Author Topic: Trick Flow heads....  (Read 24840 times)

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351crules

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Re: Trick Flow heads....
« Reply #105 on: May 19, 2019, 06:46:40 AM »
Harland sharp rockers are recommended on the instruction sheet

wowens

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Re: Trick Flow heads....
« Reply #106 on: May 20, 2019, 06:25:16 PM »
Am I correct in asumming from this discussion that different rocker arm manufacturers, even if they all use the same ratio of say 1.6 to 1, use different lengths as measured from the shaft centerline to pushrod ball center and valve contact point and not the OEM measurements ?
If that's true, no wonder geometry is all over the place.
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Falcon67

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Re: Trick Flow heads....
« Reply #107 on: May 29, 2019, 09:08:54 AM »
Balance of CC article - Page 1
« Last Edit: May 29, 2019, 09:11:21 AM by Falcon67 »

Falcon67

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Re: Trick Flow heads....
« Reply #108 on: May 29, 2019, 09:11:42 AM »
Balance of CC article - Page 2

Falcon67

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Re: Trick Flow heads....
« Reply #109 on: May 29, 2019, 09:12:10 AM »
Balance of CC article - Page 3

machoneman

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Re: Trick Flow heads....
« Reply #110 on: May 29, 2019, 11:02:19 AM »
Thx Chris. Still, a little hard to read even expanded.

Do I take it they didn't alter the head's pads or cut the stands at all?
« Last Edit: October 07, 2022, 07:44:53 AM by machoneman »
Bob Maag

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Re: Trick Flow heads....
« Reply #111 on: May 29, 2019, 11:52:16 AM »
It says the raised position “solved” some problems.
Solved?
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thatdarncat

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Re: Trick Flow heads....
« Reply #112 on: May 29, 2019, 12:48:54 PM »
Thx Chris. till, a little hard to read even expanded.

Do I take it they didn't alter the head's pads or cut the stands at all?

Andy F. who wrote that article replied on page 3 &  5 of this thread that no machining of the pads or stands was done on the engine in the article.
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machoneman

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Re: Trick Flow heads....
« Reply #113 on: May 29, 2019, 01:01:03 PM »
Thx Chris. till, a little hard to read even expanded.

Do I take it they didn't alter the head's pads or cut the stands at all?

Andy F. who wrote that article replied on page 3 &  5 of this thread that no machining of the pads or stands was done on the engine in the article.

Wow, that's amazing as how does only one rocker system work w/o machining.
Bob Maag

67428GT500

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Re: Trick Flow heads....
« Reply #114 on: May 29, 2019, 08:53:15 PM »
They don't look like they have the correct geometry from the pictures. My Dove's sit dead center and have about a .045 witness mark on the valve stem. Those look as if they are riding the furthest point out on the stem.

WerbyFord

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Re: Trick Flow heads....
« Reply #115 on: May 29, 2019, 09:15:20 PM »
Wow, nice thread (long).
My biggest pet peeve with the article was that the basics weren't given in either the July or August issues, like compression ratio (10.8, given online but not in the magazine we pay for) and cam specs for the Comp XR292R (not even listed for FE on Comp's website). Then again, dyno articles in the good old days didn't give cam specs either, and stuff like .050 duration or even .100 duration didn't exist.

https://www.hotrod.com/articles/new-product-overview-ford-fe-heads-trick-flow/#dsc_1831-jpg

http://www.compcams.com/Company/CC/cam-specs/Details.aspx?csid=1028&sb=2

As the Gonkulator compares all the FE heads these come out right there with the leaders of the pack which is highly commendable.
And, I get the idea of having longer valves for more lift & spring, and longer pads for more threads.
But those things also make it a Race Head, as the 5-6 pages in this thread show.

Why not offer a "Real Street Bolt On No Kidding" version of these heads, shorter valves, factory pad heights, so that stuff like the good old factory rocker setup will bolt on?
Seems it would vastly open up the potential market for these otherwise great heads.

« Last Edit: May 30, 2019, 06:34:58 AM by WerbyFord »

Falcon67

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Re: Trick Flow heads....
« Reply #116 on: May 30, 2019, 08:09:42 AM »
Thx Chris. till, a little hard to read even expanded.

Do I take it they didn't alter the head's pads or cut the stands at all?

Andy F. who wrote that article replied on page 3 &  5 of this thread that no machining of the pads or stands was done on the engine in the article.

The 2nd paragraph says "the intake manifold needed to be machined for pushrod clearance and so did the bottom of the rocker arms".  Depends on how you read it I guess.  No other details on the machining provided.

Also had a bit of a "moment" about the statement on the 3rd page that "...a few guys who couldn't wrap their heads about an FE engine making 700 hp on pump gas."  Must be comfy under that rock.

Posted the pages because I didn't really have time to type all that info.  TL-DT  (too long - didn't type)  ;)
« Last Edit: May 30, 2019, 08:12:35 AM by Falcon67 »

machoneman

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Re: Trick Flow heads....
« Reply #117 on: May 30, 2019, 08:54:10 AM »
Thx Chris. till, a little hard to read even expanded.

Do I take it they didn't alter the head's pads or cut the stands at all?

Andy F. who wrote that article replied on page 3 &  5 of this thread that no machining of the pads or stands was done on the engine in the article.

The 2nd paragraph says "the intake manifold needed to be machined for pushrod clearance and so did the bottom of the rocker arms".  Depends on how you read it I guess.  No other details on the machining provided.

Also had a bit of a "moment" about the statement on the 3rd page that "...a few guys who couldn't wrap their heads about an FE engine making 700 hp on pump gas."  Must be comfy under that rock.

Posted the pages because I didn't really have time to type all that info.  TL-DT  (too long - didn't type)  ;)

Ah, got it as they did machine the rocker (stands). Thx.
« Last Edit: May 30, 2019, 12:49:28 PM by machoneman »
Bob Maag

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Re: Trick Flow heads....
« Reply #118 on: October 06, 2022, 04:52:31 PM »
Apologies for resurecting this old topic, but I wondered if anyone might have discovered a final resolution to the TFS heads/rocker issue? I heard BLykins mention in one of his videos that Precision Oil Pumps offers already machined/made to fit rocker stands, however I was unable to find this on their website (I'm admittedly a newbie with all this). If Precision does indeed offer these, would someone please direct me to where they can be purchased? Thanks in advance!

blykins

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Re: Trick Flow heads....
« Reply #119 on: October 06, 2022, 05:01:01 PM »
I've done more builds with the TFS heads than I can remember at this point. 

What it boils down to is which rocker arm system you use.  The Harland Sharp complete adjustable rocker system seems to bolt on without any issue.  Most other rockers I've used will require some stand work. 

These are fairly new with Precision Oil Pumps.  Just call them and have him send you a set. 

I've also arranged with POP to offer 1/4" longer stand studs for TFS heads.  They have a 1/4" longer base thread, for more thread engagement for extra spring loads.
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