roadtrip120

iTrader: (29)

Thanks for getting involved and trying to help us out.

Huge thanks from the LT crowd


Brady

stevo9389

deserate times call for desperate measures! rob a bank, black mail a politician or get in really good with a rich old woman then kill her off after you become her beneficiary. then use the money/power to have them made. you will be the most adored scumbag amongst LT1 owners.

1badzee

iTrader: (12)

Puck

iTrader: (17)

Shame GM doesn't have much interest in this, but you can't really blame them.

I would love to jump on the ebay one, but the starting bid is already the most I am willing to pay .

If I had the cash I would go for it...and just to **** everyone off I'd punch it out as big as it can go but then run a hydraulic roller and daily drive it .

transamws6_97

iTrader: (5)

sounds like we need someone in the lt1 community to hit the lottery and just buy the molds and give them to some aftermarket company

4K+Converter

Set up right, no one would see one of those motors coming.

nighthawk15

Despite the fact that GM doesn't seem to want to build them, the fact that everything still exists to produce them is pretty badass! Like others have said I really doubt that they wouldn't be willing to eventually give up the dies if they can't be convinced to build the blocks. If there are no plans to use them, then do they have any real reason to even want them? I mean seriously it sounds like they're doing nothing but collecting dust and taking up space.

If I hit a jackpot, I promise I'll do it, dude! And screw giving them to another company, I'll just start my own. I can dream right?

badfbodyz

iTrader: (3)

I don't think gm would have to worry about these things not selling. If these molds were sold to an aftermarket company, there would be WAY over 100 of these blocks purchased over time. Because not every person that owns an Lt1 is on this site and would love to have one of these.

Jerry Clayton

Most of the chatter you see are the Camaro/Firebird guys while a lot of the activty we see for our stroker LTs is coming from the Impala SS, Buick and Caddie folks--

We have in stock on the shelf balanced rotating assys for 4.125 bore/3.875 stroke kits which is 414 cubes at the 4.125 bore and I think 427 (nice sounding magic number) at 4.185 bore

mikes94z

Jerry Wouldn't boring the block to 4.185 be taking the bore to about the max? This would leave little to no clean up room for a future rebuild. I know some blocks can go to 4.200 but I don't think this block will go that far.

The bore will help allow for more head flow but there is a point of limited returns. I don't think 13 cubic inches is going to equal any real power. So the difference between a 414 and 427 is just trying to chair up the guys that want a show car or conversation piece.

Blind head bolt holes, 4.125 bore, and nice caps with a little thicker casting is what makes this a nice thought. But for serious power a piston with a thicker compression height would be needed to take advantage of a stronger casting. This would lead to a shorted rod or a little less stroke and more RPM's.

I would love to see this in a nitrous car shifting at 8000 or higher while spraying 400-500 hp of nitrous or in a boosted car pushing 20lbs or more boost. If it was going to stay N/A it needs a set of 12 to 15 degree heads.

Jerry Clayton

Yes Mike

We don't believe in pushing the bore size to max or decking to absolute minimun to allow for rebuilds down the road--that is why we stock stuff for 4.125 bore to take advantage of the Dart SHP blocks allowing for rebuilds down the road. the 427 number has a nice magical sound and is a possiblity altho not recommended by us. Also the 3.875 stroke allows about as far as we want to go with a stock cam location---which is also necessary for the opti and cam gear driven water pump.
the 6.0 rod works good with the 3.875 crank UNLESS you need a dished piston for a lot of boost, then you will need a shorter rod on a stock deck ht block.
The use of 2.0 crank pins allows smaller rod big end which is a tremendous help with clearance on the pan rail and camshaft.

Puck

iTrader: (17)

Brodix will convert any SBC head they offer into LTX compatable reverse cooled heads for a relatively small fee, I think $400.

The 18x heads after hand porting stand out to me as a great candidate for 414 LT1 topped with a super vic and a "modest" solid roller for a VERY impressive street car.

mikes94z

The 18x heads are the worst choice for an 18* head. That was their answer for a cheap conversion to a better head. It uses the standard 23* valvetrain. Not my choice. I think there are better 23* heads then that 18* head.

QUOTE:
The BRODIX 18X offers the best of both worlds, 18° horsepower without using expensive shaft rockers or offset lifters.
This head offers a dramatic horsepower increase over the previous 23° cylinder head.
Several advantages of the 18X are intake ports that flow over 320 cfm out of the box, an intake valve size of 2.140, raised intake ports, and shallow combustion chambers. The 18X is an excellent choice for the budget-minded racer who wants to go fast.

Now my converted 23* stuff flows better then that.

Evaporate

iTrader: (22)

Ya, we need one of the top dawgs to buy the block that's for sale, push some crazy times on the track, and like somebody mentioned here already, have GMHTP give us some love and stir things up- call gm out by letting them know there's support for this.

Nastyc4

iTrader: (13)

I am about to watch my 370 ci lt4 come together. It's a no expense spared build built for 8000 rpms and FFs I had To use a b body block. I would have kicked the wife out and slapped down my cc for whatever price at the time but the only block on eBay at the time had the bigger main bearings.

I need to check my lottery tickets! The thought of a huge bore short stroke huge headed ltx with a custom sheet metal manifold and 9000 rpms has me real excited !!

Puck

iTrader: (17)

Now I have never used them and am going by memory - there was a lot of hype and good stuff said about them a few years ago when they were released. Out of the box they may not be as stellar as the pure race heads, but IIRC people were getting close to 350cfm out of them ported, plus they have a longer short side radius and less pushrod pinch then a standard 23* heads. 320cfm out of the box is nothing to sneeze at, and from what I recall they had some potential for improvement with hand porting.

My 23* AFRs flow 330, but that is max ported by hand with a lot of labor wrapped up in them...and that is not common, it just doesn't get much better then that for native LTX heads. If you could get 340cfms with more low lift flow, and not needing crazy custom parts, you have a killer head for a street car. Now, if you are talking racing, I would jump right to some big SB2.2 heads.

KeysZ28

iTrader: (1)

So who's our bidder on ebay? anyone on here?

GIZMO

iTrader: (8)

I would also like to know. I really don't want to bid against anyone that I know (You can PM me if you want).

FASTFATBOY

iTrader: (23)

The heads on my car are capable of 340 cfm, they are standard 23* heads(RHS 235). On 421 inches that bitch would THROW DOWN. If you couldnt run nines all motor in a streetcar...well you need to be playing with matchbox cars.

Tony Shepherd

iTrader: (4)

$3938 won it. Plus shipping! Hell that means roughly $4250? HOLY SHIAT

Who was it?