Are Vortec heads prone to cracking?
The 062 heads are just cast heads with the valves cut into them and are really prone to cracking.
How much lift can Vortec heads take?
The factory Vortec heads use a light, single-wire valvespring with a damper that generates between 70 and 80 pounds of load on the seat. Because these heads are meant to work with a 1.5:1 rocker, their tall valve guides can only handle maximum valve lifts of around 0.420 inch.
Is it worth porting Vortec heads?
Your question relates to porting the Vortec heads to improve the flow, which is a great idea. The Vortec heads offer great intake port flow despite the rather small 1.94-inch valves. Where you can gain substantially more power is by concentrating on the exhaust side of the head.
Can cracked Vortec heads be fixed?
you get that engine overheated and you’ll risk cracking the block or some other damage. You best bet is to take those heads to a machine shop and see what they think. They will repair them if they can if not they’ll be scrap!
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.
How do I get more valve lifts?
Every little bit counts when it comes to performance and an excellent way to squeeze some extra power out of your engine is by increasing your rocker arm ratio. For example, moving from a 1.5 ratio rocker arm to a 1.6 would effectively increase the overall valve lift.
Where can I find a Vortec 062 cylinder head?
The “062” version has three triangles on the front to identify it. These are what you typically see on GM crate engines that we sell here at Speedway Motors. The other version “906” used one single hump on the front. They are identical other than the markings. My advice is to look for these at your local salvage yard.
Is the Chevy Vortec cylinder head cast iron?
Chevy Vortec Cast Iron Cylinder Heads The Chevy Vortec head is an excellent choice for a variety of performance and race applications. Since its introduction in the late 1990’s there have been a few “versions” of the factory Vortec head. We use the new, new Chevrolet produced casting for applications that require the factory Vortec head.
Are there two versions of the L-31 Vortec cylinder 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. Using the 906 heads myself, I can safely say do not worry about any percieved weakness in HP potential in comparison to the 062.
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.
