Are E-Tec 170 heads worth the money over iron vortecs. The flow numbers are better but they are 500+ each as opposed to 300 for modded vortecs.
I want 350-400 fwhp with comp xr270 cam.

 

If you like less weight they are.

 

I think the E-tecs and like 4 other vortec heads were all tested in Chevy High Performance magizine in this July's issue. I think it was this mag, I bought it and dont remember.

Check it out!

 

What amazed me is that they all pretty much made within 8 horsepower of each other.

 

I wouldn't buy any edelbrock SBC if it was me, you can get much better.

 

Like what would you recomend?
Does anyone know the general outcomes from the magazine test?

 

Here ya go.
http://www.chevyhiperformance.com/te...8_0507_vortec/

 

Thank you kindly.... Bit hard to source the mag in rural Australia.

 

True. The one thing to keep in mind though was because they were running so much compression on iron heads they used a slow timing curve in the dist to keep detonation down.

Had they taken advantage of the fact that the E-Techs are aluminum and recurved the dist, they'd have easily found more power and torque throughout the entire RPM range.

One head I was disappointed they didn't test was the Pro Toplines Vortec style heads. That would have been interesting to see.

Oh well. Perhaps I'll email them and tell them they forgot to include "Every Street-Style Vortec Head You Can Buy".

 

where can I find these pro toplines?

 

it appears jegs bought out topline,don't know if they will offer the 906 vortec yet.
i have a pair from just before they sold,and they are beautifully prepared!just hope they continue with the transition!
Eric B

 

It was Comp Cams that bought them out.
I have the E-Tec 200's
See sig

 

Google "protopline cylinder heads"