Trick Flow FE head preliminary observations....

[blykins]

I've had my heads here for the past few weeks but haven't had a time to really mess with them.  The day they came in I poured a chamber and an intake port.  They measured 69.8cc and 169.8cc respectively.  Poured the chamber with an Autolite 3924 plug.

Had them on an SF600 today with a Brzezinski 1206G entry plate with a little clay to transition it.  4.155" bore.  Exhaust was flowed with no pipe.

.1  96  66
.2  159  120
.3  233  164
.4  283  197
.5  317  215
.6  333  220

I noted the same observation as Blair....intake port started to go turbulent and there was an obvious sound change headed into .600" on the intake side. 

I will stick them on a 390, but it will be a bit.  At this point, I must say, that I'm impressed as this is not what I'm used to seeing with Trick Flow parts.   Normally, they flow advertised numbers with the spark plug out....  I will eat a little crow on this one. 

A few other notes:

Nice shape chamber with a nice blend on the spark plug hole.  Chambers are a little small in comparison to what we're usually seeing with Barry's heads, BBMs, Edelbrocks, etc.  For a guy with pistons setup for a 74-75cc chamber, there will be a significant compression bump if these heads are used.

I would be interested in buying these bare from here on out, if I choose to use them for builds, so I can have control over the valve spring/retainer package. 

Pictures are on my Instagram......

[chilly460]

Thanks for sharing the info, Brent.  Just as an FYI, if you average the .200-.600 intake flow numbers, the TFS, the FECA published, and your numbers come in at 264, 265, 265cfm respectively, so pretty consistent. 

 

[garyv]

Those are some nice low lift numbers.
I can see them selling a bunch of them.
garyv

[scott foxwell]

I've had my heads here for the past few weeks but haven't had a time to really mess with them.  The day they came in I poured a chamber and an intake port.  They measured 69.8cc and 169.8cc respectively.  Poured the chamber with an Autolite 3924 plug.

Had them on an SF600 today with a Brzezinski 1206G entry plate with a little clay to transition it.  4.155" bore.  Exhaust was flowed with no pipe.

.1  96  66
.2  159  120
.3  233  164
.4  283  197
.5  317  215
.6  333  220

I noted the same observation as Blair....intake port started to go turbulent and there was an obvious sound change headed into .600" on the intake side. 

I will stick them on a 390, but it will be a bit.  At this point, I must say, that I'm impressed as this is not what I'm used to seeing with Trick Flow parts.   Normally, they flow advertised numbers with the spark plug out....  I will eat a little crow on this one. 

A few other notes:

Nice shape chamber with a nice blend on the spark plug hole.  Chambers are a little small in comparison to what we're usually seeing with Barry's heads, BBMs, Edelbrocks, etc.  For a guy with pistons setup for a 74-75cc chamber, there will be a significant compression bump if these heads are used.

I would be interested in buying these bare from here on out, if I choose to use them for builds, so I can have control over the valve spring/retainer package. 

Pictures are on my Instagram......

What happens after .600? Do they fall hard and never recover or do they recover a bit?

[chilly460]

TFS Published 2.19   
72   63
151   117
238   171
284   219
317   239
332   245
338   249

FE Club Test 4.250"   
0   0
159   103
233   157
286   200
320   227
327   235
325   239

Lykins 4.155" bore   
96   66
159   120
233   164
283   197
317   215
333   220