Well, this test at least shows the Edelbrock manifold is inadequate for a very stockish LT1 with a very mild cam. The Edelbrock HP deficit is only going to worsen on stronger combonations, such as 383s, bigger cams, better heads, etc.

 

In for results of the Edelbrock on bigger/ported/port matched heads. If there is an obvious intake manifold port outlet to head port inlet mismatch no doubtedly would the aftermarket intake be down on power.

On another note, does ANYONE have any good pics comparing the two? Port dimensions, side by side illustrations, etc?

 

In the Feb issue on the 7107. They say that with the Edelbrock heads(ported 1 inch in) which we all know are JUNK, that the 7107(gasket matched) preformed about the same as a "Highly Modified" stock intake( 6 HP & 5 TQ diff). What I'm looking forward to is the March Issue. I hope they use a bigger cam and a good set a ported heads. I just bought a used 7107 from a member on this board and I'm hopping for a noticeable difference from my stock unported intake with my combo.

I will also gasket match my 7107 to my heads.

 

it looks as if the modded stealthram may just be the way to go! lookin good so far
http://www.ls1tech.com/forums/lt1-lt...lan-new-s.html

 

The whole test is a bit useless anyway - the intakes ports do not match up with the heads, and it had a ridge in the way of airflow. Add that to the fact that the stock intake is already plenty for a near stock LT1, and the test really does not prove or disprove anything.