Ford GT40 289 Race project, Ford C6FE cylinder heads, Second cut

[@ElvinLeadfoot]

The sanding roll work on that exhaust port it stellar:)

[@servediocylinderheads]

@@ElvinLeadfoot Anyone can do it! Thanks

[@rolandotillit2867]

Looking @4:07 The light is shoiwing you you have a greater effective cross sectional area on the center of the cylinder side of the bowl. The bowl on the cylinder wall side seems to have a smaller effective cross sectional area. You can see the tight reflection and next to it a sharp contrast with much less light, that's telling me there's no airflow in that region, it's effectively a dead zone. The only path for air to travel is on the far side, basically just follows the light. That's why it's fast compared to the other side, smaller CSA more air speed.

[@joecraine4660]

I have a slightly used set of the Ford original GT-40 replacement valves that I removed from a set of heads and set on the shelf for about 35 years. They were sold through the Muscle Parts program at Ford, and I installed them in a pair of 351 heads, but decided to go with the 1.940" valve instead. They do have the 30* intake seat, but the exhaust has a 30* back cut. Interesting to pull them out and look at them after all this time.

[@servediocylinderheads]

@@joecraine4660 Good info. Thanks

[@dondotterer24]

Thanks Charlie. And I am a GM guy. I was at my buddy's shop today and his has some Ford Profiler Chad Spiers heads in to freshen up. They look awesome and have a Burr finish on the intake ports. Small cubic inch engine going in a asfalt circle track modified of all things.

[@servediocylinderheads]

@@dondotterer24 Chad does really nice work. Thanks

[@dondotterer24]

@servediocylinderheads Yes I plan on buying his heads. What he recommends for my drag and drive 69 camaro SBC 421. I think I want a Burr finish also.

[@rolandotillit2867]

We said good at the same time at the start of the video. LOL!

[@hotrodray6802]

🔔😎 YeeeeHaaaaw!!!

[@servediocylinderheads]

Thanks!

[@taylormayberry4826]

I thought I’ve seen them castings listed on Robert pond’s website but that was a few years ago. It stuck out to me because he’s a FE guy

[@No1414body]

Looks closer to 480hp getting good but how much can you do in these thin castings

[@servediocylinderheads]

@No1414body Workin on it! In about 7 cuts now....getting there.

[@No1414body]

@servediocylinderheads if you can get to 245 it should do 500

[@servediocylinderheads]

@@No1414body Stay tuned!

[@ElvinLeadfoot]

The Brides of Chucky are turning into Beauty Queens:)

[@servediocylinderheads]

@@ElvinLeadfoot Still pretty ugly!

[@bcbloc02]

The quality of the unfinished casting sure screams Ford themselves didn’t do it.

[@servediocylinderheads]

You may be right. Thanks

[@rolandotillit2867]

What is the runner + port length? From the plenum to the valve.

[@servediocylinderheads]

@@rolandotillit2867 I haven't measured it. I need to do that on a stocker and modified.

[@rolandotillit2867]

I'm just throwing out a crazy idea from left field, only for entertainment purposes. Recessing the guide boss at the center would effectively give you 2 fins.

[@rolandotillit2867]

In nerd talk, that thing on the floor is called a fillet. You can obviously call it whatever you want, it's your channel, just being the ackshually guy.

[@servediocylinderheads]

@@rolandotillit2867 I will never call it a fillet. Ever.

[@garykarenmcgruther6386]

This cylinders looking to be a headache I see. Flow balls and the flag is your friends

[@servediocylinderheads]

@@garykarenmcgruther6386 No doubt! Casting thickness and core shift is bad.