New 440 Source 4.500" Bore RB Block

[PROSTOCKTOM]

Well if we want to get totally crazy how about going with a:

4.600" bore x 4.750" stroke and make a 632"

This would be a great way to test the integrity of the new block.

Tom

 

[TT5.9mag]

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.

I think you’re underestimating your block. I’ve seen a 400 based 451 make more than double what you’ll be making with a big single turbo. That being said, on freshen ups I’d look for signs of cap walk.

 

[MOPARMAGA]

I think you’re underestimating your block. I’ve seen a 400 based 451 make more than double what you’ll be making with a big single turbo. That being said, on freshen ups I’d look for signs of cap walk.

I hope so, I'm doing something about cap walk here in the next day or 2.

 

[autoxcuda]

I hope so, I'm doing something about cap walk here in the next day or 2.

Buddy bought a set of steel billet caps recommended by QMP Racing. Stout !

 

[RustyRatRod]

Well if we want to get totally crazy how about going with a:

4.600" bore x 4.750" stroke and make a 632"

This would be a great way to test the integrity of the new block.

Tom

You ain't kiddin. Even naturally aspirated.

 

[PROSTOCKTOM]

The girdle will take care of the cap walk, but the issue with the OEM blocks is they eventually start cracking from the mains up to the cam tunnel.

I seriously doubt this will ever be with the 440 Source block as thick as it's being made, and the higher quality gray iron they are using.

Tom

 

[MOPARMAGA]

Buddy bought a set of steel billet caps recommended by QMP Racing. Stout !

I'm staking or pinning 4 of 5 factory caps between the caps and registers.
I was going to do steel but I have faith in the factory caps.

 

[fishmens67]

Or the dough to even build the engine.

Don't forget the 1%, because they're around. lol

 

[RustyRatRod]

Don't forget the 1%, because they're around. lol View attachment 1716445326

How well I know. Heck, I'm glad somebody can do it!

 

[MOPARMAGA]

How well I know. Heck, I'm glad somebody can do it!

Give me another 140 years to save up and it will still be outta my reach lol.

 

[MILO]

My 440 -4- Speed only has 44 thousand miles so Im not ready yet