Porting Cylinder Heads Really That Easy!?

[shawnc]

Good to see people still wanting to DIY porting. There is always gains to make and not everyone has a high dollar budget for aftermarket heads. And even then aftermarket cylinder heads still needs to be worked. But so far your work looks good. For more valuable info check out Dave Vizard vids and HeadFlowINC for pointers. Keep porting

[KCDW]

Went down this same road 20 years ago man. My advice is to put the burrs down. The amount of time and energy you are going to spend isn't going to yield what a set of as cast modern aluminum can do. You are going to have more time=money in those heads than if you bought new and you won't gain half of what the new will get you. Back in the day when it was all said and done I had almost 1500 dollars in a set 69' 351w heads. You can spend $1000 now and upgrade to aluminum and have better flow out of the box.

[noexcuseracing]

It definitely helps to an extent, u can screw them up too if your not careful

[BareRoseGarage]

This is what separates the "Build A Racers" from the "Buy A besides, all it takes away from in your life is all those lost Seinfeld episodes on the TV you didn't waste your time watching.

[firepinto]

I would do it, if I had aluminum heads. I got no time for steel grinding. Lol are your hands numb yet?

[lucascb]

Actually, doing the work isn't that bad, but understanding why you modify and where that's the hard part. Especially if you don't have a bench.

[fsu]

I wouldn’t touch the combustion chamber as it could affect my torque but that’s my personal preference. Otherwise I do everything you do and an engine always loves more air!!

[GRRCapri]

Takes experience & yes some common sense to know how much and where to remove material… port dynamics, runner length, RPM, where taking material REDUCES flow are all things to consider.

A good multi angle Valve job attributes the most flow increases On otherwise factory cylinder head

[HeadFlowInc]

It takes way longer than most people are willing to pay for. Sweat equity for the Win! 👍👍👍

[markalcala]

That's funny, my phone was in the truck today but we were talking about this exact subject

[eazyrider]

On the inlets work the long walls only. Leave the short side alone.
At the valve stem guide make a pointy tail towards the inlet.
Do not remove that hump, Thats part of your swirl pattern also leave the roof alone. Then when you think you have done them all you have to balance them all out so they all hold the same volume= Port match. Then theres the exhaust ports basicly just the tail. Honestly, Leave it to the pro's

[evankrupitzer]

If your car is having any trouble at all just make it so its.... not? 😂😂

[karljay]

You aren't wrong! The basics are actually pretty straight forward. Past that, "dead zones" where you push the air away from something. it's like a "wing window" in a vintage car. Think of air like a fluid.

[beans]

yep sounds right to me, just a lil common sense goes a long way and if u dont have common sense u could pay someone to do it which many do I wonder

[bigdogsportingtonyb]

This is not good advice. Just try it and see what happens. Gaining more cfm, higher discharge coefficient charge and the right velocity takes A LOT OF KNOWLEDGE, EXPERIENCE AND THE RIGHT TOOLS. Please people don't go messing up a good set of heads. It's definitely not easy

[bobirving]

Haha. Content is content.
Here’s my 2 cents.
You’ll probably get tiny gains.
Some proper porting is common sense, some is counterintuitive.
Your valve job might give more gains than the grinding 😆

Check BainRacing, Darin Morgan, Eric Weingartner, David Visard, Charles Servecido.