Purple shaft with stock stamped rockers are the HOT ticket right now.

Great Andy looking forward to it.

I can provide some comparative data from Dwayne's current bench (a Saenz 600) tested on the same 4.375" bore:

A. My old PRH-ported MP Stage VIs w/ 2.14" intake valves and small 215 cc runners (w/o RB adapters added). On a 10.8:1 CR RB 452 short block using a modified MP M1 intake, my BG "825" carb, 2" headers and a 266 at .050" x .600" x 108 LSA SFT cam, it made around 610 HP & 570 Tq on Dwayne's dyno.

Lift -- Int / Exh (no flow tube)
.100 --- 69 / 53
.200 -- 143 / 108
.300 -- 213 / 146
.400 -- 262 / 181
.500 -- 293 / 211
.550 -- 305 / 222
.600 -- 307 / 231
.650 -- 307 / 237
.700 -- 307 / 243

B. My Hughes CNC-ported 1st-generation Edelbrock Victors w/ 2.20" intake valves and an estimated 270 cc runner volume (adjusted down about 40 cc for the built-in RB adapters). Like the Chapmans, these have raised ports and need special-offset intake rockers.

Lift -- Int / Exh (no flow tube)
.100 --- 75 / 58
.200 -- 169 / 109
.300 -- 237 / 157
.400 -- 280 / 201
.500 -- 318 / 229
.550 -- 329 / 239
.600 -- 341 / 246
.650 -- 347 / 253
.700 -- 345 / 256

At the same CR as the MP Stage VIs and the .650" roller version of the SFT mentioned above, I'll take a s.w.a.g. and say I'd expect to see 640+ HP from the Trick Flows on the same RB 452 short block as the Stage VIs were tested, between the different heads and switching to a roller.

But it's all just educated(?) guesses until someone puts 'em in service.

My bad, too many blue moons..........

Brad, didn't some combination of stuff we tried end up making like 625hp?

The CNC "standard" port Victors had quite a bit bigger port opening as I recall compared to a true std sized head.
These TF heads have port openings that look like a std valley pan gasket would seal up okay.

This particular set I have in the shop are going on a pump gas 505 with a solid cam and a 6bbl.

Here's the Chapman 260 standard Ports ( from the Tech archives)



These are the Chapman CNC'd MP Stage VI 260cc's:

Lift" I/E

.100--71.5/58.2
.200-150.0/118.6
.300-219.4/180.0
.400-278.7/219.4
.500-323.6/233.9
.550-338.9/240.3
.600-352.3/243.5
.650-348.5/246.7
.700-348.5/249.9
.750-348.5/251.5
.800-348.5/253.1

I think up to .450 the TW's are impressively close. 290cfm at only .450 is gonna be killer, you basically only need a very mild .525-.550 lift cam to easily cover 600hp, easy on the RPM/bottom end, easy on springs too

Yeah, my ported Victor intake, a 1" open spacer and your CFS "dyno mule" Holley made about 625 HP. The 610 HP I referenced was as I ran it in my car (my carb & my ported M1 intake because of hood clearance), so I can correlate that to the car's on-track performance.

A modified Victor on the TFs w/ the .650" RX roller... 650+ HP? (EDIT: The standard port location would even allow for running a Victor intake under my T/A hood )


Right; Hughes' "standard" CNC job still opens the entry to 2.40" x 1.30"; not MW, but definitely bigger than a standard valley tray port size. (EDIT: Found something that says the TF port entry is 2.270″ x 1.230... is this what you measured, too?)


Bet my ol' 440 6BBL RR would have loved that engine!

I agree, but just want to see what the numbers may be after a little hand work. I'm wanting something in the 320-325cfm at .600".

I hate to say this Andy but your DYNO numbers never show up in track times. Something in your corrections must be accrue. LOVE your products and use them but MOST dyno numbers are way out in left field almost as bad as the rag racing magazines. Hopefully track times will be posted early spring.

You don't have a clue what you're talking about. The dyno that I use sends a lot of engines to the track and the track times back up the dyno numbers. You live a couple of thousand miles away from me and don't know anything about the dyno that I test on or the engine shop involved.

Are the Trick Flows available w/stock straight plug design? Or are they all angled plugs? TTI headers in A-Body RB set up has a couple cylinders looking really close (visually) to accept angled w/out modifying.

Call Trick flow and let us know please

LOL - Yup, was going to call Friday

Uh oh!

Bill stepping it up a notch...

Someone needs to remake the Chapman heads.

I'd say to expect they're ALL angle-plug because it goes w/ how the chamber was designed.

You mean that still need RB adapters and sell for $2500+ each bare? I don't think so... They really missed the market for those.

Edelbrock could have nailed it w/ the Victors, only they didn't get it "right" either. At least you can still buy Victors and they priced them reasonably.

According to Trick Flow, they already are.

It seems every time a new product comes on the market there is always something about it that makes you scratch your head..... Like these harmless looking little squares cast into the decks of these new TF heads