When did GM start using Vortec engine heads?
From 1996 to 2000, GM truck and van 350 engines came equipped with L-31 Vortec cylinder heads. Built of cast iron, these powerhouse heads upped the horsepower of these engines by magnitudes. This is primarily attributed to the high port flow in the.300”-.500” valve lift area, wide bowl, and back-cut intake valve and exhaust.
What to do if your Vortec won’t start?
96 Chevy C1500 5.7L Vortec Truck won’t start, Replaced Fuel Pump, Filter & Has Spark. Hey everyone, I have a 1996 Chevy C1500 with a 5.7L Vortec, I got the truck recently and was told it just needed a Fuel pump, I replaced the Fuel pump, and the Filter, also the pump turns on and there is fuel up at the rail, I pushed the pin and it shot right out.
When did the GM 350 Vortec engine come out?
Vortecs are highly prized among many van and truck enthusiasts, as they are among the best budget options for their time. From 1996 to 2000, GM truck and van 350 engines came equipped with L-31 Vortec cylinder heads.
Why was the Vortec cylinder head so revolutionary?
Many heads built before the early 90s required high degrees of ignition timing lead. Their burns were uncontrolled and random, leading to a less efficient combustion.The Vortec was revolutionary in such a market. It required only 30-32 degrees of lead, reducing the amount of pressure the engine had to fight.
From 1996 to 2000, GM truck and van 350 engines came equipped with L-31 Vortec cylinder heads. Built of cast iron, these powerhouse heads upped the horsepower of these engines by magnitudes. This is primarily attributed to the high port flow in the.300”-.500” valve lift area, wide bowl, and back-cut intake valve and exhaust.
Can a Vortec head be used on a small block Chevy?
While these heads will bolt right on a small-block Chevy, there are several caveats that you should be aware of before you torque those head bolts down. First, these heads employ a unique 8-bolt intake bolt pattern that’s different compared to the standard small-block Chevy 12-bolt pattern, requiring a dedicated Vortec manifold.
How much does it cost to replace a Vortec head?
The beehive springs we chose (PN 26915) drop right in place and no machine work is necessary and even the original seals can be reused. The detraction to this approach is cost – the beehive springs are more expensive than a conventional spring and with retainers and locks, the price comes to roughly $260.
Vortecs are highly prized among many van and truck enthusiasts, as they are among the best budget options for their time. From 1996 to 2000, GM truck and van 350 engines came equipped with L-31 Vortec cylinder heads.