Chevrolet Express, Chevrolet Suburban, Chevrolet Tahoe, Chevrolet/GMC full-size trucks, and Cadillac Escalade.
Is a 5.7 Vortec a LS motor?
Although Vortec engines are “LS” based they are NOT LS engines IMO. Besides most Vortec’s being iron block, as seen above there are some serious size differences and considerations depending on your project. VORTEC ENGINE IN CARS: For the most part, it will be challenging to put a Vortec truck engine into a car.
How much HP will Vortec heads add?
Most of these small block Chevy heads offer a power increase of around 40 hp, and even the iron Vortec heads were worth 20 hp over stock. The two best small block Chevy heads in terms of peak horsepower were worth more than 60 hp.
How much horsepower can you make with Vortec heads?
Why are Vortec heads so good?
The L31 Vortec heads have larger ports than the older Gen I cast steel heads, so they outflow the older heads. The Vortec heads are a little bit lighter than the older heads and have a “kidney” or “heart” shaped combustion chamber that is more efficient than the double hump chamber.
How much HP can a 5.7 Vortec hold?
5.7 Vortec Transmissions The Chevy 5.7L Vortec engine was paired with a General Motors electronic four-speed automatic transmission (4L60E). It is rated at 255 horsepower at 4600 rpm and 330 foot-pounds (lb-ft) of torque at 2800 rpm.