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Author
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Topic: Roller rockers for Twisted Wedge heads
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matt d
Journeyman Posts: 58
From: Coventry, CT USA
Registered: Mar 2003
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posted 02-19-2004 09:18 PM
  
I am setting up my Twisted Wedge heads on my 351W for use with a solid street roller cam (XE274R). I could use some suggestions on what the best roller rockers would be for my application. Valve spring seat pressure will be 200 lb seat and 500 lb open, and max RPM will be 6500 RPM.Harland Sharp makes a set specifically for TW heads that they sell through Fox Lake. I like the idea of the chromemoly Comp Cams Pro Magnums for strength. Any opinions? Also, do you really need a Twisted-wedge-specific roller rocker for TW heads? Thanks,
MAtt ------------------
66 coupe with: 351W, Comp Cams XE262H cam, Trickflow heads, Performer RPM intake, Edelbrock 600 carb, Ford roller rockers, Hooker Super Comps, Dr. Gas X-pipe with 2-chamber delta flows, Tremec TKO, Steeda Tri-Ax, 9" rear w/ 3.70s and a True-Trac limited slip, 5-leaf rear springs, 620s front, KYBs, shelby A-arm drop, Torque-thrust IIs, autopower roll bar with retractable shoulder belts, custom dash and electrical system
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n2oMike
Gearhead Posts: 2694
From: Spencer, WV
Registered: Jan 2001
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posted 02-19-2004 10:33 PM
http://www.trickflow.com/product/fordcylinderheads/twisted_wedge/pr_twisted_specs.asp
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Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220
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V8 Thumper
Gearhead Posts: 4652
From: Phoenix, Arizona
Registered: Dec 2001
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posted 02-20-2004 06:40 AM
quote:
Originally posted by matt d:
I like the idea of the chromemoly Comp Cams Pro Magnums for strength.
That's what I'm running on my TF heads. I'd called Trick Flow and asked if those rockers were compatible with their heads, they said yes  ------------------
1965 GT coupe, 333ci aluminum headed/solid cammed stroker, four speed, 3.70:1 9" All Blue Oval, no blue bottle
http://mustangsandmore.50megs.com/V8Thumper.html
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matt d
Journeyman Posts: 58
From: Coventry, CT USA
Registered: Mar 2003
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posted 02-20-2004 01:01 PM
I wonder why Fox Lake/Harland Sharp claim you should use TW-specific roller rockers (with an offset pushrod location I believe). Even Trick Flow says that standard small-block Ford roller rockers can be used.------------------
66 coupe with: 351W, Comp Cams XE262H cam, Trickflow heads, Performer RPM intake, Edelbrock 600 carb, Ford roller rockers, Hooker Super Comps, Dr. Gas X-pipe with 2-chamber delta flows, Tremec TKO, 9" rear w/ 3.70s and a True-Trac limited slip Adding now: XE274R solid roller, Fox Lake ported TW heads, Carb Shop 750 DP
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Von
Journeyman Posts: 81
From: Jay, OK
Registered: Oct 2003
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posted 02-20-2004 03:59 PM
SBC rockers can be used also. You might have to change your pushrod length, not sure. I was running a set of TFS TW heads and used the SBC rockers that Summit had their name on. Back then they were the Crane gold rockers, only black. Call me nuts, but the Chev. rockers are cheaper and easier to find. Like I said you might have to change pushrods, as my engine was built from the ground up, and I used new pushrods anyway.
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n2oMike
Gearhead Posts: 2694
From: Spencer, WV
Registered: Jan 2001
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posted 02-20-2004 09:50 PM
quote:
Originally posted by Von:
SBC rockers can be used also. You might have to change your pushrod length, not sure. I was running a set of TFS TW heads and used the SBC rockers that Summit had their name on. Back then they were the Crane gold rockers, only black.
The Chevy rockers are shorter from the fulcrum pivot to the roller than a Ford rocker. They will NOT provide proper valvetrain geometry on a head designed for a ford rocker arm. That being said... The very first TFS Twisted Wedge heads were built with a design flaw. It was nearly impossible to get decent rocker arm geometry with them. People were wearing out valve guides before their first oil change! One of the available fixes for these heads was to use Chevy rocker arms and different length pushrods. This would allow the geometry to get set within acceptable limits. Trick Flow finally fixed the design flaw, and invited people with the older heads to send them in for free to get the rocker geometry fixed. I had a set of the old heads (still do) and sent them back. They came back with some machining and a slightly different set of guide plates. That dates back to the mid 90's. Yes, I bought those heads when they first came out back then, and have still not run them. However, they will be making some noise this summer. Now you know! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220
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V-8
Gearhead Posts: 323
From: TURKEY/Istanbul
Registered: Dec 2003
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posted 02-21-2004 06:38 AM
Hey matt d; im running with TFS tw heads too.Im using Crane Energizer roller rockers with lash caps AND don't forget to use longer than stock pushrods...
_________________
ELEANOR
http://www.otospor.com/cowboys/67mustang.htm[This message has been edited by V-8 (edited 02-21-2004).]
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matt d
Journeyman Posts: 58
From: Coventry, CT USA
Registered: Mar 2003
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posted 02-21-2004 08:46 AM
Thanks for the feedback guys.I hope my TW heads do not fall into that category. I bought them in late '97/early '98 timeframe. They have about 5-10K miles on them and I couldn't tell of any valve guide problem.
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n2oMike
Gearhead Posts: 2694
From: Spencer, WV
Registered: Jan 2001
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posted 02-21-2004 03:54 PM
There should be a number at the Trickflow site you can call. They should be able to tell you if they are the 'early' heads or not. Again, I was able to send my heads in for FREE to get geometry fixed. They will probably need the serial number off the heads. Good Luck! ------------------
Mike Burch
66 mustang real street
302 4-speed 289 heads
10.63 @ 129.3
http://www.geocities.com/carbedstangs/cmml_mburch.html
http://www.fortunecity.com/silverstone/healey/367
http://www.mustangworks.com/cgi-bin/moi-display.cgi?220
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