SHP max??

[tylera189]

I am looking to build a 421-434sbc. Somewhere around 700hp never really plan to go over 750. I know Dart says 600hp max. But does anyone have any real world experience, or knowledge of these blocks. Can they hold this. It will be a N/A engine no boost, or juice. Think these can do it or just go with the little M, anyone forsee any issues doing this with the shp block. Also how much stronger do you think it is then a stock 400 block??

[Awesome Bill]

You can make 800 hp with these blocks with no problems. We already have a turbo 406 making that with no problems. These blocks are way better than any GM product and have splayed mains. I would not push the block any further, no need. But even 800 for prolonged periods is very hard on an engine block. 700 is not too bad and if your goal is just that, I would have no problem with assembling it.

[Dart Vader]

The SHP blocks are A LOT stronger than a stock 400 block!

[pielspowered]

I, too, am interested in using the SHP block for a 421 to replace my factory 400 block, heavily worked but making me nervous. Can it be bought with 400 mains, 4.155 bore and clearanced for 3.875 stroke so that I can use my internals? It makes approx. 600 hp on gas carb right now. Thanks for the help.

Gary

[tylera189]

You can make 800 hp with these blocks with no problems. We already have a turbo 406 making that with no problems. These blocks are way better than any GM product and have splayed mains. I would not push the block any further, no need. But even 800 for prolonged periods is very hard on an engine block. 700 is not too bad and if your goal is just that, I would have no problem with assembling it.

how much cheaper would one of your shortblocks be with the SHP block instead fo the little M. Would you be comfortable pushing this block to 725 maybe 750, if that would even be possible with a 23 degree setup. In a naturally aspirated, bracket racing application.

[CNC BLOCKS]

I, too, am interested in using the SHP block for a 421 to replace my factory 400 block, heavily worked but making me nervous. Can it be bought with 400 mains, 4.155 bore and clearanced for 3.875 stroke so that I can use my internals? It makes approx. 600 hp on gas carb right now. Thanks for the help.

Gary

It can only be bought with 350 mains only and the bolt spacing is for the 350 housing bore and depending on your rods a 3.875 may swing with out clearancing as its only .0625 more then the swing of a 3.750 stroke.

[Trmnatr]

It can only be bought with 350 mains only and the bolt spacing is for the 350 housing bore and depending on your rods a 3.875 may swing with out clearancing as its only .0625 more then the swing of a 3.750 stroke.

Carl, You would know better on this comment

I would think a NEW design would be a little better than that right off the bat (????) I have not had my hands on a SHP yet

Comment by Doug about 406 using SHP block in his shop
I wish Dart had spent more time designing the valley oil return system, there appears to be about a quarter to half quart worth of "pockets" for oil to be trapped within. Definately a level check required after the first run in. Otherwise, first rate stuff.

[Awesome Bill]

$500.00 cheaper and thats a killer deal and we have already beat it with over 800 with a small turbo 406. You can't hurt this block. You could get a 3.875 350 main for your combo or have your turned down. I would not hurt. Not the best way but I have done it many times with stock 400 cast stuff and never really had an issue.

[tylera189]

$500.00 cheaper and thats a killer deal and we have already beat it with over 800 with a small turbo 406. You can't hurt this block. You could get a 3.875 350 main for your combo or have your turned down. I would not hurt. Not the best way but I have done it many times with stock 400 cast stuff and never really had an issue.

well I would be putting all new forged stuff in it. So I would just go with a 350 main stroker crank etc...

[pielspowered]

Who out there can provide an SHP block, deck it to 9.000, bore and hone to 4.155, line hone the mains and anything else necessary ready for me to assemble with my rotating assembly? Cost? I live in northest PA. Also, I would have to have my crank turned to 350 main dia. so it may make sense to spend the extra 500 or so and go to a little M and save the crank work. Comments on that idea? Gary

[CNC BLOCKS]

Who out there can provide an SHP block, deck it to 9.000, bore and hone to 4.155, line hone the mains and anything else necessary ready for me to assemble with my rotating assembly? Cost? I live in northest PA. Also, I would have to have my crank turned to 350 main dia. so it may make sense to spend the extra 500 or so and go to a little M and save the crank work. Comments on that idea? Gary

We could machine that block to your specs and to your door for 1795.00 and we would plate hone with what ever your using for gasket and hardware.

If your putting your own cam bearings in go over this link on page 2
http://speedtalk.com/forum/viewtopic.php?t=12112

[Awesome Bill]

Depends on what crank you have. Pro Series Callies go for over 1000.00, it would make sense to spend 250.00 on bringing the crank down and no rebalancing. Ofcourse, offshore cranks are cheap and could purchase that and sell yours and your almost even.

