[terrible_buddhist]

I am trying to match them up with my intake gasket and it seems I will need to have the intake milled to match the head...BUT...I am just curious if any one can tell me anything about these heads. I had never heard of Gianino, but it seems he did some cool stuff:

Aluminum GM Bowtie rectangular port heads # 14044861. 380 CC runners, 106 CC open chambers, angle milled .125.

 

[Oldsquirt]

..... it seems I will need to have the intake milled to match the head...

I know nothing about the heads, but if the above quote is in reference to my comment in your other thread, I think you misunderstood. From the looks of the pictures you posted, the intake may have already been milled too far. Milling the intake faces of the manifold cause it to sit lower. One soulution is to use the 1/8" thick intake gaskets, which may not be enough to raise it sufficiently. The other is to replace the manifold(or borrow one for a test fit).

You should post pics of the manifold's intake surfaces(if they still have the gasket imprinted on them) either here or in you gasket thread in Jets.

 

[scott foxwell]

Sam (I'm guessing it's him) Gianino's been around for long time. My advice is to have those heads thoroughly inspected, and who ever took a Scotchbright wheel to the decks made a mess out of them...you need to have them re-surfaced at a minimum. Those heads look tired, but pics aren't always accurate.
With that intake port, I hope they're going on a BIG engine and I'd check those chambers for 106cc...they look bigger. Again, hard to say in a pic.
JMO.
ETA: If they've been angle milled, there's going to be some material missing from the intake surfce of the head (to get teh deck/intake surface back to 90*) so it's likely that you'll need thicker intake gaskets to start with. If the intake surface on the head wasn't corrected, you'll have to mill either the head or the intake manifold to fit correctly. From the second pic, the intake flange on the head looks thin, so my guess is that it was milled.

 

[terrible_buddhist]

ya, I have to say, I don't really get the concept of angle milling.

I did have the heads inspected before we installed them. Might be something to do again in the off-season though...maybe with some roller rockers too

They are on a 468 twin turbo Jet. I have to say, I was REAL happy with the performance until the gasket went

 

[Warp Speed]

You REALLY NEED to have them surfaced, especialy if you have already lost a head gasket once. You can see the heads have been grooved from an improper (non pre-flattened ring) head gasket being used. That's how the pictures appear anyway.
Also, be real careful ( read...don't do it) when cleaning the deck surfaces with a scotchbrite wheel. Pretty easy to mess them up a couple thou not even trying!!

 

[havasubyou]

i have a little info w-port bowtie heads came factory with 105cc chambers and 380cc ports the exhaust ports are raised .750 so long studs must be used on exh ports as you can see in your pics,
big deal here is intake ports are raised .200 this is why your manifold is giving you problems,and if they were angle milled well this even throws a little more into the mix.
most likely chambers were machined to match bore size and piston dome or comp issues then milled to get compression where it needed to be looking at the pushrod holes i would venture to say they are angle milled.the very min get them cc'd and freshened up with a clean up pass on that surface i can see the o-ring mark on the surface i would also use the intake port bolts if your block is machined for them if not add them, reher morrison has the for sale and you can install them yourself and save some dollars.

here is what i would do call gianino racing engines @ this may be old number but i will give it to you anyway 313-280-0240 4812 leafdale blvd royal oaks mi 48073 give him info off the heads,there should be a job number on the and get his info from the job number

his name is sam gianino and is a top notch big name engine builder.

 

[terrible_buddhist]

You REALLY NEED to have them surfaced, especialy if you have already lost a head gasket once. You can see the heads have been grooved from an improper (non pre-flattened ring) head gasket being used. That's how the pictures appear anyway.
Also, be real careful ( read...don't do it) when cleaning the deck surfaces with a scotchbrite wheel. Pretty easy to mess them up a couple thou not even trying!!

have not lost a head gasket...I lost the intake gasket.

