You guys said it would take 7500 plus the heads to adapt them to the lt1?????? I dont know what you were tlaking about doing but I called them and they said they have reverse flow heads and all you need is a different exhaust flange, 7 bolt which you can buy headers that have them, and to notch the block for the exhaust pushrods then have the intake port matched to the heads and have extrude hone port each port to flow 350cfm. If there is anything else let me know because this doesnt sound all that hard.

 

Well, if you are gonna use these heads, then you probably already have some mods, and that means changing. So you now have to buy different headers, hope they fit, as all headers are no fun in a 4th gen. Hopefully, you would do this to a stronger bottom end than stock, and have a custom cam for it. Remember, this isn't gonna be a 400 HP N/A head/cam combo, the heads are gonna make a LOT more power than that. So essentially, you have to build the motor for a blower, then get the heads. 7500 seems about right for the top end stuff, maybe a little high. We were gonna do it on my friends mustang, but it wasn't worth it $$ wise. It was gonna be 4800 for heads (a deal!!!), 280 cam, 600 spyder intake, 250 fuel rails, 300 injectors, 700 headers, 500 misc. Thats almost 7500 just in topend stuff! I would love to do it, and probably will one day, just need some more $$, or a free set of heads. I'd spend the rest of the money then.

 

well the issue I had with this is someone said it was the regular 5k for the heads and then 7500 to adapt them which is untrue. I have a bone stock motor so I wont be wasting money to put these heads on just paying a whole freaking lot but hell considering the power you can get I was planning on doing a turbo and still am but my mind is changing again since these heads could do as much as i was planning on getting with the turbo and tehn some for the same money and probably less problems then a turbo setup. Plus they are WAY cooler we'll see.

 

I think you missed the point or were confused by the phrase "to adapt them". To be able to really take advantage of the flow these heads are capable of, you'd have to build a supercharged, turbocharged or large displacement stroked engine, any of which would require rebuilding the bottom end and could easily set you back $7,500 (or more). That's in addition to the cost of the heads, headers, larger injectors, etc.

Brain is right...

 

Don't believe Arao about "Buying" some headers. Ever had truely custom headers made? They aren't cheap. Call:

http://www.kookscustomheaders.com/
or
http://www.lemonsheaders.com/

Need an Intake? Unless you plan on adapting a Carb Style Intake which will still require alot of extra Machine work Call:

http://www.hogansracingmanifolds.com/
or
http://www.wilsonmanifolds.com

Whats it cost to ship a cylinder head TWICE, once to the piston manufacturer, then back to you? Then tack on the truely custom piston molded from your head. Call:

http://www.cppistons.com/
or
http://www.diamondracing.net/

I *could* keep listing things this way, but just an FYI if you've gotten this far you've already spent ~$5,000 and haven't gotten a Cam, Pushrods, Throttle Body or Carburator, among other htings in order to do this properly.

Not trying to be a **** about it but if it were truely that simple there would be multiple cars running around with these things laying down the Big HP numbers, and Arao would be on Backorder. Instead they're an Urban Legend that no one has ever gotten a complete motor done with.

Good luck!

 

I used to do all my own work and I've been fooling around with cars for years. Recently it has become impossible for me (physically) to do much of my own work and luckily, it has become possible fiscally for me to pay someone else. So I've got a pretty good idea of what might be involved and how much it would cost to do a set of these heads. I don't know where $7,500 came from, but it might have been me 'cause it sounds like what I would estimate as a minimum. $7.5K assumes that you can at least do the motor R+R and tuning yourself but will be buying all the major parts. If you payed a professional to do it all it'd be a $10K job at a minimum and that would not include the bottom end you would want/need to support the hp potential of the heads.

There heads are awesome and my hat's off to those that are trying this. So please don't misunderstand. But if the question was at all serious I thought I'd inject a little note of reality, as a couple of others have done. When I got to the point of seriously budgeting this out I came up $12-15K and I already have a good bottom end.

Good luck.

