Elite_Hot_Rod

Lets hear it,

Has anyone installed their Holley intake manifold yet? Any problems? Any tricks?

Installed mine this weekend and it leaks air. Thought it was the bottom cover plate screw heads sticking out to far holding the manifold back from seating all the way. Ground down some of the head equally on all screws, still leaked. Looked at the gasket between the head and the manifold and noticed small but deep indentations in the gasket. Determined that was caused by the washers on the head bolts so we ground the 6 inner ones down just enough to sit just past flush with the head,still leaked. First thing in the morning we are going to check the manifold mating surfaces for flatness and may have to call Holley. Anybody had any problems so far? Thanks,

Mark

WILWAXU

iTrader: (6)

Anyone? <img border="0" title="" alt="[Wink]" src="gr_images/icons/wink.gif" />

Elite_Hot_Rod

Well,

I talked to Chris at Holley Tech this morning, they of course had never heard of this but he did say they would get back to me. Damned if I wasn't surprised when he called back this afternoon, seems Holley left out one vital bit of information on their installation instructions,gonna give it a shot Saturday morning. I already have a base line dyno run for both the LS1 and the LS6 manifolds so we will have a real good idea of what the Holley actually does on Saturday. Stay tuned.

Mark

Y2K Camaro SS

Well....What was the one piece of vital information???????????????????????

The suspense is killing me.

GeorgeC

I'm really anxious to see some results from this intake...

Elite_Hot_Rod

I wasn't going to say anything until after we find out if the fix Holley gave us actually works or not. The one little tid bit of info they left out of the instructions was "when installing this manifold you must change out the valley pan bolts for ones with low profile heads or countersink the bolt holes and install flush mounted screws". Holley engineering said the stock bolt heads will hold the manifold off seating by .125". With the manifold gaskets installed and the lower corners radiused by the porters there was alot less gap than that with no gap visable at all,trust me. So Saturday we are going to pull the LS1 manifold back off, change out the stock valley pan bolts with bolts having low profile heads, throw the manifold on and see what happens. Cross your fingers,we should have some good numbers on gains for the manifold on Saturday.

Go Texas Tech

iTrader: (10)

Good info. I'm still waiting for the Holley intake manifold and starting to hate GPs. <img border="0" title="" alt="[Mad]" src="gr_images/icons/mad.gif" /> I could have paid to have the Holley in my hands over 1 month ago.

The plastic LS6 intake is starting to sound good now especially since ls1 edit fixed my !egr. <img border="0" title="" alt="[Smile]" src="gr_stretch.gif" />

jmX

Seems like they should have included those bolts with the intake. Thats kinda stupid.

Elite_Hot_Rod

Teddy,

We borrowed an LS6 intake for a couple of minutes, threw it on the T/A and gained almost 20 RWHP. You can't go wrong with the LS6. I'm almost thinking of getting one and shelving the Holley. We'll see tomorrow.

Duntov097

Any news?

Slammed Vette

You think they would give you all this with the install kit.Just like the EGR block off I have to make!!!Mine is going on a C5.Maybe!

Elite_Hot_Rod

First off,
I would like to thank the guys at FAStech for all their help and patience,this has been a real pain in the ***, they stayed with it even when I was ready to buy an LS6 intake and shelve the Holley, great work guys. The fix worked, Sean bought both style fastners, the bolts with the low profile heads and the machine screws and a drill bit for countersinking the holes and gave me my choice of which to use. I decided that since we had the manifold on and off so many times that the guys deserved a break and we went with the countersunk machine screws. Sean countersunk the valley pan bolt holes and James and Matt finished the install. We were finally ready to fire it up, worked like a charm, no leaks. As for the dyno numbers, with the LS1 intake it made 362.7 RWHP/368.3 RWTQ, with the Holley it made 385.1 RWHP/358.4 RWTQ, both sets of numbers are with the converter unlocked and thru a closed exhaust. As you can se we got 23RWHP out of the Holley which should be just about right.The LS6 manifolds are supposed to make + 15 RWHP and the Holley is supposed to make 10 RWHP more than that <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" /> . Now I need to put a Flowmaster collector and cut outs on it and get a new tranny, this one slips in 3rd gear:o.

