From "eddie" in post 27.
"To the whiners:
...don't bi_ch-out Edelbrock..."
Funny how you reference Ed's post but selectively edit out the key parts.
"
They are putting together a cylinder head package based strictly by price point. Nothing wrong with that as long as
you, the consumer, is smart enough to know they are purchasing a basic cylinder head package and have to match the rest of the peripherals to the engine.
Other manufacturers such as Brodix and AFR put in their instructions, the information you need on valvetrain as well as a warning to make sure the springs match the camshaft. This is nothing new so don't bitch-out Edelbrock for doing this.
I remember the same complaints when Edelbrock came out with the new series of heads that contained all the latest valvetrain features and people complained about the "high" price. They just can't win.
It's simple, ya gotta pay to play."
Or this post by Ed later in the thread
"
They would have worked just fine if he "bolted them on" to a stock engine.
However, by using a non-stock camshaft, a different spring is required. "
Or this post by Ed later in the thread
"Ask "Tech Dave" why the Edelbrock literature regarding the SBF "E-street" heads, notes they did their dyno testing with their own amshaft #2122 -
a flat tappet hydraulic camshaft.
Those springs are not for any aftermarket hydraulic roller camshaft. Stock - maybe - but anything with some nuts is going to fail.
Things that make you go - hmmmmm..."
You must not have read these posts either Barney.
"The tech was very helpful. But he stated that the ad for the E-Street heads are very deceiving. It says they can handle a .550 lift. However, he said that anything over .500 would be overkill for the valvetrain. He even said a stock cam might be a bit too aggressive. As for the rpm limits...he said that the ad says the heads are good for up to 5500rpm....and nothing more. 6000rpm....forget about it. Let's be realistic, a stock headed 5.0 can motor to 6000rpm without valvetrain issues. He told me that the E-Street heads main purpose was to compete with the Chinese knock-offs(which have even worse valvetrain). He was trying to get the word out that these heads really are very deceiving and that if you want a mild cylinder head, then the Performers would be the way to go. "
Or this post
"Bought my estreets and changed the springs to PAC to match my fti cam. Then 1500 miles later broke a rocker stud while cruising to work. Now have arp studs I guess valves are next. If I had known I would have spent the money to get a higher quality head I guess you live and learn."
Those heads are junk. Put them on YOUR car. Don't tell newbs to put them on their car. And you can normally pick up TFS 170's for around 1050-1100 with dscount codes from several vendors.
