[joes455]

Just ordered a bare set of of their 60609 cnc heart chambered heads with repositioned sparkplug .couldn't get much info on this site's search .Just wondering if heads come with seats ground ?

[thirdgen455]

Looking at summit it don't look like they are ground.

https://www.summitracing.com/parts/edl-60609

[ponjohn]

What are your intentions with them?

Ported? Street / strip? etc etc?

[PAUL K]

The seats won't be cut and the guides will need to be honed...a lot!

[steve25]

X2 with Paul.

[RUDOLFSSON]

Please post up pics when you get them!

Thanks, Kris

[Carmine]

I'm assuming that those Edelbrock aluminum heads come with push rod guide plates, would that be correct?? Thanks, Carmine.

[joes455]

Guides,longer valves and valve job no brainer.My original edelbrocks would have needed all of the above ,plus I'll be able to run higher seat height.I was hoping seat's were cut and guides reamed though ,so when they arrived I could put them on my flow bench.

[joes455]

Here is a pic of flow bench fwiw

[steve25]

The valve job applyed will greatly influence flow numbers which should be nice and fat starting at .300" lift.
If these heads will flow more then your last set I really think you need to go with 3.73 gears out back.

[harry k]

[Tom Vaught]

Originally Posted by joes455

Here is a pic of flow bench fwiw

Your Bench looks similar to one of Smokey Yunick's test rigs. I helped Jim Butler and the Boys with a similar set-up (4 cylinder Tempest Block) many years ago.
Give you an "A" on this one. About as close to uniform testing as you are going to get without spending lots of $$$$.

So what are you using for a vacuum source?

Tom V.

ps I built a bench for a 4 cylinder engine that would allow me to read each cylinder at the same time and also compare distribution
of the air to the runners in the manifold, the head, and the cylinders.
This bench was also capable of reading positive (Boost) pressure distribution to each cylinder.

[joes455]

Thanks for A rating Tom,vac is being produced by 3 5.5 10 amp vacuums ..they will generate 28 inch up to about 240 cfm .using a Flowquick .I get real close results .Setup lets me take 4 port readings in 10 minutes due to the quick change over from cyl to cyl.There is also an extra vac that is used for entrance porting using the quick disconnect system.Thanks again Tom

[Tom Vaught]

28 inch test pressure up to about 240 cfm is fine.
Bob Mullen (426 Hemi Cylinder Head Porter) flowed a lot of stuff at lower test pressures vs 28" and his stuff ALWAYS WORKED.
Tom V.

[joes455]

Nice set up Tom,one other thing that cut alot of time when testing was the modified 1 inch thick radius block that bolted to the port entrance .I did the putty thing for a few ports too many.

[Tom Vaught]

Originally Posted by joes455

Nice set up Tom,one other thing that cut alot of time when testing was the modified 1 inch thick radius block that bolted to the port entrance .I did the putty thing for a few ports too many.

I have a similar plexiglas plate (matches stock E-Heads) that has slots so I can position it over the port opening properly. I use button head allen bolts so that the airflow disruption is minimal.

So are you a member of the Flow Bench Forums?

Tom V.

[joes455]

Yes,same here bolt head is almost shallow with radius block .No forum yet sir.

[Tom Vaught]

Originally Posted by joes455

Yes,same here bolt head is almost shallow with radius block .No forum yet sir.

http://www.flowbenchtech.com/forum/

Have to sign up but they are great people and will like to have you join.
Only takes a short time. Tell them that I suggested you join and post up your picture and your vacuum source specs.

Tom V.

[AC445]

What size valves will you be using and will they be used on your current engine ?

[joes455]

Don't know yet , I'm would like a 1.9 install height and thinking 2.19 intake and retain the 1.66 exhaust valve.