FE Power Forums
FE Power Forums => Non-FE Discussion Forum => Topic started by: winr1 on August 30, 2019, 10:51:00 PM
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Does an FE 4.5 look as such ??
Ricky.
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Are you asking about how far the crank and rod journals are offset? The lack of overlap?
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Yes, the overlap :-)
Trying to find a pic of an FE long stroke crank
Ricky.
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This has more inputs than you need, but it works.
http://www.wallaceracing.com/crank-journal-overlap.php
paulie
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Ricky, here is the longest stroke FE crank you are EVER going to see LOL! 4.750" stroke, stock main bearing size, 2.100" rod bearing size.
(http://fepower.net/Photos/Posts/4-75crank.jpg)
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Mr. Blutarski, that overlap looks to be ZERO-POINT-ZERO on the big FE crank :D
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Overlap is for cams LOL ;D
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That crank can reach out and touch someone. ;D
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Wow !! :D
Thanks Paulie
Thanks for pic Jay
Ricky.
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Someone is making a 390 into a 490.
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Can I install a 4.5 or 4.75 crank in my 390 block ??
An if so, a 4.09 piston would need to be custom made .. correct ??
Any vendors that can put a kit together as such and a rough cost ??
Mike Gaffney always told me to go big or go Home :-)
Ricky.
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Going over 4.375" stroke in a wedge FE means you will likely run into problems with the shoulders of the rods hitting the cam lobes. 4.500" stroke can be done but some grinding or clearancing of the rod shoulders will be required. The only reason I can use the 4.750" crank is that the engine is an SOHC. No cam lobes to hit.
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Ahhhh, thanks Jay :-)
EDIT: do rods with cap screws have more cam clearance than rods with bolts an nuts ??
I do appreciate all the answers an help to the questions I have asked here
Soon house/garage/yard will be finished an I can finally get to my 65 F100
Ricky.
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Looks like happy days are coming for ya Ricky.
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Aye, house finally leveled, roofers supposed to be here Monday
Then half of concrete driveway replaced, 4 piers on rear of garage, siding an paint
A bit of landscaping.... HOA will be off my but ..lol .... lookin for an acre or so with shop
And no HOA !!!! ......
Ricky.
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The neighborhood Gestapo, gotta love-em!!
Good luck on the acre and shop.
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I wonder if Jay has considered a flat-plane stroker crank? The vid below is long but it well explains the benefits and detriments of a flat plane crank. Seeing the huge FE stroker crank, I wonder how much lighter it would be as a flat crank. Given the benefits of the SOHC heads and high rpm potential, I wonder how much more hp could be achieved?
https://www.youtube.com/watch?v=rVG6TPNcaDY
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I wonder if Jay has considered a flat-plane striker crank? The vid below is long but it well explains the benefits and detriments of a flat plane crank. Seeing the huge FE stroker crank, I wonder how much lighter it would be as a flat crank. Given the benefits of the SOHC heads and high rpm potential, I wonder how much more hp could be achieved?
https://www.youtube.com/watch?v=rVG6TPNcaDY
Interesting, but flat plane 90 degree V-8's trade a bit more horsepower for A LOT more imbalance (especially for big displacement mills like this one). I'd be afraid of breaking the block at high rpm just from the inertia loads.
You also have to make a pair of custom SOHC cams to work with the new firing order. Admittedly, the thing would sound awesome!