That's right, it takes a little time to work the bowls and pockets. The main thing I concentrated on was chopping down the excess material around the guides on the intake and exhaust side. I also did quite a bit of flattening to the port roof.

 

The reason it took me so long is that is it was my first time. Trust me Xtreme....ask John (fastntenn), if its your first time don't think of only taking 25 hours. Take your time as its better to remove less than too much. Take some off the necessary areas and make some photos ask post um. Guys like John and maybe Phil and Lloyd will let you know where you could remove more from. I did mine...had them look at it then removed more. Kinda like double work. But better than as Phil would say "turning them into door stops." Like I said earlier....don't worry about flow numbers, and go with some 2.00 and 1.56 valves respectively if your not gonna do some heavy chamber work.

 

Yea since that was my first porting project it wasn't about seeing how fast I could do it. There are plenty of guys around here that do quick jobs on their cars, and you can tell because there whole car is rigged. The main point is to take your time, and do your homework on it.

 

I think mine didnt take that long because I got really good equipment. it only took me 10min to port match 1 1/2 inches back. I purchased this cool bits, some good stones, lots of cartrage rolls, extentions etc. makes work tons better, and for actual tools i bought a dremel to work the exaust side with the flex head to get in hard places, standard air die grinder, and a super powered eletric grinder. Spent more on tools then what it would cost to have professionally but I am not one to pass up a learning experence. Im not sure how long it took for my first heads but they where practice anyhow. If you want to get good ideas vist head porter sites and see what they do and copy. thats what I did and thats how i learned, plus side tips from a pro porter wasnt to bad either.

 

ditto

 

Anybody have dyno #'s with their home ported heads? Im very interested in doing this myself as well

 

I've helped out a few guys do their own LT1 heads with good success. http://members.***.net/gmarengo/ Click on the DIY head porting. This should be a good starting point for ya.

Dyno/track times are in the sig for my DIY heads. FYI those numbers below are with the stock throttle body, maxing out the stock injectors (stock FPR) and shorty headers through the mufflers with only about 40 minutes worth of tuning.

Mike Hankel

 

a buddy of mine went 117.5 with a 236/242 ex cam and his home ported heads (383). He was battling a miss and his tune was still off, so there is a lot more left. Not too bad in my book.

Faded

 

Sorry to hijack the thread but if you need a pair of LT1 Aluminums to work on, i got a pair for sale.

Zach

 

zach: how much for the heads shipped to 60630? (I assume they're stock and untouched)

 

I ported the stock heads on my 93, and since have ported a few sets for freinds. If you plan out your work and are very dilligent with being exact youcan get very good results. there are several sites that address the best mods for the homeporter to port a set of Small Block Chevy heads. I used some 6 inch shank bits for alum in a tapered cone and a ball shape. I also used about 1 and a half kits of the paper rolls from Summit.

On a 355 with a cc305 cam , full exhaust, M/T sportsman Pros,and 3000 stall we trapped regularly at 112 to 113 in a car that weighed 3750 with me in it.

I had access to a valve grinding machine , so I was able to save that cost as well.