New 440 Source 4.500" Bore RB Block

[PROSTOCKTOM]

Some of you may or may not know about their new block they are in the process of having produced.

I spent an extensive amount of time today talking to 440 Source about the new block and here's what they told me.

1. Block will be cast and machined in China (I am okay with that)

2. Price is not set in stone yet, but they are hoping to target around $3500 at this time.

3. Block will be cross bolted

4. They are projecting it will support 1800-2000 HP

5. At this time they think the first 50 will be available in December.

6. If interested in one they are compiling a list of prospective customers and will call them in the order received when the blocks are ready for sale.

7. I got on the list

8. They are currently working to expand the available line of 4.500" bore pistons.

9. If the RB project goes well they will plan on producing a 4.500" bore 400 block later on.

That's about the long and short of the conversation.

Tom

 

[AndyF]

Sounds good to me. The issue of course is attention to details. They really need to get all of the details correct. Cam bore size, lifter bore size, lifter bore angles, main bore size, deck height, bolt hole placements, etc. Everything has to be spot on before the block will be a success. Small mistakes such as machining the cam bearing bores oversize will basically ruin the block so they need to have the machining centers dialed in perfect before running the production blocks.
$3500 is a decent price. Ford is now selling the SVO 460 block that has 4.500 bores and four bolt mains for $3200. They used to be $3900 but they have cut the price. Paying a little more for a Mopar block should be okay.

 

[MOPARMAGA]

Some of you may or may not know about their new block they are in the process of having produced.

I spent an extensive amount of time today talking to 440 Source about the new block and here's what they told me.

1. Block will be cast and machined in China (I am okay with that)

2. Price is not set in stone yet, but they are hoping to target around $3500 at this time.

3. Block will be cross bolted

4. They are projecting it will support 1800-2000 HP

5. At this time they think the first 50 will be available in December.

6. If interested in one they are compiling a list of prospective customers and will call them in the order received when the blocks are ready for sale.

7. I got on the list

8. They are currently working to expand the available line of 4.500" bore pistons.

9. If the RB project goes well they will plan on producing a 4.500" bore 400 block later on.

That's about the long and short of the conversation.

Tom

Excellent, I will call them about the low deck.
I definitely want to run a low deck !

 

[mopar head]

Block will be cast and machined in China

Good luck with that.

 

[PROSTOCKTOM]

Excellent, I will call them about the low deck.
I definitely want to run a low deck !

You can call them on a 400 block, but they have no intentions of doing it until after they recover from the RB project.

If they had a 400 block ready to sell in a year I would be surprised.

Tom

 

[RustyRatRod]

Some of you may or may not know about their new block they are in the process of having produced.

I spent an extensive amount of time today talking to 440 Source about the new block and here's what they told me.

1. Block will be cast and machined in China (I am okay with that)

2. Price is not set in stone yet, but they are hoping to target around $3500 at this time.

3. Block will be cross bolted

4. They are projecting it will support 1800-2000 HP

5. At this time they think the first 50 will be available in December.

6. If interested in one they are compiling a list of prospective customers and will call them in the order received when the blocks are ready for sale.

7. I got on the list

8. They are currently working to expand the available line of 4.500" bore pistons.

9. If the RB project goes well they will plan on producing a 4.500" bore 400 block later on.

That's about the long and short of the conversation.

Tom

Thanks for this information, Tom. Maybe one of these days I can build a real engine. LOL

 

[MOPARMAGA]

You can call them on a 400 block, but they have no intentions of doing it until after they recover from the RB project.

If they had a 400 block ready to sell in a year I would be surprised.

Tom

Thanks Tom it would be just to show interest.
Im hoping my build im doing now will last a few seasons.

 

[MOPARMAGA]

Thanks for this information, Tom. Maybe one of these days I can build a real engine. LOL

Yep, depends on what "real" is in the eye of the beholder. I know I'll be pushing the limits of a factory 400 block pretty soon and it isn't "real" to a lot of drag racers.

 

[PROSTOCKTOM]

Just remember, "Comparison is the thief of joy"

Tom

 

[273]

I'm guessing they went with 4.50" bore on a RB cause most are probably gonna build 540+ cid out them ? Allowing for longer rods.

 

[Garrett Ellison]

Of course the same block with modifications for Hemi heads in the future after recouping from tall and short deck production for under $4K would be a nice move, but one that I'm not expecting to see happen.

 

[RustyRatRod]

Yep, depends on what "real" is in the eye of the beholder. I know I'll be pushing the limits of a factory 400 block pretty soon and it isn't "real" to a lot of drag racers.

It sounds as if an 800HP build wouldn't make the new block break a sweat. I'd call that real.

 

[MOPARMAGA]

It sounds as if an 800HP build wouldn't make the new block break a sweat. I'd call that real.

Yep

 

[RustyRatRod]

Is the 4.5" going to be the biggest recommended bore, or will it go larger?

 

[PROSTOCKTOM]

I'm guessing they went with 4.50" bore on a RB cause most are probably gonna build 540+ cid out them ? Allowing for longer rods.

I think a lot of them will be 4.500" x 4.500" for a 572" combination.

Is the 4.5" going to be the biggest recommended bore, or will it go larger?

I didn't mention it, but they told me the block will bore all the way to 4.600" and still be plenty thick.

4.600" x 4.500" would be a 598" combination.

Tom

 

[RustyRatRod]

I think a lot of them will be 4.500" x 4.500" for a 572" combination.





I didn't mention it, but they told me the block will bore all the way to 4.600" and still be plenty thick.

4.600" x 4.500" would be a 598" combination.

Tom

Heck yeah!

 

[MOPARMAGA]

I think a lot of them will be 4.500" x 4.500" for a 572" combination.





I didn't mention it, but they told me the block will bore all the way to 4.600" and still be plenty thick.

4.600" x 4.500" would be a 598" combination.

Tom

That is AWESOME !

 

[RustyRatRod]

If you can offset grind the crank to 4.6 you got 611 cubes. lol

 

[Garrett Ellison]

Or just add the “7/8” stroker crankshaft.
Callies Performance GER-62L-CS Callies Compstar Crankshafts | Summit Racing
I’m aware of some 1 inch stroker, or 4.75 stroke crankshafts out there on a custom order basis.

 

[plymouth4onthefloor]

I'm dreaming of a shared block of many companies including Mopar Performance castet in the USA from the steel companies

 

[Garrett Ellison]

4.56 is typically the comfortable maximum bore size for a KB based block, so 605 cubic with the 7/8 stroker and a set of well worked B1 or Indy heads could make some huge output with a “close to shelf piston design.” But, at that point, you’ll start pushing the envelope or reliability that can be expected with the paired center exhaust valves. Hence the need the need for the Hemi version…

 

[PROSTOCKTOM]

4.56 is typically the comfortable maximum bore size for a KB based block, so 605 cubic with the 7/8 stroker and a set of well worked B1 or Indy heads could make some huge output with a “close to shelf piston design.” But, at that point, you’ll start pushing the envelope or reliability that can be expected with the paired center exhaust valves. Hence the need the need for the Hemi version…

At that point 95% of the guys on this board wouldn't have a car that could handle that torque output.

Tom

 

[RustyRatRod]

At that point 95% of the guys on this board wouldn't have car that could handle that torque output.

Tom

Or the dough to even build the engine.

 

[MOPARMAGA]

Or the dough to even build the engine.

Yeah.

 

[Ottmundr]

Or the suspension and brakes to control it.
Or the skill to drive it.
Or the willpower to refrain from melting tires...