Rich Krause

 

I dont really think I am missing the point since for the entire engine I came up with over 15k to build it then there is the drivetrain etc.... However I did talk with the guy and he swears hooker headers makes one that works for the f-body with the 7 bolt flange thats needed. Also he said he could take the lt1 manifold and work on that to make it work well for 700 bucks or I could send it to extrude hone for them to work on it for 400 or so, the only difference being they could put the heads and manifold on a mock-up engine and run it to be sure it all works as its supposed to. The rest of the engine would need to built up if you were doing a blower or any sort of serious power adder anyways. I dont see why some people get irritated when questions like this are posted I was just wondering if anyone heard of anything that was especially wierd they might not have mentioned guess not.

 

I've seen Unstable Bob's LT1 Dominions (as Arao used to call them), and the custom made headers for them. I believe the ports require 2" primaries, that then step down. The headers have to bolt to this:

UNSTABLE BOB's DOMINIONS

I know what George Baxter had to pay for custom headers to use the Brodix heads in his 30th SS Convert, and the cost was errrr..... "prohibitive".

 

Couldn't you get some hooker lt's and cut off the header flange and about 4" of pipe or whatever needs to be removed, and then weld on a 2" primary to mate to the 7-bolt flange on the head. Why is this a bad idea?

Also, I thought the Dominion heads used the stock intake. But I guess they use a standard carb intake manifold instead, right?

Economically, it looks like these should have never been built for the reverse-flow LT1 if the user needs so many other things (besides pcm tuning) to make them servicable.

Just feeding the fire,
Harold

 

actually the guy suggested cutting the flange of the header off like you said and they have some for the reverse flow heads and they can use the stock manifold from what I hear, its just the stock manifold doesnt flow nearly as much as the heads so it requires some work to be done to it.

 

You can try to save some money by getting them on E-Bay

http://cgi.ebay.com/ebaymotors/ws/eB...tem=1871096785

Jerry

 

Always funny to see this thread come up again.

I know I had said a few months back I would be ready to go but I decided to take a break from throwing away cash

Just thought I'd chime in to ease some tension. At this point I have done everyone a favor and sent my head to JE so they could make me some custom pistons for me. I sent the head so there would be no mistakes. They now have the profile in the computer so no one else will have to go through this expense and they can just tell JE what they are doing motor wise (compression, etc...) and they can have a set out to you in no time as opposed to the couple of months it took me to get the pistons.

You can use the LT1 intake but its going to take a little welding. Honestly I would just send a manifold to Arao and let them do all the legwork and have them send it back to you ready to bolt on. I think the longtube cutting of the flange is a great idea to save cash if your willing to give up a few ponies. I say that because the exhaust flow on these heads is unreal. I will be running full length 2" headers but my car will also have a motorplate and !a/c

A new set along with the accompanying parts will easily put you in the 10K range for the top end just to be on the safe side. Thing is, you have no blower belts and accompany parts to worry about. You tune it and you have a naturally aspirated monster.

 

So there's finally going to be one LT1 in the world running around with Dominions?

If Dominion talk were commensurate to Domion walk, every f'n LT1 in the country would run them with the dyno and track numbers to back it up!

That said, can't wait to finally see that beast run, Bobby!

 

Bobby, get that thing running, lay down some insane numbers, then sell that motor to me I love NA....just need more of it now

Jason

 

I came across this flow chart...

Scan down along the left side, find Dominion, and then scan across to the theoretical HP limits with those heads.

Pretty nice stuff. Ironically, it's sort of driving me toward the notion of a Big Block.

I personally have a Caprice with an LT1 and I think those heads, with the 6-speed conversion would be great.

But I have to ask myself...

With a Ram Jet 502 (502hp/565lb.ft) available from Scoggin-Dickey for under $9,000, I have to really question the economics of the Dominion heads, or for that matter, forced induction.


If I end up going with the Dominions, I think it will be because a 4-valve, 6-speed, ex-police car is going to be a fairly unique toy.
In other words, the cool factor.