DX based Stroker Cranks

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Old May 27th, 2020, 10:41 AM
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DX based Stroker Cranks

Looks like this has become a new project of mine.
I had a couple of people contact me over on Facebook requesting me to do a large main small block stroker crank that will drop right into the DX block.. It seems this is moving forward. Price will be about the same as the gas based Stroker cranks, around $1850.00. These will be a great alternative to using the 50 year old 400/425 crank or buying a much more expensive custom billet at a cost of over 3k.
Let me know if anyone may be interested as these will take 4-5 months to get.

Last edited by cutlassefi; May 27th, 2020 at 10:43 AM.
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Old May 27th, 2020, 03:17 PM
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Mark, what kind of stroke are you talking about? I'm likely interested.
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Old May 27th, 2020, 04:16 PM
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Mark do you need a deposit? You are talking a 4.O stroke right?

Last edited by wr1970; May 27th, 2020 at 04:19 PM.
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Old May 27th, 2020, 04:41 PM
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Originally Posted by joe_padavano
Mark, what kind of stroke are you talking about? I'm likely interested.
Yes 4.00” same as my gas journal one. I have to keep the mods to a minimum otherwise they have to do a new drawing etc.
Mains, seal surface, flange, and snout are all Olds dimensions. Rod journals are SBC/LS so there’s a ton of rod choices. I currently sell a crank, rod and piston package that yields about 9.8-10.0:1 with bb or aftermarket heads. And yes I need a majority deposit upfront as these are a deviation from what I’ve been doing already.
Let me know Joe. Thanks.

Last edited by cutlassefi; May 27th, 2020 at 04:45 PM.
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Old July 14th, 2020, 12:52 PM
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Mark will this crank work in a d block or just a dx block thanks
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Old July 14th, 2020, 02:32 PM
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Originally Posted by jmcghee
Mark will this crank work in a d block or just a dx block thanks
Wow really d and DX same journals for mains. lifter bore is different d .842 DX .921 So yes would be the answer.
Sorry Mark just my filter is broke. Also sorry to OP if you think I am out of line.

Last edited by wr1970; July 14th, 2020 at 02:35 PM.
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Old July 14th, 2020, 02:45 PM
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Originally Posted by jmcghee
Mark will this crank work in a d block or just a dx block thanks
As Neeley said, yes it’ll fit in both blocks.
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Old July 15th, 2020, 08:53 AM
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Originally Posted by wr1970
Wow really d and DX same journals for mains. lifter bore is different d .842 DX .921 So yes would be the answer.
Sorry Mark just my filter is broke. Also sorry to OP if you think I am out of line.


I thought the crank would work.

I have wasted a lot of money by not asking enough questions Glad for the help
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Old July 15th, 2020, 10:19 AM
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Originally Posted by jmcghee
I thought the crank would work.

I have wasted a lot of money by not asking enough questions Glad for the help
Man ask anything anytime I bet you will get info . I was having a very very bad day i shouldn't even posted. Again glad you posted back.
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Old July 15th, 2020, 07:58 PM
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so, here is a question for those in the know.....

what are the exact differences between the D and DX blocks and Pros and Cons of both?
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Old July 16th, 2020, 06:41 AM
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Originally Posted by Battenrunner
so, here is a question for those in the know.....
what are the exact differences between the D and DX blocks and Pros and Cons of both?
D block is thicker in the web area than any gas block. Also has .842 lifter bores.
DX has the thickest main webbing of any Olds block. Lifter bores are .921. However all cyl thickness is about the same as none are siamesed.
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Old July 17th, 2020, 03:52 PM
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Originally Posted by cutlassefi
D block is thicker in the web area than any gas block. Also has .842 lifter bores.
DX has the thickest main webbing of any Olds block. Lifter bores are .921. However all cyl thickness is about the same as none are siamesed.
are these lifters available in both sizes?Or is it common to machine the lifter bores for a more common size?
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Old July 17th, 2020, 04:14 PM
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.842 is the std Olds size.
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Old July 17th, 2020, 04:35 PM
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Can you still get quality aftermarket .921 hydraulic Roller lifters?
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Old July 17th, 2020, 04:55 PM
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Originally Posted by cutlassefi
.842 is the std Olds size.
ok didnt know that .so the the d block got the standard .842 .so i guess my question is are the .921 lifters readily available ?
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Old July 17th, 2020, 04:57 PM
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Originally Posted by deadeyejedi
ok didnt know that .so the the d block got the standard .842 .so i guess my question is are the .921 lifters readily available ?
Yes both flat tappets and rollers. However the rollers are just std issue, nothing special.
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