Yes sir I did pretty much the same as you, did alil the first round, watched some good videos got better tools, went back and did a better port/polish and valve job. I did other heads and intakes before, was my first LS 706 heads for my 5.3. I got a LQ9 that I'm gonna do some 799s for next.
@@RAWRMotorsports ya need too on LS heads especially exhaust valves get pitted. I did mine the first round and 2 on each head still had slight leakage. So I went back and lapped the shit out of em like you lol.
As a general rule, or atleast how i was instructed by probably the best port/polish guy in motorsports, you polish exhaust and dimple or rough the intake sides. This is because of how air/fuel mix and react to smooth surfaces. The roughing or dimpling causes a micro-thin layer of air in the pockets/dimpling and allows for better flow on intake. Direct injection.. smooth em, any other application that sprays port or pre-port, rough em.
Looks good, should have picked up some flow. Always put a thread sealer on the intake rocker bolt when you break through removing the rocker bolt lump. Even though you wouldn’t think it could oil will pull down past the threads via engine vacuum and smoke. You definitely didn’t hurt anything, it looks pretty smooth! 👍😎
Thank you sir 👍.. Yea I put a fair amount of blue locktite gel on all the rocker bolts that broke through .. Mabey it wont all melt out but Ive smoke tested it, there is like ZERO smoke out of the exhaust and there is basically zero blowby out of the crankcase vent .. So Mabey we won this build for now anyway 😂
I know it’s been a year ago since you made this vid. I watched Phong do the way he laps valves and he puts a 3/16 fuel line about 4” or 5” long one one the V stem and puts the fuel line in the drill. Yea it sounds funny but dude!! It works amazingly. I also sprayed oil/lube on the valve stem while lapping. Also put a bolt in the place “if one” the use JB “metal” weld to fill the hole. Then sand smooth. Great work maaan!! I miss my kids being small like yours. Mine now are between 22 and 16🤣🤦🏻♂️ They grow up too fast!!💪🏼🔥🔥🔥🤣❤️🙏🏻
I have ported many different heads over the years and currently doing a set of 317s for my LQ9. I have ported mine just as you have and think it’s going to work well. Just curious if you can tell of any improvements in power gains at higher RPM and any losses in power at lower RPMs ? Nice work. @darylvoorhees
It's hard to tell because I changed so many things at the same time on this build.. it runs real good over 3500 .. it needs gears cause I'm running 33" tires with 3.73s
Would have done only one thing different but it's personal preference. I like to put rubber tube between valve stem and drill, reduced the speed on drill and changed direction every few rotations. I've ended up with rings of death between concentric reducer on valve and the seat when lapping in this fashion.
@@RAWRMotorsports People in general can be such haters. Inspirational people are few and far between. I get the same slack when I do what I do. People told me that coating pistons is waste of time. But I've managed to triple the life of all our race bikes. Likewise with the Two Honda CRX on my channel. Both have full Cerakote treatment on engine internals and both run away from sports cars consistently and reliably with none of the symptoms the nay slayers prescribed. Proof is in the pudding.... Not as assumption from the sofa😂
I seen a comment in the Texas speed video about up load of the video doing a AFM DOD delete. I want to do it on my 2012 I’m kinda nervous about it. Especially after reading the comments in there video saying how they made a bunch of extra work for themselves
@@RAWRMotorsports would you say there particular package is the most reliable. Technically my truck hasn’t shown any signs of failure. No ticking still smooth but I can’t afford a failure. So I’m trying to figure out what i should do as a preventative measure.
@@RAWRMotorsports man ever since i found out about this AFM DOD issue especially in the “newer” pickups I have been regretting purchasing this 2012 Sierra. It’s considered a 4th generation so hopefully I can get it deleted properly. I would consider myself mechanically inclined I have built a couple 4 wheelers a couple crotch rockets. And fixed plenty of regular cars but I have never went this deep into a motor. I was planning on learning about the 5.3L on my 2001 but the 2012 is my daily driver to and from work so I have to do that truck first. This has me so nervous I’m considering selling the 2012 it is in decent shape and fairly low mileage 137k and no current issues as far as the motor is concerned. BUT when I did the last oil change the old was as BLACK and only about 4 quarts came out. I did take the oil change to the end of the % counter I normally do it every 3k miles. But this oil change I didn’t have the cash at that moment to get the oil and filter. I didn’t think it would be that big a deal especially since the % was at 30.
Comments about leaky valves you need a valve job plain and simple!! Using a drill and grinding material off is doing you more harm than good Now your other angles if they were any good are no longer sealing. Before tfhe "but it runs fine" comments start. Plus youre missing out on power by skipping one.
But yes if I did it again I would pay for a performance valve job & lightly lap in .. a valve job alone is not enough even brand new assembled heads need disassembled and lapped in
@@RAWRMotorsports yeah 4.8s like to shine in the high rpm range. As far as the bump I was thinking just take a lil off the top lol. Not completely shaved and raise the roof on the exhaust (gasket match). I'm gonna try my first port job soon. Hoping for good results.
the guide does not need as much support in the port its strength comes from going all the way through the head , and it has very little side load on the port side just up and down friction imo.. some extreme race ports completely get rid of the guide in the port area so the air only has to go around the small valve stem
@@RAWRMotorsports from our angle it’s not the support problem,it literally looks like you took out some of the guide, on camera it doesn’t even look like a valve would go in it looks like it caved in on it’s self
Yeah i kinda wish I woulda atleast had a 3 angle put on em .. but I was on a budget ...might get another set of heads and go through em , port , get valve job, mabey some lightweight valves and swap em out with the correct headgasket this time instead of ls9 gaskets ... need some 4.000 x .040 gaskets n get the quench right / reduce the crevice losses
