So decided Im going to purchase oem heads....problem. I went in and bought 2 heads one was black and the other was natural finish. I came home and mic both heads, the black head mics 3.740, the natural finish one 3.726, so after driving around town and looking at 2 different heads from different dealers the best I could find was 3.733. Dealers are saying they think most are remans wtf. So I'm having them order another couple sets I can check, granted I'm still wondering if the cores they're using for remans aren't cracked. Anyone have experience with this finding used cores has proven to be a total waste and now new from the dealer heads? I wanted to install hardened seats and a set of springs too.
6.4 head options
- Thread starter gorace
- Start date
sideactiondiesel
Member
Hahah been going on for years there is no such thing as new anymore lol. Check valve recession as well we have seen some real winners in this department.
78f100
Active member
I ordered 4 sets one time to get 2 heads just slightly under spec... the book says minimum thickness is 3.74, you will hardly never find one within spec that's a reman. My parts guy says there is no difference in part #s for reman or new, they are all basically in the same piles you never know what you get.
Have I said I love my 6.4 yet, I mean I like a challenge but I thought the dealer was the place to specially with what they charge for a head. Starting to feel like going aftermarket, since I'm installing hardened seats anyway? Any thoughts on that, I'm sure they have issues too.
jus10keith
New member
Navistar was machining "service" heads for the 6.4L up until they shut down the V-plant in Huntsville in 2014. They were sent to Cat-Reman and divvied up between whatever dealership ordered them. Also, as an FYI, they ran 6.0L until then too, just in a limited capacity.
If you're talking about the 2011 up CGI block 6.4L, NO. totally different intake side on the head and no glow plug holes either. The valley area of the block is completely different also. (It was actually referred to as a 6.5L to differentiate between models.) If you're asking about the 08-10 6.4L Nav engines, same head and same block as Ford 6.4L.
If you're talking about the 2011 up CGI block 6.4L, NO. totally different intake side on the head and no glow plug holes either. The valley area of the block is completely different also. (It was actually referred to as a 6.5L to differentiate between models.) If you're asking about the 08-10 6.4L Nav engines, same head and same block as Ford 6.4L.
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Airfish has these for sale.
http://powerstrokearmy.com/forums/showthread.php?t=70055
If he's 100% confident in his machine shop on no cracks I think it's as good of a option as ford remans. JMO.
Several 6.0 guys are saying they've had good luck with UCF heads also. I would stay away from aftermarket heads.
http://powerstrokearmy.com/forums/showthread.php?t=70055
If he's 100% confident in his machine shop on no cracks I think it's as good of a option as ford remans. JMO.
Several 6.0 guys are saying they've had good luck with UCF heads also. I would stay away from aftermarket heads.
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ncollins64
Well-known member
So can we not buy NEW heads anymore for the 6.4 like we can blocks?
weekendwarriorfsw32
New member
webb06
Active member
So if the valves have been properly recessed and shortened with new seats and guides does the overall thickness matter?
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78f100
Active member
The bare blocks maybe you can still get new, short blocks are almost always a reman also, they are spray welded and bored back to factory spec.
ncollins64
Well-known member
Yea last time I talked to Morgan about this he can still get NEW bare blocks. Hope this is still the case.
Luke@MillerPerformance
Member
Last set of 6.0 heads I got from Ford took 3 sets to get two good ones. Both ended up being bare metal, no paint.
One painted one it looked like the mill started jumping, half the head had 1/8th inch dips in it. 2 others were .006 warped and the guides were junk.
One painted one it looked like the mill started jumping, half the head had 1/8th inch dips in it. 2 others were .006 warped and the guides were junk.
Yeah well I took both back and I'm going with a set of ucf heads, this is basically what the 6.4 situation has come too. Ford makes a shop manual that says not to resurface the heads but it's okay if they do it, and I'll also add one head was off by .0005 from one side to the other, and 2 were warped. Parts manager was not very happy either he said there was nothing wrong with the heads that's what they put on all the trucks that come in. Cooooool!
Luke@MillerPerformance
Member
It's pretty sad what passes for acceptable and will work long enough to get it out of warranty. There have been plenty of trucks I take apart and I'm amazed it was running like that, but they do. There's a lot more give in valve train parts that are only moving at a max of 1600 rpm vs. a small block gasser that's got them moving at 4K.
