426 stroker kit

Uhcoog1 said
Cuda srt8- the 440 uses a 4.25" stroke.
All ~426 builds use either a 4.05-4.08 stroke.
I have yet to see a 4.00" stroke. I think Andy offers one but I don't think it's a shelf item anywhere else.
Scat recently released a 3.90" stroke.

Options:
3.58
3.795- iron '392' using 6.1
3.900
4.05 - iron '426', iron 392 using 5.7
4.08 - iron '426', iron 392 using 5.7
4.125- not a regular shelf item- used in alum blocks mostly- aluminum block '440'
4.25 - (iron '440' crank)

In iron blocks:
The 4.25" stroke cranks are not used with boost. The 4.05-4.08 are, and are the most commonly used stroker cranks for those under 1000 rwhp. Lots of cars run the 4.05-4.08 with good longevity, including joelvan who road races his challenger in american iron series. For big boost and longevity, the 3.795 or 3.58 is used. The compression height of the pistons puts the pin into the third ring on the 4.05" and up cranks.

The 4.05/4.08" are considered 4" stroke cranks.

Everything I have read indicates the main concern with the longer strokes is crank strength (overlap), main strength, and piston deck height. Few discussions on 'scuffing' of pistons, mostly related to 4.25" stroke iron block 440's.

Emil's link to Andy's post is much more in detail.

Uhcoog,
This info is a good start for someone looking into a stroker, but it's all the typical info that's available on the internet. I disagree on some of your opinions though. Some of what you've stated is correct for someone building a budget stroker with an iron block. However, incorrect when you look at the bigger picture including the aluminum blocks.

A 4.00" stroke is a 4.00" stroke. You can't design an engine with such generalization, saying a 4.05 or 4.08 are considered 4.00". C'mon, you gotta know better than that!?!? And not all 426 builds use either the 4.05 or 4.08.

There's at least 2,3 or possibly 4, 4.00" cranks out there. Callies and Scat each have one and I think possibly Manley. Keep in mind you can use the 4.00" with a much bigger bore in the aluminum block vs. iron. The Mopar Perf. Gen3 426 uses the Callies 4" crank and rods. BTW, for what it's worth, Callies even has a 4.013"

Personally, I'm agonizing between getting an aluminum block and building a true 426 (w/4" crank) or use that crank in an iron 6.1 block I have and end up around 413" or so. I think the 4" with the stock 4.055 bore or maybe +.010 would be a great NA engine.

BTW, I'm not that impressed with PWR. There's a few other Hemi specialist shops I have a higher regard for...