I'm going to say, World middle, KB right, Indy left. I've had good luck with the KB and World. Never had an Indy.

ok, i'm referring to the blocks here, & i know there's going to be some haters, but the Indy looks like it has the best bottom end. Just out of curiousity Todd, whats the order from cheapest to expensive?

If I'm not mistaken the image showing the bottom end the KB is on the left, the top from the trans side I believe its on the right. At least based on images that Todd sent me. When I ordered my KB an Indy block was $1300 less but needed more finish machine wk.

Looking at the blocks from the front: KB left, World center, Indy right.

The Indy bottom end with those main caps does look the beefiest but they ran KB's in Top Fuel for decades so I think it will be strong enough.

Look at frost plugs and frost plug location that will tell you what block is whos. The lifter valley support rail also tells you what block is whos. Cross bolts also tells you about the blocks. I could be wrong but the KB block looks like a newer version of the block but not the present block being cast. The new KB being cast now has a new manufacturer of their billet caps.

Looking at the front pictures it is KB on the left, World center and Indy Right. I have only built a couple World blocks and do not sell them so you will have to call Bill Mitchell for pricing and availability. To be fair the World and and the Indy are wedge blocks and the KB is a hemi. I have things about all of them I like and a few I do not. The KBs are 7495 and come much closer to finished. The Indy is 5500 BUT you have more finish work to do or you can order it with the work done. BE CAREFUL ordering the Indy as some of the machine shop operations are NOT STANDARD and require additional machine work that your local shops may not be able to perform. Example Hyd oiling. Indy will do this if you order (and pay) for it but you have to know what you want at the time of ordering. This is just one example.
The Kbs are beautiful pieces. IMO they are the gold standard. However they have had their share of warts and issues along the way. I will not rehash all of that drama but under the new ownership they have made tremendous strides toward making things the way they should. Not quite there yet but closing in on that with almost daily progress. I believe that the day when we can call and get a block in mere days not months and years is soon upon us.
The KB pictured is one of the last of the Ken Black era. The new blocks are being made with several improvements and new features. They will have a part number where you can combine popular options. This allows them to be built ahead of time so as to allow for faster delivery. Custom options are available and a PRO block is as well for the pro shops to customize them further depending on their final usage.
The Indy has several options that the KB does not. Lowdeck option and Solid block (no water) among them. KB may make these at some point in the future but time will tell. They have in the past. Lead times on the Indy are about 4 to 6 weeks normally but during high demand they may take a bit longer. The KBs are in the 4 month range but should be getting better in the near future.
I have built a lot of Indy block engines and a few KB and World blocks. I liked the KB going together and the way they have performed to date. The couple we have gotten and sold so far have all been up to snuff. Some of the Indy blocks have had some issues BUT those were mostly their early blocks and those issues were largely resolved. Same with the Worlds. I have had one of each that almost went off the back dock but we were able to get them going after a lot of drama. I could say the same about almost any part we use.
I have a complete photo file of all three if anyone wants them just send me an EMAIL at moparts@ptmc.net and I will send them over.
Todd

Todd,
I am trying to buy a chassis now. If it does not have a motor, I will be ready to buy a new KB aluminum block. I loved my previous (2015?) one, byt sold the car turn-key before I moved to Greeensboro, NC.

I will stay in touch.
Jim

Just in anyone on this post isn't reading the adjacent post.. here's some pics:

2

3
Part numbers and specifications also attached if you're interested.

So to the KIWI OP I'd say get on the phone to DarrenB as IIRC he's one of the partnership that are making the KB blocks. Also, OP, the reason there was so much smoke about KB a couple of years ago is that no one was getting their orders filled and many folks had thousands on the line, or missed racing seasons because of no block.

Looking at that block it has a lot more beef in the top end including the extended deck and monster webs between cylinder banks. At what power level does that extra stiffness become important?

R.

Hey Dogdays, im just a bracket racer so going for world records is not in my schedule. Im currently running an Indymaxx lowdeck but ive been beating on that for close to 15 years now, im at the point im thinking a fresh block needs to co.e into my race program. The new KB block looks like every boys wet dream but i dont think i need a block that can handle the power levels that block was designed for. At the end of this current season i think I'll contact Todd for an Indy block. I can do some of the mods reqd, i only need the deck parallel to the crank centerline which i hope Todd can confirm before he posts it down under. This post was definately an eye opener & very informative to whats out there. To all those who contributed, thanks for you input.