Tninl98

Well i was finally able to pick up my cylinder heads after dropping them off a couple weeks ago to have them ported at a local shop here in Houston. We left the exhaust port's stock due to trying to keep my build in budget. A few people have told me i could take a dremmel and lightly polish the sides of the ports, just where it meets the headers, but wasn't sure if it was worth the trouble or if it could possibly hurt. Was just looking for any advice, thanks.

Oh and i decided to add a couple pic's mainly because I'm proud of them

Glenn B

iTrader: (5)

Your heads look good.
Also, Im not a head porter, and I think you should probably leave the heads as they are.
One thing you could do that wouldnt cause any damage, is have a cam specced out for your build and let the person who specs your cam know you have the Intake ported but the exhaust was left alone. They can tailor your cam to work with that combo by optimizing the valve events.
Hope this helps.
--Glenn

Tninl98

Thanks for the input Glenn, but i can assure you the cam and rest of the motor was all taken in consideration with the machinist. The heads are going on a 6.0 iron block bored .060 over with forged internals. Cam is 238/242, lift .605/.610 on a 112 LSA. Hoping to see 450rwhp since i am still working with ls6 intake.

supersick99z

iTrader: (66)

It would be worth the time and probably a little bit of power if you finished porting the exhaust ports out

chrs1313

iTrader: (24)

wow forged interals and bored over with unported exhaust...

did someone run out of money???ha just kidding man

seems like a different path than most take...

Tninl98

Hahaha yes budget was huge on this build, i didnt even plan on having the heads ported but a buddy of mine said he would do a valve job, port the intake side and assemble for $350 so couldnt pass that up. I do plan on putting a solid shot on the motor though so those internals wont all go to waste.

printmanjackson

iTrader: (1)

you should have had the exhaust ported instead of the intake.

batboy

iTrader: (6)

Yeah, the exhaust ports are weaker than the intake ports. Think I'd mow some lawns or pickup aluminum cans or something to get a little more cash, then do the exhaust ports too.

outkast6991

iTrader: (34)

well with stock runners on both sides and a smaller cam than yours i'm at 430/420 on a stock 6.0 bottom end. i'd say with your setup you should seee 450rwhp. my heads are vj and bowl work only still needs the tune finished up. i'm hoping for 440hp

printmanjackson

iTrader: (1)

^^ but your using stock runners on both ends and a good valve job with bowl work. I'm not sure how well it will perform with just the intake ported, it's like half way doing something. It's not a secret that the LS1 responds to getting the exhaust out.

OP, who did the porting work? I'm currious as to who would just port the intakes.

Damian

iTrader: (89)

Intake work looks good. DO NOT take a damn dremel to the heads.

I would spec your cam accordingly to the heads for best results. Assuming that you have great cfm flow coming into the intake, you need to spec a cam that has a longer exhaust duration to evacuate it back out.

Tninl98

It was done from a friend like I mentioned. I had them done on the side as a favor, I went to just have him do a good valve job but for the extra 200 dollars i couldn't pass it up. By looking at the pics you can see he obviously did some work on the chambers on the exhaust, but I know that's not close to being ported. When finishing them he said he did similar heads with a 580ish lift cam and it put down 423rwhp so I'm hoping theses will get me to my goal at least. He mostly does not work with lsx motors, typically works with bbc.

bigfatls6

iTrader: (34)

if you cant post who did them pm me the info I might want him to do my as cast dart heads.