Mark

<small>[ April 07, 2002, 12:41 AM: Message edited by: Elite_Hot_Rod ]</small>

Duntov097

Man what a PIA Sorry for your troubles, but someone always has to be first. Just glad it was'nt me <img border="0" title="" alt="[Big Grin]" src="gr_grin.gif" />

Thanks for the good ifo and congrats on your results. <img border="0" alt="[cheers]" title="" src="graemlins/gr_cheers.gif" />

<small>[ April 07, 2002, 10:09 AM: Message edited by: Duntov097 ]</small>

GeorgeC

So Mark, you ended up dynoing with a LS6 intake and the Holley, and saw a little more gain from the Holley? How much porting was done on the Holley intake?

Slammed Vette

I'd like to know how much porting too.Dropping mine off Monday to get done.

onfire

iTrader: (17)

If I'm reading this right you threw a ls6 intake on and got 20rwhp, then put the Holley on and got 23rwhp but lost some torque?

R U A LS1

wasnt there already results that someone posted. Something like there was no more than a 5 rwhp gain <img border="0" title="" alt="[Eek!]" src="gr_eek2.gif" /> ! Yeah i think i read it on here a few weeks ago. Unless i read it wrong.

bigSS

So you gained 23 rwhp but LOST 10 rwtq over the LS1 intake? <img border="0" title="" alt="[Confused]" src="images/icons/confused.gif" />

Elite_Hot_Rod

The gains we saw with the LS6 were VS the LS1 and were made with the converter locked and the exhaust open. We didn't have time yesterday to open the exhaust with the Holley installed. The torque loss was probably due to the slipping tranny which is getting gradually worse. The manifold was port matched and only light polishing was done with some clean up at the throttle body mating surface. I think we got just about what we expected out of the manifold, the gains could have been higher with more extensive polishing but you have to remember this is a new product and I was concerned about going to far with it. Cost is also a factor, the Holley is about $90.00 more than an LS6 manifold not to mention the cost of the port matching, polishing and shipping. Again, I think it did what was expected, the gains Holley boasts could probably be acheived thru more polishing. I would have to say that a realistic expectation would be 5 to 10 RWHP over the LS6. Would I do it again, hell yeah somebody had to be the guinea pig.

Mark

<small>[ April 07, 2002, 12:18 PM: Message edited by: Elite_Hot_Rod ]</small>

F1

iTrader: (2)

</font><blockquote><font size="1" face="Verdana, Helvetica, sans-serif">quote:</font><hr /><font size="2" face="Verdana, Helvetica, sans-serif">Originally posted by Elite_Hot_Rod:
<strong>Lets hear it,

Has anyone installed their Holley intake manifold yet? Any problems? Any tricks?

Installed mine this weekend and it leaks air. Thought it was the bottom cover plate screw heads sticking out to far holding the manifold back from seating all the way. Ground down some of the head equally on all screws, still leaked. Looked at the gasket between the head and the manifold and noticed small but deep indentations in the gasket. Determined that was caused by the washers on the head bolts so we ground the 6 inner ones down just enough to sit just past flush with the head,still leaked. First thing in the morning we are going to check the manifold mating surfaces for flatness and may have to call Holley. Anybody had any problems so far? Thanks,

Mark</strong></font><hr /></blockquote><font size="2" face="Verdana, Helvetica, sans-serif">Well... look at that!! Ran into the same problem today.. Check out the pics and how far those screw heads stick up... Getting the countersunk bit out tomorrow and another set of screws. It seem to fit perfect with out the plate or screws, so I hope the modifications will do the trick. You have to love that quality engineering..

<img src="http://mycars.myplace.com/holley1.jpg" alt="" />
<img src="http://mycars.myplace.com/holley2.jpg" alt="" />
<img src="http://mycars.myplace.com/holley3.jpg" alt="" />