$1750.00 is what we charge for the block fully race prepped with brass freeze plugs, cam bearings, decked, radial notched, bored and plate honed with studs or bolts and gasket your using.

[pielspowered]

Thanks for the quick response to you both. I have an Eagle 4340 crank so I think it would pay to turn it. But, would it make sense to go to a Little M sportsman block with 400 mains and save the cost to turn the crank off of the extra cost to buy the Little M and get the better block for not a whole lot more?

[CNC BLOCKS]

Thanks for the quick response to you both. I have an Eagle 4340 crank so I think it would pay to turn it. But, would it make sense to go to a Little M sportsman block with 400 mains and save the cost to turn the crank off of the extra cost to buy the Little M and get the better block for not a whole lot more?


If you have a 3.875 stroke then a Little-M Sportsman might be the way to go and we sell that block all machined is 2395.00 shipped free in the U.S.

Some times turning a crank down that far will move the oil holes into the radius of the journals if they are off to begin with and plus renitriding after its machined.

First have the crank magged to make sure it not cracked and go from there.

[Awesome Bill]

Yep you could do that also. Little M Sportsman fully machined, we don't have to radial notch this one so your bore and plate hone, cam bearings freeze plugs (brass), decked to 9.0" and align hone if needed is just $2195.00. Shipping would be about $100-150 depending on where you are?

[want-a-be]

If you have a 3.875 stroke then a Little-M Sportsman might be the way to go and we sell that block all machined is 2395.00 shipped free in the U.S.

Some times turning a crank down that far will move the oil holes into the radius of the journals if they are off to begin with and plus renitriding after its machined.

First have the crank magged to make sure it not cracked and go from there.


Hey CNC Blocks,...does that price include truing up the lifter bores also? Good price.

Don

[CNC BLOCKS]

Yep you could do that also. Little M Sportsman fully machined, we don't have to radial notch this one so your bore and plate hone, cam bearings freeze plugs (brass), decked to 9.0" and align hone if needed is just $2195.00. Shipping would be about $100-150 depending on where you are?

Bill

Don't forget the lifter bores are always on the tight side and need honing and the water holes in the decks have to matched to the head gasekets and the oil galley holes need to be taped deeper to do the job right.

[want-a-be]

LOL...you mean those things matter?

Don

[CNC BLOCKS]

Hey CNC Blocks,...does that price include truing up the lifter bores also? Good price.

Don

Don

I have a Little-M Sportsman block that has a 9.000 deck and its been blue print bored and plate honed to 4.1255 , mains are line honed to 2.6415, and the lifter bores have been trued up to .8755 as we found some small tooling marks in them that would not hone out. Water holes in the decks have been matched to the gasket, All the freeze plug and cam plug holes have been chamfered, oil galley holes have been taped deeper. And the machine work was done in a 4-axis CNC machining center.

I would let that go for 2395.00 and shipped free in the U.S.

I would highly recomend using the GMP-8 cam bearing reworked in this link on page 2 there is some info.
http://speedtalk.com/forum/viewtopic.php?t=12112

Here is a link on some of the blue print work we do.
http://www.chevelles.com/forums/showthread.php?t=93124

[want-a-be]

Very nice work you do there. I hope to be able to use you in the future.

Don

[CNC BLOCKS]

Very nice work you do there. I hope to be able to use you in the future.

Don

Don

Thanks for the nice words as we try do our work with state of the art machines and tooling as we help out a lot of other shops all over as most shops can't duplicate what we can do as far as blue print work on blocks.

[want-a-be]

Whats a 10.2 BBC block with Raised cam going to cost me. Just like you priced out the SBC,... but I'm wanting to do the final Honing myself. 4.6 bore. Needs to swing a 4.375 stroke with GRP rods. Going to stay away from the 55mm cam cause I'm not sure if it will miss the Aluminum rods. PM me with the price if you would prefer.

Don

[lun40119]

Not really sure if it matters........I bought a crank from Carl....great guy great deal, excellent customer service. He even answered his own phone. I really love that. Getting screened sucks. Being told you will get a call back, and never getting it is even worse.

[want-a-be]

Not really sure if it matters........I bought a crank from Carl....great guy great deal, excellent customer service. He even answered his own phone. I really love that. Getting screened sucks. Being told you will get a call back, and never getting it is even worse.


X 2 on that. I've also talked to Carl on the phone and was impressed with exactly what Jake has mentioned.

As of now I don't have a deal with Dart, which might suprise a few on The Dart Board. I'd like to get that taken care of. Until then I'm looking for a good place to supply me with Dart Cast Iron. Jake has turned me onto a guy he trusts pretty good. That is good enough for me. I'm liking what Carl has to offer also.

Don