I'm putting a pump gas 340 stroker (4.0 inch stroke) motor together and I have ordered a set of Eddy part number 60179 heads and their RPM air gap intake.
Have any of you on here ran those heads? If so what do you think of them?
I'm asking now that it is to late for me to not use them
Thanks in advance. Cab

I will NEVER buy another set of small block mopar hears again till they get their act together. (except the new cnc Victor head) ProMaxx heads put their's to shame and cheaper to but i don't know if they offer an open chamber head. I've gone pretty fast this the open chamber head but only after I spent a lot of hours on them.
1970 Duster
Edelbrock headed 408
6.143@110.89 mph
9.73@135.05 mph shifting at 6700 RPM

It (the 60179) has the open chamber for a positive deck height piston like a oem 340 type head.

If you went flat top or dished with a quench pad at approx zero deck like most use on a stroker the pn is 60779 being the closed chamber head.

The 60179 casting is a head many never pick for a small block stroker.


https://www.summitracing.com/parts/edl-60779

https://www.summitracing.com/parts/edl-60179

The two links show in there pics the closed chamber vs the open chamber head.

Only reason I even bought the set of open chamber heads in the post above was because I bought them for 450.00 from a Moparts member after he dropped a valve. I repaired them and then installed a 2.08 valve and spent lots of time porting them. Before I put them on another engine I will be getting them cut some to jump the compression up.

Cab, I run the closed chambered units. The head itself is on a .030-360. (367 cid)
The ports are stock and basically (IMO) ideal for the size engine it is on and at there Max so to speak. I believe, that on a 400+ engine, they should be very well ported.

Milling the chamber closed is fine. It's what? .060 to cut?
OK, maybe check intake bolt alignment.

I'm currently doing a number on a set of closed chamber Eddie heads, on strip down I found the heads have been suffering from valve float. The cam was only a mild hydraulic & the 360 was only revd to 5500 rpm but I was surprised at what I found. Needs new valves n locks n springs after 18 months. I think if I'm buying new heads in future I'm buying bare n filling them with known quality parts. These package deals are a bit iffy if you ask me.

IMO, the only reason to use the open chamber head is if you're building a motor that will have positive deck height.

I've always used the closed chamber version for the stroker builds I've done.

I like these heads for up to about 575-600hp builds.
Beyond that, I think there are better choices...... Especially if you're paying for port work.

An open chamber and a flat top will be perfect for pump gas with a stroker. They are small for a stroker but still run good and make lots of torque.

Yes, if you want to play head gasket games to get a good quench. For years ive gotten by with a about .003 under deck (piston rock) and a mopar .028 head gasket with 7400 shift points. Its tight but it works. I know others go more to be safe.

Oem block with the closed eddy chamber heads.

There is only 2cc difference between the open and closed chamber Ede sb mopar heads......65 vs 63.
I doubt this will be enough to correct a build that has too much compression with the 63 version, and when you swap to the open chamber version you lose quench(if running flat tops).

There are plenty of pistons available that will work with 4" cranks and the closed chambers, and still be pump gas friendly.
Icon IC745 for one.

I like the closed chambers too. On my 408 I used a shelf Diamond dish piston and milled my heads to 55cc to get 10.9-1 for pump 93.

Why buy the open chamber garbage. Garbage is exactly what it is if you aren't dealing with a +.020 or more proud piston. Lose all the benefits of quench with the correct gasket. Even with a proud piston, I run closed chamber and get a proper thickness head gasket.

60779 head is the better piece for a stroker.

I agree 100%. The 360 style head is the way to go.

These are the heads I would buy but what the heck do I know.



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