O-Ring

5-0stank · February 5th, 2007, 03:33 PM

i am looking at getting trick flow heads with o-ring grooves (so i get the 1/2 in head bolt size for my 351w) and was just wondering what you guys have paid for o-ringing the block.

thanks

vfast · February 5th, 2007, 03:58 PM

why would you need to o-ring the block for..are you going to be using a 300+ shot or 20 psi on a turbo ..if not you don't need it

JOEYD0730 · February 5th, 2007, 04:59 PM

i wouldnt o-ring em, i the new gaskets out there are great and i have been told it not needed unless you are making more that 18psi of boost. in my current setup i do have the block o-ringed. i am in the process of having a 331 dart block built with afr's. without o-rings.

5-0stank · February 5th, 2007, 06:15 PM

the reason i wanted to is because the only trick flow heads that use 1/2in head bolts, in the config i want, use o-ring gaskets. would it be easier to just have the (7/16in) heads machined to use 1/2 in head bolts?

5-0stank · February 5th, 2007, 06:41 PM

or can i use o-ringed heads w/o o-ringing the block???

Darrell · February 6th, 2007, 01:30 PM

Don't get the o-ring heads. They are not needed. Just use a good MLS head gasket. I know guys running big superchargers and turbos that don't use o-ring junk. That is a thing of the past. What configuration do you want? Because as far as I know all TFS heads come drilled 1/2" and to use them on a 302 block you use the 7/16" bushings that they supply.

5-0stank · February 6th, 2007, 03:29 PM

im just lookin to buy a pair of the twisted wedge heads (non-cnc) with the dual valve springs for up to .600" lift with 1/2" head bolts....if you look on summit at TFS-51400005 and TFS-51400004, the TFS-51400004 dont have the bushings under the "suggested parts" this also agrees w/ the trick flow site

5-0stank · February 6th, 2007, 03:51 PM

5-0stank · February 6th, 2007, 04:00 PM

i talked to a guy at trick flow and there is a little restriction thing i have to drill out...so prob solved

Darrell · February 6th, 2007, 05:23 PM

It appears they don't use the bushings anymore.

Right off the TFS website:

NOTE:

Maximum camshaft lift with factory flat top pistons: Twisted Wedge: .540" lift; Track Heat: .600" lift

Check piston to valve clearance before installation

Stock stamped Ford rocker arms are not recommended

Dome-style pistons interfere with Trick Flow’s unique combustion chamber design. Conventional flat top or dished pistons will work

TFS-51400002, TFS-5140004, and TFS-51400010 heads use 7/16" head bolts. 1/2" head bolts can be used by drilling out restrictions

TFS-51400003, TFS-51400005, and TFS-51400011 heads use 1/2" head bolts

5-0stank · February 6th, 2007, 10:13 PM

yeah, thats why i was askin, haha

well, thank you for the help

February 5th, 2007, 03:33 PM	#1
5-0stank Enthusiast Join Date: Sep 2006 Location: emmaus, pa Posts: 508	O-Ring i am looking at getting trick flow heads with o-ring grooves (so i get the 1/2 in head bolt size for my 351w) and was just wondering what you guys have paid for o-ringing the block. thanks __________________ 1995 GT::Sold! Looking for another stang...

February 5th, 2007, 03:58 PM	#2
vfast Enthusiast Join Date: Aug 2005 Location: @ Fast Trak Enterprises Posts: 955	why would you need to o-ring the block for..are you going to be using a 300+ shot or 20 psi on a turbo ..if not you don't need it __________________ EVERYONE IS ENTITLED TO MY OPINION 6'ers are for kids 1965 chevelle SS 421 sbc 6 speed, 3.90 gears,alum d-shaft, brodix heads,roller cam,925 AED carb...grocery getter

February 5th, 2007, 04:59 PM	#3
JOEYD0730 Newbie Join Date: Feb 2007 Location: QUEENS, NEW YORK Posts: 41	i wouldnt o-ring em, i the new gaskets out there are great and i have been told it not needed unless you are making more that 18psi of boost. in my current setup i do have the block o-ringed. i am in the process of having a 331 dart block built with afr's. without o-rings. __________________ 91 Gt Convertible RNH Perfomance 331 dart stroker w s-trim http://i31.photobucket.com/albums/c3...0/HPIM0075.jpg dart stroker with s-trim, 91 vert

