new block #31161211

[brougham]

With this new block we hear its casted and machined in usa. can any one tell me the diference betwen blocks#31151211 & #31161211 i see there has to be a lot of changes due to the fact that there is a 400 to 500 dollar diference



Administrator Edit: This thread has been moved to the SHP forum. Similar threads should be posted there in the future, thanks! -DV

[Dart Vader]

The Little M block (31151211) was designed as a full race piece, where as the SHP block (31161211) is really meant for high performance street & sportsman racing use.

The primary difference involves the way we cast both blocks. The SHP is cast in a fashion that will require less machining than the Little M. This means it offers a bit less flexibility since it is closer to being finished out of the mold than the little M, but it allows us to produce some high quality blocks with relatively less machining cost.

The second factor would be alloys, specifically, the iron alloy used in the SHP block has slightly lower nickel content than the Little M iron alloy. This means that the material isn't quite as hard, but it also means that we can produce a block for applications that don't need the extra hardness at a lower cost.

[heimohuima]

On the same subject, does quate " provisions for stock roller lifters and cams"
mean that you could use oem roller cam and lifters from l98 or lt1 engine and
you don`t have to use an aftermarket conversion?

[Dart Vader]

The SHP block is a non-vortec, non-LT design. The L98 stuff works.

[heimohuima]

The SHP block is a non-vortec, non-LT design. The L98 stuff works.

So did I understand it correctly? Cheaper oem lifters work as a bolt on in a SHP block and you don`t have to buy more expensive aftermarket retro-fit roller lifters?

[Dart Vader]

So did I understand it correctly? Cheaper oem lifters work as a bolt on in a SHP block and you don`t have to buy more expensive aftermarket retro-fit roller lifters?

You are correct, no retro-fitting would be required.

[heimohuima]

Thanks for the info, now I know what block I gonna use in my new build. :)

[Dart Vader]

Thanks for the info, now I know what block I gonna use in my new build. :)

:D
Not a problem.
I think you'll be very happy with the block, if you have any other questions just fire away!

[Awesome Bill]

I think he is asking is does the new block has the spider provision for just using the stock oem roller lifters, already machined and done, or if there are bosses provided to drill and tap. The retro fit lifter is way more expensive than the oem. Is this new block able to take the new gm style lifters and lock plates and the spider and just install them without any machine work?

[Dart Vader]

Yes, it is machined to accomodate the factory hydraulic roller.

[Awesome Bill]

that is really good, because this block will serve as a big bore higher end crate engine we use the hydraulic roller on and a pretty good race block for smaller inch engines.

[1989TransAm]

Any shipping dates on this new block? Looks like it will be the one I will use on my new motor. :D

[Dart Vader]

We have been shipping them to some of our major distributors already, but they have been in extremely high demand. Right now we are ramping up production, I'll try to get together a little bit of info and post it up here for everyone.

[1989TransAm]

That is good news. :D

[Dart Vader]

Since everyone has been asking about them I've posted a thread about these blocks in the News section. There's a lot of information there, including spec sheets.

[1989TransAm]

Regarding the new Dart block. How much larger of a camshaft diameter can one bore the cam tunnel out to? Just wondering about a larger diameter camshaft and if it is feasible in performance and cost?

Edit: After some research it looks like a 55mm camshaft can be done as there are cores available. Would that work in the new Dart block? Thinking of using babbit bearings like on the LS1 motor.

[Dart Vader]

The block was built around standard oem cam journal sizing with standard lifter bore sizings. If you were to run larger size cam cores we would recommend the Little M blocks. In our small blocks we recommend nothing larger than 50mm roller, which is also common size with the 55 babbitt bearings.

- Please post future questions about the block up in the news section, it will help to keep all the answers in one place so that we can have a nice reference thread for SHP stuff. Thanks!

[1989TransAm]

Thanks. I will do that from now on. ;)

[Brian@ADperformance.com]

Any shipping dates on this new block? Looks like it will be the one I will use on my new motor. :D


We've already received 3 of them for inventory... but we ordered them quite sometime ago.

They're a nice looking piece.

Brian