Pics of my new TFS CNC TW-R 225cc heads

[blykins]

I'm assembling a 445ci Windsor stroker for myself and just received my cylinder heads yesterday. I ordered these bare and had them shipped to Joe Craine for some head work. These are CNC ported from the factory, but Joe was able to squeeze a few more cfm out of them in the areas that would help me the most. I also had him mill them down to get 60cc chambers and clean up the oil drainback holes.

These flow 335/263 at my .640" valve lift (interpolated from .600" and .650" lift numbers). They flow 343 @ .700". At higher lifts, exhaust flow is 78% of the intake flow.

I will assemble these with stiffer Comp dual springs (with titanium retainers) to help keep the valves where they're supposed to be with the hydraulic roller cam.

Keith Craft is doing the Dart Sportsman block for me and Harold Brookshire (used to work for Ultradyne cams and also designed the Voodoo cam series for Lunati) is grinding me a camshaft.

[Poolw]

Blykins, that sound like a big HP motor. How much HP are you targeting to get? What is the bore and stroke? How did you decide to go with a 445 ci? Are you going to use an aluminum or iron block? I'm sure Keith will do a great job for you.

[blykins]

I've bought a machined block from Keith before....you're right, they do excellent work. The Dart Sportsman block is an iron block with 4 bolt splayed caps on the inside caps.

I'm going with a 4.155" bore and a 4.100" stroke. I wanted to keep the cubes up, but decided to stop with a 4.100" stroke due to the easy availability of pistons/rods/cranks.

I'm aiming for around 625-635hp, but with a little more focus on lower/mid range power/torque for a street car.

[RACER X #99]

You will have no problem getting 625-650-HP with your setup. If you ever take it to the track make sure you put some race gas in it. I don't care what they say about big cams bleeding off compression . That may work on the street but when you are cruising along at 6,500 you are packing a lot of fuel and air into those cylinders.

My Dart 408 with out of the box CNC AFR 205's made 615 on the engine Dyno and 475 RWHP on a Mustang Dyno

Your gonna embarras alot of guys with the "correct engine"

[Rick Parker]

That's a long way from your "correct" 427 FE! Very nice piece........go thump some heads.

[rooster]

Blykins, What are you going to put it in?
Russ

[blykins]

Russ, it will go in a later model Mustang...probably a Fox body.