they werent edelbrocks flow tests.. it was the shops that did the swap for the magazine

 

was it an article about the edlebrock heads? make no mistakes about it, all magazine articles arent impartial.

 

Ya I apologize if I made it sound like I think the edelbrocks are JUNK... I'm sure they're OK heads.

However, If you're driving a car like mine (its winter, and my baby dont see snow/salt so having the heads off my car for a month is no big deal) and you're looking for specific gains... I want some individual attention from an experienced porter. Buying a set of heads w/o the springs, valves and retainers I want and then paying for: 1.) Building the valvetain, 2.) Any porting / flow bench work ... its somewhat of a no-brainer to at least first examine my stock head porting options... thats all. Also I want a cam that will compliment my heads well, and obviously in my turbocharged case I want a cam with the right overlap and duration to help get that lil guy spooled faster.

Also if any of these 'hand porters' didnt use flow bench before, during and after the port job.. I'd be in shock.

In the end its all up to us as the previous posted said.. you can debate it until you're blue in the face. Spend the money/time where YOU feel comfortable.

This debate reminds me of my ole' Mustang ownership days. When Thumper started selling ported stock casting heads that made more power than Twisted Wedges and AFR 185's ... people just wouldnt believe it.

 

I don't believe those flow numbers at all. Stock LT1 heads i think are around 205-15ish flow on intake, the LT4's i believe are around 230-240. There is no way they are flowing 260+ stock. Since all those numbers are inflated by about 20cfm's then i would say the Edelbrocks are probably flowing 220ish stock.

Edit: it shows the stock LT1 head flowing better than the Edelbrocks at low lift numbers, low lift numbers are very important too, not just peak. Those aren't very impressive numbers. I've always heard on this forum that all the aftermarket heads for our cars really aren't any better that stock heads as cast. The place the aftermarket heads beat our stockers is when it comes to porting.

 

Just had my LT 4 heads flowed. Now these heads have been cleaned up & port matched. The numbers are no where what they claim in the mag article.


.200 In. 136 EX 116
.300 189 145
.400 230 166
.500 257 176
.600 268 180

Me thinks somebody ain't figuring right ?

 

no 2 flowbenches are the same, the only well to tell would be to flow edelbrocks and stock castings on the same bench...