Idk but some of the dudes on that forum are blind for some of **** they said looked nice

 

Most guys there are racer... who just want HP: stock/factory heads or aftermarket, plastic or carb intake. Added that some of the Best Na builders reside there on 1 site to answer any question known to man with Expert builders with Answers. No guessing between Civilian builders or spec Kings like myself.

 

Damn every builder known is there... except for your guy. Messing with you Darth.
Did BTR post on here? This was posted in the NA section. Just went and updated a question in the Carb section about this intake.

Ok guys, sorry for the delay in testing this thing, but I finally got around to doing some more single plane testing yesterday.
The results were as follows...
100% stock GM crate 6.2 LS3
235-25x custom cam
1-7/8 dyno header
All pulls were run with EDDY elbow w 102 mm TBI
Eddy SuperVic 594hp @ 6800 490lb-ft @ 5900
Holley Split race 603 @ 6800 494 lb-ft @ 5900
TFS single ( this was ran with a very nice custom 1000cfm carb as there are no injector holes) 580 @ 6500 rpm
These test numbers are the average of 3 pulls all made to 7200 rpm .
All pretty close IMO and probably wouldn't see any difference on the track between the top 2 manifolds.
A 1 inch open spacer HURT power to the tune of 8-10 hp on the EFI setups !
Was worth a few on the carb setup .
They both had pretty much the same distribution as well.( 8 wide band O'2s and EGT'S )

 

So you agree mamo is on the same level as the others you use for reference all the time. First time i have seen you admit it lol

 

No some tend to think he's on his own level and no one's else is.

 

Got a small update today guys.
Heads are finally off so there will be some updates in the next few days.
Engine expected to be completed next week.

 

Groovy...new engine ideas still in the works Bort? Or was that the "if all else fails" plan?

 

The new engine was not a back up plan.
I'm just thinking for the future in terms of what to do next.
I want to do something similar to Darth but am not going all out like he has.
I was looking at the iron block.
Cheapest block to use and is strong. But weighs a lot and doesn't disperse heat as well.
I would love to use a dart aluminium block but it's expensive as hell. 2.5 times the price of the SHP iron block.
If I really wanted to use aluminium my only choice would be the LS7 block because I want a bore size of at least 4.125.
If I want to add boost later though, it's not ideal.
I still think the next step might be to optimise my current combo with that new FAST Hi ram.
And then maybe buy the other parts slowly.
I know what heads I want. (the Mamo 265cc)
Just got to decide what block to use.

 

Bortous, you can get a sleeved Gen4 aluminum block from Texas Speed as cheap or cheaper than an LS7 block and it will go out to 4.185. Shipping and import fees will be huge, but so would the LS7 block if you can’t find one locally. Just another option for you.

 

I can get a brand new LS7 block in Australia for $3500 USD.
Would getting a resleeved block be cheaper than this?

 

Check through Texas Speed site or give them a call before your final decision and see what is comparable. A gen iv aluminum block is $2400. No machine work and power bore sleeves.

 

He had to pay Aussie import tax. It really sucks. Probably $3600 by the time he gets it

 

Damn, its that bad?

 

For Texas speed to supply me same block and the sleeves, with postage and import taxes plus stripping current engine etc it's going to cost a fortune.
i can save myself the hassle and just get a new LS7 block.

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Oh ok. I didn't realize it was that crazy.

 

Same. I knew it was bad, but not that bad. So you guys have all of those speed shops down there Bortous, and no body does the sleeving?

 

you can get a block sleeved here. Blackwell race engine did a wet sleeve in my original block. Don't do wet sleeve.
id buy a ls9 block and sleeve it

 

The expense to sleeve a block and then put it back together etc is more than a new block.
Plus there are stories of leaks with sleeving too.
Might be worth it some ways but the labour to disassemble and then assemble block I will also need new pistons too with larger bore.
The only aluminium engine choice I have is either LS7 or if I happen to become wealthy miraculously, I would get the LS next aluminum dart block,

 

Just my opinion but I think if you refine what you have it will be a beast.

With a whole new short motor you will only gain 35ci or so over your current 408 and spend a heap doing it.
Did you not see mentioned the Texas Speed PRC ls7 heads went 8 seconds in the 1/4 mile N/A on a stock cube LS3? Texas Speed also hold LS records that nobody else has beaten. They had the quickest head/cam SBE ls1 in the world for many years. Or if Mamo can do you a set of small bore LS7's.

If you sort out your solid roller issues and were to fit small bore ls7's and the new LSXHR LS7 intake and not be afraid to spin it to 8k rpm, I think the heads/intake will surpass what the extra 35ci will. And you can get some good money back for the LS3 stuff. There's no reason an ls7 headed 408 with high CR on e85 can't make over 550 rwhp.

To the americans who think it's not that bad, lol we end up spending double what you do to build the same thing. It's even worse than just the hefty shipping/taxes because our dollar value has dropped significantly recently, to $1 of ours only buys 66 cents of yours, and most of our wages aren't higher in numbers than yours are, to make up for that exchange rate difference.
For example, my strange S60 cost me $5500, it's like you guys paying $5500 of your money to buy one over there because I don't earn any more in my money, than you do in your money. If that makes sense. So yes this hobby is expensive over here.

There are some parts still in stock here by speed shops that were imported well over a year ago when our dollar was worth considerably more, and the price isn't as bad as having to import it now or more recent imports. The new LS7 blocks floating around is one of them, I think I saw one $4650 AUD not too long ago, not sure if their stock has been sold out.
Me personally because of our current prices on parts I'm sticking to my aluminum 6.0 blocks and then eventually boost it if I need 800+hp. If I grenade the one I have I know there's more good short motors around for only $1000 which buys close to nothing new in gm or aftermarket. I don't build for a "one off". I want to be able to repeat it over and over again if I happen to break something. I abuse my cars. Seen these guys spent $100+k on a street car and one expensive engine failure they vanish because they can't repeat it, or they don't want to because it gets too $crazy. I have a lot more fun with a driveline that didn't cost me 50k, than one I'd be afraid to abuse.

 

Some good advice I was given is to use mast black label 255cc LS3 heads on my 408.
These are the best LS3 heads on the planet from what I have read.
Runner is smaller than stock ls3 and yet flows 372cfm at .700 lift.
This means the head is very efficient and should have great throttle response.
In a 4.030 bore plate it might even be 380cfm.