No, I'm not with you now... While your info is usually good, it's not worth trying to decipher your code. This is a computer (keyboard) forum, not a phone text social media site... U prolly dont git mi drift tho...
Shirl

 

Darn, I forgot 2 replace the word stroke and replace it with the word bore.
I will dumb it down 4 you free of charge. READ MY text THAT I POSTED before this 1 dummy (IT'S CORRECTED).
Are you with me now. It's Game-day MAN.
I am not JESUS I HAVE FLAWS

 

Okay, I'm with you now... We have a functional illiterate calling me a dummy... Now that's some funny chit right there...

 

No matter how U say it I answered YOUR QUESTION.
Not the other way around. Who needed who btw. So there goes the dummy part 4 u.
Hopes it works out 4 u.

 

Shirl,

The new Dart LS Next tall deck has a raised cam tunnel. I am not sure how far it has been raised but have one coming in for MID modification shortly and can do some measuring.

The Dart LS Nest is a stout well designed piece allowing the use of a kick out oil pan.

Steve

 

Extremely interested in this steve. Please update us once you get the info ironed out. Would like to get an estimation of max stroke from you with your extended sleeves as well.

I'm sure your sleeves would take a 4.200 bore N/A correct?


Jason

 

The MID version will go out to 4.200". The installed dry sleeves are slightly smaller on the OD than the Darton dry liners I use so max. bore on the dry will be less than 4.185" unless I can get a block sans sleeves and have some custom made for the tall deck.

Dart made me a WD for helping out with the MID work on these.

I should have the tall block next week.

Steve

 

Thank you. I would prefer a dry sleeve, but I would be fine with an MID is the bore was available, I'm just hoping a 4.600 stoke is possible without the normally required reduced base circle cam, and it has good sleeve length.

Jason

 

I'm very interested in your work on this (tall deck) aluminum block. What is the max stroke this block will handle? Most of the raised cam tunnel blocks use the 'two extra links' timing chain from Comp Cams. Can you verify this when the new block arrives?
Thanks
Shirl

 

On the 4.6" stroke and RHS tall deck block the rods get close to hit on the cyllender bottom that needs to be cleranced

 

Steve,

See if DART can tell you what max counterweight radius you can swing in there too for balancing is on there new block. Even with the cam cut it's important at those giant strokes or it may cost 2000.00 to balance! You want the tall deck and longer rods so you can keep those counterweights tall! I'm sure glad they are coming out with a raised cam deal too now. If they didn't kick the oil galley out as well it may not matter for stroke though and only allow bigger cams and aluminum rods etc.

 

I am sorry it took a while to get back you on this. Darton got the blank sleeves in for the tall deck block so I'm back to work on the tall deck.

The camshaft has been raised identical dimension to that of the RHS tall deck block. So whatever stroke the RHS tall deck will accept, the Dart tall deck will accept.

The finished deck height will be 9.750" on the Dart.

MID max. bore is 4.200"

I spoke with Richard Maskin at Dart this morning regarding the maximum stroke length with this block. He said there are too many variables to say for sure whether a 4.6" stroke crank will work. Rod journal size, rod design, firing order the cam is made for, and of course the base circle diameter of the cam itself.

Steve

 

This is a little more stroke than you want but between the savings in time & money it may work for you. http://www.ebay.com/itm/Callies-Ultra-Billet-LS1-Small-Block-4-600-stroke-/121472006235?pt=Motors_Car_Truck_Parts_Accessories&hash=item1c484bb85b

 

They have a 4.500" Magnum crank as well.

http://www.ebay.com/itm/Callies-Magnum-LS1-snout-4-500-stroke-/121472006242?pt=Motors_Car_Truck_Parts_Accessories&hash=item1c484bb862

 

I know this is an old thread but what would be the max stroke/bore combination for the DART aluminum tall deck ls next short block with darton sleeves And raised cam?

I read an article a while back about the ERL 502 build saying that something like a 468 CID would be the max?