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Will Vortec heads fit a TBI 350?
The heads will bolt to the block fine but you will need a specific intake manifold. Either the gm TBI/vortec intake or a vortec intake for carbs and use an adapter for the tbi. If you use the carb intake you will loose the EGR. You can keep it with the gm intake.
What is the difference between Vortec heads and regular heads?
Vortec Intake Valve Seats and Combustion Chamber The Vortec combustion chamber is a kidney-shaped design that promotes better combustion and will have the spark plug located near the center of the chamber. The regular 350 head utilizes a 90 degree intake bolt angle while the Vortec makes do with a 72 degree bolt angle.
Will Vortec heads work with TBI intake?
These Vortec manifolds with TBI from Chevrolet Performance are designed for maximum horsepower with throttle body fuel injection and EGR usage. These manifolds will fit all Vortec-designed cylinder heads.
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 TBI and Vortec?
The differences between them are that the TBI had the injectors right in front of the throttle plate, where the Vortec placed the injectors behind the throttle plate; and the TBI was a speed density system, whereas the Vortec used a mass airflow system to manage the fuel-injection system.
What is the difference between TBI and vortec?
How much HP can Vortec heads make?
GM Vortec cylinder heads are used with a Comp Cams Xtreme Energy 262° camshaft to produce 390 HP and 426 ft-lbs of torque.
Are there different Vortec heads?
Types of GM Vortec Heads L31 Vortecs comes in two different casting numbers, 10239906 (#906) or 12558062 (#062). Originally, the stock #906 casting head was available in two versions. One version had an Inconel exhaust seat with single angle valve grind and was available on one ton trucks.
Is the 350 head the same as the 5.7 Vortec?
Vortec heads instantly added 55 or more horsepower to a regular 350 head with the same displacement. Automotive enthusiasts are quick to note that the 350 and the 5.7 Vortec are essentially the same engine with the same displacement. The 350 designation is the cubic inch measurement that also translates to 5.7 liters.
How many versions of’vortec’heads are there?
How many versions are there of ‘Vortec’ heads? L-31 Vortecs — there are two castings with two versions of one of these castings (#906). The two castings are the #062 and #906. The #906 is the same as the 062 with the exception as noted below.
What kind of engine does a 350 HO have?
The 350 HO engine has production Vortec cast iron cylinder heads. These cylinder heads were first used on 1996 trucks with fuel injection, RPO L31. The intake and exhaust ports are very similar to the 1992-1995 Corvette 350 LT1 heads. The heads include 1.94” intake valves and 1.50” exhaust valves with pressed-in 3/8” studs.
What’s the difference between two Vortec cylinder heads?
It is hard to tell the two cylinder heads apart when it comes to the physical aspect of the build, but there are major differences that make Vortec heads more powerful and efficient. The intake port of the Vortec head is different and measures 160cc with a modified port that increases the flow velocity.
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