Eagle 4.25" stroker crank

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Bobzilla said:
Pretty sure I saw an article saying Ritter is offering a version of his cast iron block to make that happen with P5 heads. Sounds pretty cool.
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You are correct. Ritter blocks can be ordered with the P5 bolt pattern.
 

tvt59 said:
Just think what a set of the P5 heads could do on a 4.25" stroke.....
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I have no idea what they flow but what I have seen of the heads in pictures, they look great.
 
rumblefish360 said:
I have no idea what they flow but what I have seen of the heads in pictures, they look great.
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i found this

When you combine all of those factors with MBE’s top-of-the-line ports, the result is a jaw-dropping ability to deliver air and fuel into the combustion chambers. We’re talking about 485 cfm through the intake ports and 299 out the exhausts! And remember, MBE is the only induction specialist in the industry willing to guarantee its advertised flow numbers.

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tvt59 said:
i found this

When you combine all of those factors with MBE’s top-of-the-line ports, the result is a jaw-dropping ability to deliver air and fuel into the combustion chambers. We’re talking about 485 cfm through the intake ports and 299 out the exhausts! And remember, MBE is the only induction specialist in the industry willing to guarantee its advertised flow numbers.

View attachment 1716371622
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Thanks. I don’t know who MBE is, but those are some really serious numbers.
 
Is Eagle the only one offering the 4.25" sbm crank these days beside like a custom high end Winberg or Crower unit?
 
B3422w5 said:
Molnar makes a 4.180 stroke, don’t think anyone else makes the 4.25
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K1 has a 4.25'' stroke. i looked it up last week. a friend of mine will be getting one of those big cranks shortly to put his all aluminum 477'' W8 together.
 
360duster said:
Hello Guys, just found out that Eagle has got a forged SBM crank with 4.250" stroke length:

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Anybody did a stroker with this one and could supply the used parts / info about how much clearance work was necessary in a production block?

Running a 4" stroke at the moment, just thinking about future upgrades.

Michael
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I HAVE ONE i just built with big gulp alum heads ready to install when I feel better, using 4 bbl. air gap intake cam 247-255 @.050 ,.613 lift 110 ls. in 116 ls. ex. my crank has 2.00 rod journals. std. mains. roller rockers of course. wish i knew someone to help since i just turned 80.
 
If it is functionally possible, you could offset grind the journals to the 1.88 Honda size and get real close to 4.5 inches.
 
Robert S. Haun said:
I HAVE ONE i just built with big gulp alum heads ready to install when I feel better, using 4 bbl. air gap intake cam 247-255 @.050 ,.613 lift 110 ls. in 116 ls. ex. my crank has 2.00 rod journals. std. mains. roller rockers of course. wish i knew someone to help since i just turned 80.
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Robert, where are you from? maybe a member here can help out occasionally....
 
9secRR said:
K1 has a 4.25'' stroke. i looked it up last week. a friend of mine will be getting one of those big cranks shortly to put his all aluminum 477'' W8 together.
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Wow, I’d love to see some pictures of that!
 
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