one fast zo6

iTrader: (490)

very nice work.

garygnu

you can spec a great cam to match the flow.

transam150

iTrader: (4)

Hey man that is awesome! where did you get the carbide tips? Did you use like a dremmel tool or what? got some 317 i wanna try my hand at.

Mart00SS

iTrader: (19)

This is what I used (mini die grinder). Its pneumatic so you need a decent compressor. The bits are sold at different places, i would google it, I dont think im supposed to put links in here. I also got a porting kit with sanding rolls etc... Search here for home porting or DIY porting, there is some good info.

Here is what the carbide bits and sanding rolls look like.

garygnu

great work you can make money porting heads.

Wnts2Go10O

iTrader: (12)

tthe only lil bit i dont like is the near mirror polish on the exhaust.

Mart00SS

iTrader: (19)

Why? All the research I had done eveyone was polishing the exahust to keep carbon buildup to a minimum. The intake should never be polished, for fuel atomization. I finished the intake with 80grit sanding rolls, some would go to 120grit

bigboykilroy

iTrader: (48)

I'm all for CNC porting. But I have to hand it to you, you did a VERY nice job hand porting, and your flow numbers are very nice for the work that you did.
My hatt is off to you my friend! Enjoy some new found HP!

Mart00SS

iTrader: (19)

Well thank you sir

BlackNiteWS6

iTrader: (2)

Contrads they look really good. And you didn't just hog them out. Plus your flow numbers
are pretty good. I had similar flowing 241's with a Comp 216/220 114lsa cam and went 11.78 @ 116 mph in a full weight WS6 A4 and a Vig.3600 plus the usual bolt ons.
Best of luck and very nice. You don't always need 300+cfm and a big cam to run well into
the 11's.

masterz28

iTrader: (8)

looks awesome, time well spent

Pony Exp.305

iTrader: (6)

Good write up but I am not familiar with this. I do have 853 heads out from 1998 Trans Am. I want to have porting and polishing on the 853 heads. I can't afford to pay new +$1000.
I ll post with pixes here.

01ssreda4

iTrader: (96)

Great job, but 35 hours, jeez. That takes a lot of patience.

ausls1

absolutely awesome job, thanks for the link to this page, fantastic work, got to spend the time to get the results and this was a job that definatly has the good results, yeh i was told not to really touch the intake side due to what you mentioned with the atomisation, just to take the rough edges off rather than smooth the intake ports, but to do what you've done with the exhaust ports as you obviously want the exhaust gases to escape as quick as possible.

rooster18

iTrader: (2)

looks good mAN, i like it!

thunderstruck507

iTrader: (18)

great work, love seeing when people take the bull by the horns and do their own heads

I will be working over my 799s in the future

Bo White

iTrader: (59)

Take a pick and knock that last thread thats hanging on the pedistal bolt hole out. Judging by the pix the port looks 212-215cc in size. Everything esle looks good for a home portjob.

hammertime

iTrader: (1)

Man, I really need to get off the fence and dive into my heads. I picked up some 241 heads and 5.3 heads to play with a long time ago, but I keep wavering. There's no way I can afford any of the aftermarket castings and the rest of the mods I need, so I should just go for it.

Can't wait to see how these perform for you. Congrats on a job well done!

Mart00SS

iTrader: (19)

Thanks bud, I actually used the link in your sig as some of the research and good info I found on here before I got started on mine. I've been at a stand still with getting these on the new motor im assembling (funds) but that motor should be together soon and I will post with updates.

hammertime

iTrader: (1)

Well, I reckon you won't mind that I added this thread to that post.

Good luck with your combo!