studderin

iTrader: (28)

Heres a set of 241s I did, your limited on that casting. But the 243s you can do some more guild boattaiing. Check the guildes after, I hear they can tighten up and move when you fully blend the casting support out.
https://ls1tech.com/forums/generatio...highlight=port

I have a dyno with those hand ported heads, with stock valves and valvejob. And the stock un touched 241s on my car now.

regency

iTrader: (15)

thats pretty much what mine look like now, but im still smoothing them at the moment. also behind the guide i didnt leave the flat spot

chrs1313

iTrader: (24)

and get a new camera..those pictures are blurry as hell lol...

66deuce

iTrader: (1)

a good valve job is the most important thing you can do..find somebody that know's LS stuff...

Beaflag VonRathburg

iTrader: (176)

It's really hard to take pictures of cylinder heads. You can't do it with a flash so you have to set the camera on something. It took me at least an hour to get some good pictures of a set of heads I have.

angel71rs

Port work looks good so far. I think every hot rodder should try home porting at least once. I've never done a set of LS1s, but have ported old school heads of various makes, and the short side radius of the intake port always requires extreme care. A mistake here will cause a dip that really hurts flow. I port this area by feel; I use my finger to feel where the ridges/high spots are and use a cutter or roll to lightly touch them up, always keep the tool moving and vary the angle.

I also like to use a small light to shine light down the opposite side of the port instead of having the light blocked by the tool. Also, I like to plug the valve guides with rolled up paper towel pieces to keep the crud out of there.

RyanSws6

iTrader: (72)

Bowl work, blending and smoothing is critical. So Best is to visualize the air flow. Still a little work under the guide. I've done my own heads LT and LS, my LTs flowed 255 @ .550 intake and 190 @ .550 exh. Overall they are ok #s. My LS heads are done but need to get the valves installed and flowed. This time #s should be more...

regency

iTrader: (15)

yea thats not my camera, i know it sucks..lol mine took the first one in the thread of the casting # but its broken so i cant get good pics