My friend told me that GM makes aluminum vortec heads is that true or false?

 

There is no L31 aluminum casting that I am aware of, however the FastBurn is aluminum, uses the vortech intake pattern, and their price reflects it!

 

The GM fastburn head has both the standard chevy intake and Vortec bolt pattern. Edelbrock has aluminum vortec heads known as E-TEC 170 and 200. The 170 is better than the iron GM head and a good street head, but not a hi HP head like the fastburn. The E-TEC 200 is better than the Fastburn and outflows most the heads in it's categorey, but not the AFR CNC heads, CNC porting is hard to beat. The E-Tec's do have CNC port matching but are not CNC ported, yet. But at about $600 less than AFR I bought a set. These are the only "Vortec" aluminum heads I know of.

 

Alot of people incorrectly call the Fastburn heads AL Vortec heads. I've even seen them advertised as such. Fastburns have several similarities w/ the Vortecs, but they are not Aluminum Vortecs.

The only Aluminum Vortecs are the Edelbrock E-Tec heads like someone already said. They're not made by GM though. However, for the price I think you'd do better to go w/ the TrickFlow 23 degree heads. They match/outflow the E-Tec 200 and are actually cheaper.

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Ray87Z
-Vortec headed 350.
86 IROC w/ a cammed 305 TPI.
Formerly Ray86IROC.
www.inter-scape.com/Ray


[This message has been edited by Ray87Z (edited May 25, 2001).]

 

Not on the flowbench I saw, the E-TEC 200 outflowed the G2 which outflows the 23º.
With the trickflows you also get the cheaper construction, which I think has been talked about enough.
Fastburn heads also contain the manifold bolt pattern for Vortec style manifolds as well as the older style.

 

I am closeing thisa topic because it really has nothing to do with swapping motors. Next time please try the tech section.

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86Z28, GM 350, Jet perf Q-jet & chip Dual snorkel air cleaner, Edelbrock performer intake, Edelbrock headers, Edelbrock cat-back, Off road pipe, MSD 6AL, Accel Super Coil, Taylor Spiro-pro wires, Rapid fire plugs, Jet fan switch, World class t-5, Hurst Short Throw Shifter, Ram Flywheel, Center force dual friction clutch,Aluminum drive shaft, BW disc rear 3.45's & a posi, PBR calipers, Earls braided brake lines, Polygrapite bushings all the way around, poly tranny mount & torque arm mount, Hotchkis lower control arms & panhard rod, Rancho limiter straps, KYB struts & shocks, Gm Wonderbar, Edelbrock strut tower brace, SSM sub frame connectors, Jamex lowering springs, Carbon metallic brake pads, Crossed drilled rotors, Mobil 1 Tranny fluid & motor oil, GM syntheic rear end oil, K&N, Grant stering wheel, 1,200 watt system, Jet Black Paint, 91 Z28 rims, 92 wing, Tinted windows.