 

[Oldsquirt]

Here's a pic of the manifold gasket showing where it pushed out below water port and the very narrow sealing area at corner of port. The latter would be at least partially explained if the ports were .200" higher than stock as havasubyou stated.

Just a correction. According to GMPP catalog, the intakes are only .100" higher than stock

 

[tony garrett]

you need to fix your intake manifold by the photo you are tight up top and dont have any crush on bottom only fix is a machine shop to mill your manifold to fit correctly also those heads need surfacing bad also i would have the harden steel washer sleeves installed on all head bolt holes

 

[WETTE VETTE]

I can provide a little history that may or may not be of value. Gianino Racing Engines became Gianino / Lukovich Racing at some point then eventually became Lukovich Racing. Basically John Lukovich thru time bought out Gianino Racing. I bought my block and rotator from Lukovich Racing in 2003 and they had been independant without Sam for some time. In other words there is a good chance those heads have been around the block a time or tow throughout their life as they are probably several, if not 10+ years old. Recently I called Lukovich and was informed that they were closing their doors for good. I will say Gianino and Lukovich both had a great reputation on the drag strip for making big power and reliable combos. That being said I agree with others on this post that those heads need some TLC before running them. Hope this helps in some way.

Craig

 

[scott foxwell]

ya, I have to say, I don't really get the concept of angle milling.

I did have the heads inspected before we installed them. Might be something to do again in the off-season though...maybe with some roller rockers too

They are on a 468 twin turbo Jet. I have to say, I was REAL happy with the performance until the gasket went

Angle milling is done for one (or both) of two reasons. 1) to increse compression...you can take more out of the combustion chamber by milling the heads on an angle than you can flat, and 2) you can roll the valve angle over to allow for a straighter shot for the port into the cylinder. Angle milling is a PITA, but can be worth the work if you're limited to what heads you can run. Head bolt holes have to be correctred for the new angle, head bolt bosses have to be re-spot faced, pushrod clearances have to be checked, the intake surfce has to be corrected and the intake manifold has to be fit. It's a lot fo work.

 

[Warp Speed]

have not lost a head gasket...I lost the intake gasket.

Sorry.......wrong gasket!!! sphss

 

[terrible_buddhist]

one dead shop vac later, I finally came up with the idea of using the oil pump to get most of the water out of the engine.

Too bad I blocked the wrong line the first time and there was a pile of melted marshmallow in my bilge

Got some new oil in it now...trying to circulate it real good...next week we will start checking out the intake and seeing if we need to mill it (which I am guessing we all know the answer to that already)

 

[Six Pack]

861 heads

The 861 heads are the second generation BB heads.They were the Pro Stock replacements for the 074 & 077 & L-88 alum heads. They were designed to be worked on by a professional head porter. Gianino was one of the early players in Pro Stock, known for quality work. Angle milling is a very common machining operation. You need to get them to a shop that can accurately check to see if the intake face angle is 90 degrees to the deck angle. A .125 angle cut changes the angle approx. one degree. It will be tight at the bottom of the port and loose by about .045-.060 at the top of the port if the intake face is not corrected. When you angle mill & make the proper correction to the intake face you will usually have to use a .125 intake gasket to keep the manifold "Up" in line with the ports & bolt holes. You should also check the head bolt spot faces to see if they have the 1 deg angle corrected to be flat with the head surface. it's not good to pull bolts or studs at an angle. One other thing to check is how the intake fits the end rails of the block. If they are too tight they can hold the intake up and the sides will leak or blow out. The picture shows the bottom side of the water port blown down into the lifter valley area. How much block pressure do you have? I have most of my jet boat customers put on a bypass regualtor to keep the water pressure from being excessive. Most automotive engines are only designed to take around 18-20 lbs pressure. Most jet pumps get engine water from bowl pressure & most bowl pressures greatly exceed the 18-20 lbs auto engines are designed for. That could be another area to explore to cure your problem.
Good luck,
Six Pack
A.S.