February 5th, 2007, 06:15 PM	#4
5-0stank Enthusiast Join Date: Sep 2006 Location: emmaus, pa Posts: 508	the reason i wanted to is because the only trick flow heads that use 1/2in head bolts, in the config i want, use o-ring gaskets. would it be easier to just have the (7/16in) heads machined to use 1/2 in head bolts? __________________ 1995 GT::Sold! Looking for another stang...

February 5th, 2007, 06:41 PM	#5
5-0stank Enthusiast Join Date: Sep 2006 Location: emmaus, pa Posts: 508	or can i use o-ringed heads w/o o-ringing the block??? __________________ 1995 GT::Sold! Looking for another stang...

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February 6th, 2007, 01:30 PM	#6
Darrell Feb 08 ROTM 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: Fond du Lac, Wisconsin Posts: 7,318	Don't get the o-ring heads. They are not needed. Just use a good MLS head gasket. I know guys running big superchargers and turbos that don't use o-ring junk. That is a thing of the past. What configuration do you want? Because as far as I know all TFS heads come drilled 1/2" and to use them on a 302 block you use the 7/16" bushings that they supply. __________________ Racing in memory of Dave Bandt 11/19/69 - 3/23/08 "he's traded his wheels for wings" Professor of Natural Aspiration Thanks to: Artie at Trick Flow, Dave at Team Z Motorsports, Brian at Total Engine Airflow and Harold at Furo Racecraft

February 6th, 2007, 03:29 PM	#7
5-0stank Enthusiast Join Date: Sep 2006 Location: emmaus, pa Posts: 508	im just lookin to buy a pair of the twisted wedge heads (non-cnc) with the dual valve springs for up to .600" lift with 1/2" head bolts....if you look on summit at TFS-51400005 and TFS-51400004, the TFS-51400004 dont have the bushings under the "suggested parts" this also agrees w/ the trick flow site __________________ 1995 GT::Sold! Looking for another stang...

February 6th, 2007, 03:51 PM	#8
5-0stank Enthusiast Join Date: Sep 2006 Location: emmaus, pa Posts: 508	__________________ 1995 GT::Sold! Looking for another stang...

February 6th, 2007, 04:00 PM	#9
5-0stank Enthusiast Join Date: Sep 2006 Location: emmaus, pa Posts: 508	i talked to a guy at trick flow and there is a little restriction thing i have to drill out...so prob solved __________________ 1995 GT::Sold! Looking for another stang...

February 6th, 2007, 05:23 PM	#10
Darrell Feb 08 ROTM 1990 Mustang LX 9.36@143 mph Join Date: Jan 2006 Location: Fond du Lac, Wisconsin Posts: 7,318	It appears they don't use the bushings anymore. Right off the TFS website: NOTE: Maximum camshaft lift with factory flat top pistons: Twisted Wedge: .540" lift; Track Heat: .600" lift Check piston to valve clearance before installation Stock stamped Ford rocker arms are not recommended Dome-style pistons interfere with Trick Flow’s unique combustion chamber design. Conventional flat top or dished pistons will work TFS-51400002, TFS-5140004, and TFS-51400010 heads use 7/16" head bolts. 1/2" head bolts can be used by drilling out restrictions TFS-51400003, TFS-51400005, and TFS-51400011 heads use 1/2" head bolts __________________ Racing in memory of Dave Bandt 11/19/69 - 3/23/08 "he's traded his wheels for wings" Professor of Natural Aspiration Thanks to: Artie at Trick Flow, Dave at Team Z Motorsports, Brian at Total Engine Airflow and Harold at Furo Racecraft

February 6th, 2007, 10:13 PM	#11
5-0stank Enthusiast Join Date: Sep 2006 Location: emmaus, pa Posts: 508	yeah, thats why i was askin, haha well, thank you for the help __________________ 1995 GT::Sold! Looking for another stang...

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