[VetteDr]

Average is 4.25" tapers to 2.85" and average runner length is 5.8"
Heads are min CS OF 2.95" he wants to make 800HP I think we should be close.

Seems like a Huge avg for a head with a MCSA of only 2.95 , NO ?? or is it 4.25 at the plunum opening down to a 2.85" ?

 

[w5dart66]

Seems like a Huge avg for a head with a MCSA of only 2.95 , NO ?? or is it 4.25 at the plunum opening down to a 2.85" ?

Yes that's the taper and I like intake to be just tick smaller at head transition.

By ave. that was ave. of all 8 runners.

 

[w5dart66]

Just curious...how many inches is the engine and how many rpm?

Has been on 392 CI TO 422 CI 7800-8500.

On my car it's 412 CI car is 2860lbs ready to go down track has been 5.71 at 123 mph with poor 60' 1.34' car has been 1.29 in 60' with smaller engine.

 

[fatman]

The one above is Ritter "420" they are not as big to start as a real mopar "420"

I will check I have Ritter that is as cast I need to start on.

Here is large port "420" for my w8 engine it's in the 4.7-4.8" range with just little weld on out side and this is real mopar intake.

There's a "step" in the transition from the plenum floor to the runner floor. Do you blend this out or leave it there? (looks like you leave it, but that could just be the pics or the grind marks)

 

[w5dart66]

They are fuel dams cast into intake I knock them down little bit would love to have time and money to test fuel dam changes I think they are good tuning tool.

 

[w5dart66]

W8 15* 45cc chamber.

 

[Vinny V]

W8 15* 45cc chamber.

Looks nice.valve job is a little ruffled.gona take a bunch of lapping compound.

 

[w5dart66]

Yes and ports a tic small ;-)

 

[Lobes]

W8 15* 45cc chamber.

Looks good! Z-level .030"?

 

[w5dart66]

I don't know will have to ask CNC guy. I just grind by hand then have it digitized wish I had the $$$$ and smarts to have 5 axis CNC and or the business to support it.

Small block mopar hard group to sell to

 

[Lobes]

I don't know will have to ask CNC guy. I just grind by hand then have it digitized wish I had the $$$$ and smarts to have 5 axis CNC and or the business to support it.

Small block mopar hard group to sell to

I hear that! Best of luck, it does look good!!!

 

[Chad Speier]

60hrs in a set of OEM Ford 3.8's!

 

[adiabatic]

Chad can you tell me the reason why you don't use both intake ports going to each individual intake valves on that OEM ford 3.8 i see a lot of airflow lost not using both intake ports per pot or is it to the customer request i am just wondering

Steve

 

[584Hejda]

I did a search for porting tools, could not find any pictures. Can you guy's post some pic's, what are you using for the long and tight intake runners and where to buy ?

Thanks

 

[*BOSSMAN*]

I did a search for porting tools, could not find any pictures. Can you guy's post some pic's, what are you using for the long and tight intake runners and where to buy ?

Thanks

I have two racks of carbide burrs of various shapes and sizes. Here is one and I got them from here. http://www.buckeyecarbide.com/

 

[speedtigger]

I have two racks of carbide burrs of various shapes and sizes. Here is one and I got them from here. http://www.buckeyecarbide.com/

That is a good looking mix. I like an extra large diameter bur for bowl work and double long rounded heads for wall straightening.

 

[tempname]

The large aluminum fluted burrs have always frightened me. I end up using the ones with the small flutes. I figured the large flutes would be more aggressive and I would exceed my talent level even further.

 

[Chris Uratchko]

I like Buckeye Carbide.... nice quality. Sharp. Strong. When you can 'lay into' a 6" extended carbide.... it's a good one.

 

[stuska1]

The large aluminum fluted burrs have always frightened me. I end up using the ones with the small flutes. I figured the large flutes would be more aggressive and I would exceed my talent level even further.

I like the big gnarly ones and I like to lean into them. lol:smt110

 

[tempname]

I like the big gnarly ones and I like to lean into them. lol:smt110

Making chips!