How much of a split in cam duration (if any) do you tend to use on your builds with those heads?

 

The most common is 237/245@50 597/.597 112lsa, this is in our 500HP 383 combination. We have used a few larger cams, but on custom builds mainly with different setups. Smaller builds we will use a 220/224 @50 528/536 110lsa and that will draw up to around 450HP+ with an air gap and a 680cfm vac secondary.

 

Brandon how long have these been out? I remember reading about them awhile back. BTW whet do the ex. ports measure W x H?

 

The Pro-filer version years, our version we have been using for about a year now, didn't release them to the public when we got enough stock until about 6 months ago.

Exhaust port dimensions are 1.430T x 1.500W

 

Brandon, Are those heads ready to run out of the box, as far as the valve job/machine work goes or do they need to be checked?

 

Just like any Edelbrock, Dart, AFR it would be wise to check things over and blow them out. I use these on all my builds, hundreds a month and havent seen any issue with them other than maybe some shavings left inside on a couple, very rare. I shim the springs for certain applications depending on the engine build as well, but very nice Heads, no machine work should be needed.

 

Give me a call, I have the heads in stock with our ATK version which has a better fitting exhaust port that will work with off the shelf headers as well as a better oil drain back system. Have a 7% off sale for Chevelle members right now :thumbsup:

He really doesnt move any of the 2.02 mainly the 2.05 and we are his #1 buyer of heads, I have him back logged

ATK SBC Performance Aluminum Head 64cc/210cc

 

Wish I had of seen this sooner or I would have called (that's my fault as it was a few days before I got back on here). Went with a set of Dart Pro 1 heads. Before my Dad retired from drag racing, he ran them on his 57' and really liked them. Though I respect Dart a great deal, I really wanted to go with Pro Filer but after waiting for so long, just for me to call and learn I was no closer to getting them anytime soon, I had to go with another manufacturer due to some time constraints.

 

A 2.05 valve should not be an issue. But if it is, it's only because the eyebrows of the valve reliefs needs to be opened. I used 2.05 valves on my 355 with SRP Pistons.