FE Power Cylinder Heads

[machoneman]

Ooh! That intake is gorgeous indeed! Nice to see that you went two-parts for easy porting, Seems those walls are thick enough too to easily increase their size, if needed, for even larger CID engines with maxed out heads.

Very nice Jay! 

[JamesonRacing]

Jeez Jay, that single-4V intake makes the Ed 2863 on my adapter look like a pup!  How much taller is that intake than others you've fabbed?

[BigBlueIron]

Jay,
 
The 1/4" linkage between throttles, are they all the same length or do they need to be adjustable for each one. If they are the same length what is it. I might have an idea for you.

[jayb]

Jay,
 
The 1/4" linkage between throttles, are they all the same length or do they need to be adjustable for each one. If they are the same length what is it. I might have an idea for you.

They are nominally the same length, except for the two that go back to the linkage bellcrank.  However, given slight variations in mounting or machining, being able to adjust each one individually  is an advantage.  But I'm curious, what's your idea?

[jayb]

Jeez Jay, that single-4V intake makes the Ed 2863 on my adapter look like a pup!  How much taller is that intake than others you've fabbed?

David, when I get to the FERR I will try to get a picture of this intake and intake adapter next to one of my 13006 intake adapters and the 2863 manifold, to show the height difference.  It is substantial...

[Ghoughton]

Lovin that single 4 intake! Nice! When you’re designing your intakes, these and sheet metal,
how are u figuring the runner volume and taper? This stuff is looking really nice. I can’t believe
the quality of parts you’re able to produce.

[BigBlueIron]

Jay,
 
The 1/4" linkage between throttles, are they all the same length or do they need to be adjustable for each one. If they are the same length what is it. I might have an idea for you.

They are nominally the same length, except for the two that go back to the linkage bellcrank.  However, given slight variations in mounting or machining, being able to adjust each one individually  is an advantage.  But I'm curious, what's your idea?

I devolved a solid link rod few years ago used for control linkage, its a long shot they are the correct length but they look close.. But as you stated adjustment is probably necessary. I see clearance gets tight on a few runners,  possibly using a threaded rod with female ends vs male ends and coupler would provide more room but probably not a concern.

[jayb]

Finally catching up from the FERR and have a couple of pictures to post comparing the Edelbrock 2863 intake on my 13006 intake adapter with the FE Power intake and intake adapter.  Pretty big difference LOL!  The FE Power intake carb flange is a full 2-1/2" higher than the Edelbrock carb flange.

By the way, for anyone interested in purchasing production versions of the cylinder heads, see my post about getting on the list in the Vendor Classifieds section.

[JamesonRacing]

If I go that direction I'll definitely need a taller scoop!

[cjshaker]

I notice a height variation between some of the ports. Like #1 and #8 are higher. I highly doubt that's just a fluke, so what's the reasoning behind this?

[Ghoughton]

That Intake is awesome!! I love 2-4’s but this has me rethinking it

[jayb]

I notice a height variation between some of the ports. Like #1 and #8 are higher. I highly doubt that's just a fluke, so what's the reasoning behind this?

The reason for the height difference is all geometry.  The four outboard runners are all the same, just rotated or mirrored in different directions.  Looking at the front of the manifold, the #1 intake runner enters the plenum a little higher than the #5 runner.  That is because the #1 cylinder is farther away from the plenum than the #5 cylinder, so the #5 runner hasn't risen quite as much as #1 when it hits the plenum.

I thought about trying to equalize the height, but then the runners themselves wouldn't have quite the same shape and trajectory.  I felt that was more important than making the runner entry the same height into the plenum, because there is enough meat in the plenum to allow someone to port the runner entry up a little if that was desired.  The fact that the manifold splits in half makes it easy to do porting work, and I figured that everyone has their own thoughts on the best way to shape that area, so I left it as is.

[cjshaker]

The reason for the height difference is all geometry.  The four outboard runners are all the same, just rotated or mirrored in different directions.  Looking at the front of the manifold, the #1 intake runner enters the plenum a little higher than the #5 runner.  That is because the #1 cylinder is farther away from the plenum than the #5 cylinder, so the #5 runner hasn't risen quite as much as #1 when it hits the plenum.

I thought about trying to equalize the height, but then the runners themselves wouldn't have quite the same shape and trajectory.  I felt that was more important than making the runner entry the same height into the plenum, because there is enough meat in the plenum to allow someone to port the runner entry up a little if that was desired.  The fact that the manifold splits in half makes it easy to do porting work, and I figured that everyone has their own thoughts on the best way to shape that area, so I left it as is.

I knew there had to be a good reason. I don't believe I've ever seen that difference in distance compensated for, so very nice job of thinking inside the box

[wcbrowning]

Hi Jay, do you know when you'll be able to begin your dyno testing?

... the picture below is of the pistons I ordered for the dyno mule that I will be testing the heads on.  I plan to do some comparison testing between ported Edelbrock heads, CNC ported Blue Thunder medium riser heads, and my heads in unported condition.  So, the pistons are designed to be used with the standard FE valve location, or the valve location that my heads use.

[jayb]

I'll hazard a guess that I'll be ready to test the heads at the start of April; I would really like to have it done and be ready to go to production by the time of the FE Reunion.  But I've had a lot of unexpected delays, so no promises...