Gen 2 Voodoo block for Coyote build

[4sdvenom]

Anything specific to look out for or be aware of if using a Gen2 Voodoo 5.2 liter block for a 5.2 liter Coyote build? Would it have any strength benefit over a Gen 3 Coyote block bored and sleeved for a 5.2 build? I’m assuming It will require a Predator 5.2 crankshaft either way to achieve the 5.2 liters. It will be going In a 2019-20 Mustang GT and will be getting a mid mount twin turbo set up with a 10r80 trans. I’ve seen several used Voodoo blocks in the $700-800 range that would require sleeves in order to be used.
Just wanted to see if there is a strength benefit with a sleeved 5.2 Voodoo block verses a sleeved 5.2 gen3 Coyote block.
1250+ rwhp goal
Thanks
Ken

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[Plimmer]

You can use the 5.0 crank in the 5.2 block without issue. 5.0 heads bolts up no problem as well.

Your problem will be getting DI pistons with the little dish in the middle, those might need to be custom for the 5.2 bore.

 

[engineermike]

The voodoo pistons have the same “gdi cup” which isn’t actually a gdi cup. It’s a clearance pocket for the spark plug.

 

[Angrey]

Wouldn't you have shrouding issues putting a head made for a smaller bore on a bigger bore motor?

 

[EFI]

Wouldn't you have shrouding issues putting a head made for a smaller bore on a bigger bore motor?

Putting a small head on a big bore is not an issue. Valve shrouding is when you put a big valved head on a small bore.

If you're going to sleeve it, any of those would be fine. If you ever get to point where you have too much power for the block itself (not the sleeves) then either would fail and you'd need an iron or bear block a that point.

 

[engineermike]

I’ve heard for years about shrouding issues. I don’t doubt that it’s the case but I think in most cases a larger valve will flow more because the shrouding is just in one location while the rest of the valve skirt area is improved. Back in the day I ran a 2.02/1.60 valve combo on a 305 sbc. That leaves less than .040” between the valves and cylinder wall but it still made more power than smaller valve heads. That said, the larger valve would perform better still if not shrouded.

 

[4sdvenom]

Thanks for the replies! So no extra holes needing plugged or anything like that! For example when using a teksid or aluminator aluminum block for a 2003 Cobra build, there is a hole needing plugged in the front and another is needed added (drilled and tapped) for the front engine cover over the timing chains/gears to bolt up correctly.
Used to the 4.6 mod motors so I'm still getting familiar with the Coyote generations as well as the Voodoo.
Thanks
Ken

 

[olaosunt]

I have the set up (Gen 2 voodoo block / voodoo pistons /Gen 3 coyote heads ) waiting to swap in my 18 /GT whipple . I used a boss crank which has a smaller stroke
than the 5.2 CP/voodoo crank so compression ratio will be down to 11.9 and you will lose a little bit of quench

 

[olaosunt]

Any Gen heads (1-3) will work.
@80FoxCoupe has Gen 2 heads on his .
(sleeved ).

I am building another one(with Gen 3 heads ) but this time with Gen 3 coyote specific pistols /Boss crank so I keep the 12.1 compression and don’t lose the quench

 

[4sdvenom]

Do you have any build threads going on? I'm definitely interested in following your set up.
Thanks
Ken

 

[olaosunt]

i also have another SB with the predator block (slightly different from the Gen 2 voodoo), Gen 2 voodoo pistons/Mahle drop ins, and the predator/5.2 crank so i get to keep the 12.1 CR and don’t lose any quench.

I am keeping it as a ”spare“ that I could use with Gen 3 heads (for my 18 ) or Gen 2 heads (for my 2 15’s) but I will most likely put a set of GT 350 heads on them./Ford racing /predator cams/GT 500 cam covers /oil pump /pan —- and voila - high compression predator motor .

 

[4sdvenom]

Very nice!

 

[olaosunt]

Do you have any build threads going on? I'm definitely interested in following your set up.
Thanks
Ken

https://www.mustang6g.com/forums/threads/another-gen-5-whipple-thread.120128/page-12

 

[4sdvenom]

What I really would like to do is find someone that could custom cut a set of '18+ cams to match up with the flat plane crank in the Voodoo. Build a Voodoo/Gen3 Coyote hybrid so to speak to have a DI/PI flat plane crank 5.2. I'm sure there would be other obstacles that would pop up, but it's fun for me trying to "figure it out" for the most part just in case I would want to try it! I know to probably 98% of the people on here it would seem pointless, and not worth the effort but it's the kind of stuff I get to thinking about when I have to much time on my hands. Like swapping a 10r80 into a GT350. There is far more to that then it even sounds to make it work but I've figured out about 90% of that! Like I said, to much time on my hands, since I've been off work the last 6 weeks with another 4 weeks to go for a rotator cuff and partially torn tendon repair.
Thanks
Ken

 

[4sdvenom]

https://www.mustang6g.com/forums/threads/another-gen-5-whipple-thread.120128/page-12

Thank you sir!

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