Click Here -> Please Consider Making a PayPal Contribution to the FordSix Forum!
2019 Contributors:
NJwpod, 1strodeo, mightynorseman, maxtrux, 6d7coupe, broncr, Phase3, 68Flareside240, bmbm40, mustang6, WorldChampGramp, justintendo, BigBlue94, ags290, motorsickle1130, Rooster, ousooner919, ethanperry, rzcrisis, DoctorC, jamyers, Motorboy, fastpat, Silverback280, chad, drag-200stang, THE FRENCHTOWN FLYER, Jimmys61falcon, rjonah, Sooshi, Robert92867, Invectivus


PLEASE TEST ON http://dev.fordsix.com

<<<***PLEASE READ*** New Site Update >>>

xflow valve info?

Moderator: Mod Squad

User avatar
XFlow_Fairlane
VIP Member
Posts: 2561
Joined: Tue Nov 12, 2002 9:44 pm
Location: Dayton, TN
Contact:

xflow valve info?

Post #1 by XFlow_Fairlane » Tue Nov 12, 2013 8:57 pm

I have a bare 250 xflow head I need to complete (but it is 800 miles away)

does anyone know the stock valve size, common oversize for the valves and the stem length?

I have a couple sets of SBC valves and retainers I was looking use.
Rule: Torque = Fun , Turbo's make Torque

CNC-Dude
Registered User
Posts: 1521
Joined: Wed Nov 19, 2008 6:06 pm
Location: N. Ga.
Contact:

Re: xflow valve info?

Post #2 by CNC-Dude » Tue Nov 12, 2013 10:22 pm

I've got one I can measure and see for you.
Image

CNC-Dude
Registered User
Posts: 1521
Joined: Wed Nov 19, 2008 6:06 pm
Location: N. Ga.
Contact:

Re: xflow valve info?

Post #3 by CNC-Dude » Thu Nov 14, 2013 9:04 pm

I have measured both the intake and exhaust valve from my stock Crossflow head, here are the specs:

Intake: 1.800" OD, 5.310" Length
Exhaust: 1.500" OD, 4.975" Length
Image

User avatar
XFlow_Fairlane
VIP Member
Posts: 2561
Joined: Tue Nov 12, 2002 9:44 pm
Location: Dayton, TN
Contact:

Re: xflow valve info?

Post #4 by XFlow_Fairlane » Fri Nov 15, 2013 3:10 pm

well crap.
Rule: Torque = Fun , Turbo's make Torque

User avatar
xctasy
VIP Member
Posts: 7066
Joined: Sat Nov 09, 2002 10:40 am
Location: PO Box 7072 Dunedin 9011,South Island, NEW ZEALAND
Contact:

Re: xflow valve info?

Post #5 by xctasy » Fri Nov 15, 2013 7:12 pm

The x-flow is a porcupine head, and uses cut down 335/385 valves and, in essence, Chevy Big Block valve gear, with similar hard dimensions to any of those canted valve small, medium and big block Ford engines made from 1969 to 1996 made engines. The Small Block Chev valves won't do it. For years, Ford's Windsor headed variations have used a variation of white box Small Block Chev valves, but the x-flow items are too tall to swap over, even with lash cups.
Image
XEC Ltd ICBE's Inter Continental Ballistic Engines-
FAZER 6Bi (M112 & EEC5) or FAZER 6Ti (GT3582 & EEC5) 425 HP 4.1L/250 I-6
FAZER 6V0 3x2-BBL Holley 188 HP 3.3L/200 I-6 or 235 HP 4.1L/250 I-6
X-Flow Engine Components Ltd http://www.xecltd.info/?rd=10

User avatar
xctasy
VIP Member
Posts: 7066
Joined: Sat Nov 09, 2002 10:40 am
Location: PO Box 7072 Dunedin 9011,South Island, NEW ZEALAND
Contact:

Re: xflow valve info?

Post #6 by xctasy » Fri Nov 15, 2013 7:12 pm

The x-flow is a porcupine head, and uses cut down 335/385 valves and, in essence, Chevy Big Block valve gear, with similar hard dimensions to any of those canted valve small, medium and big block Ford engines made from 1969 to 1996 made engines. The Small Block Chev valves won't do it. For years, Ford's Windsor headed variations have used a variation of white box Small Block Chev valves, but the x-flow items are too tall to swap over, even with lash cups.
Image
XEC Ltd ICBE's Inter Continental Ballistic Engines-
FAZER 6Bi (M112 & EEC5) or FAZER 6Ti (GT3582 & EEC5) 425 HP 4.1L/250 I-6
FAZER 6V0 3x2-BBL Holley 188 HP 3.3L/200 I-6 or 235 HP 4.1L/250 I-6
X-Flow Engine Components Ltd http://www.xecltd.info/?rd=10

User avatar
XFlow_Fairlane
VIP Member
Posts: 2561
Joined: Tue Nov 12, 2002 9:44 pm
Location: Dayton, TN
Contact:

Re: xflow valve info?

Post #7 by XFlow_Fairlane » Fri Nov 15, 2013 10:23 pm

I bought a set of heads for my chevy and one ended up being cracked. was looking at bare casting or fully assembled heads for the replacement and was looking to maybe carrying over the leftovers to my bare head.
Rule: Torque = Fun , Turbo's make Torque

mike1157
Registered User
Posts: 191
Joined: Sat Aug 03, 2013 9:55 am

Re: xflow valve info?

Post #8 by mike1157 » Sun May 04, 2014 8:35 pm

I just went through all of this for my X flow head. for my intake, I Found a BBC exhaust valve that was 1.880/5.300 long w/ a 11/32 stem. I had my machine shop turn the valve down to 1.800, otherwise it was the exact same length as the stock valve.
Used a SBC 1.5" exhaust valve that was 4.960 long same as xflow across the board.

Used BBC beehive springs , and they got installed at 1.800,..but I used a spring cup and a shim to get that, as the stock installed height is closer to to 1.900.
Additionally, I used a pushrod guide plate kit from Crane cams that fit the existing pedestal bosses, and the stud has a 5/16 coarse end that screws into the head, and a 7/16 fine thread other end for the rocker. I ended up having my head tapped to 3/8 and used a different stud that I modified as my cam is a solid roller, and I wanted a stronger stud anchor for the rocker.

I used a Comp Cams 1.73 roller rocker for BBF on top of that.
1978 Ford Fairmont Futura project: "The Gila Monster" Xflow'd Megasquirted, MPFI'd, DIS, T/C'd, A2WI/C'd 250, 4R70W shifted, and 8.8, 3.55 gear rearended.

Who is online

Users browsing this forum: No registered users and 2 guests