TrickFlowTech

Hi Guys



We wanted to post some information for you about a new Trick Flow CNC 23 degree cylinder head we introduced last fall.



The test engine is an iron block, 4.060 X 3.75 stroke engine with a 5.7 rod=388 CID. Wiseco flat top pistons (10.4:1 compression), Trick Flow crank and rods, Trick Flow stage 3 hydraulic roller cam. We baselined the engine with a set of our 195 street/strip heads, which are a very good head for the money. With these heads and a small comp hydraulic roller, the engine made 484 HP@ 6000 RPM, and 464 ft/lbs @ 4800 RPM. Very nice, really streetable engine



As always, you can never have enough horsepower. We wanted to add our new 230 CC Super 23 CNC head, and a matched camshaft, to try to accomplish a few things:



We wanted to put a larger cam in the engine to kill off a little of the low end torque. Reason being that the car this engine is in (Al Noe’s 67 rs/ss Camaro) is autocrossed and low speed corner exit is a throttle dancing or dirt track driving experienceJ
We wanted to be able to rev the engine cleanly to 6500-6800 RPM. Same as above, being able to do this with the way the transmission and diff are geared will allow most autox courses to be run in 2nd gear with no 3rd gear changes
We also wanted to see if we could add 50-60HP with the head and cam swap. With the new heads and Cam, the engine made 533 HP @ 6500 RPM, and 476 ft/lbs at 5200 RPM.


While we were happy with the results, we also knew that the Holley stealth ram manifold was somewhat of a restriction. The height of the port is somewhat limiting due to where the injector bung is cast into the port. Even port matching the intake and making the port as tall as possible still left about 3/16” that the intake port overhangs the cylinder head-not optimal for max power………



Just to see how the intake was restricting things, we swapped a ported Edelbrock 2925 manifold, which matched the rather large 230 CC intake ports much better. The attached graph shows the results: The new intake allowed this combination to make 565 HP at 6800 RPM, while still making 465 ft/lbs of torque at 5200 RPM.



The engine is back in Al’s 67 Camaro, and is a ball to drive. It revs cleanly to 6800, and “pulls like a friggin freight train”. Al is hoping for mid to high 11’s, with the car in exactly the same trim as he autocrosses it and drives it to work as often as possible.



If you have any questions, please ask. While this cylinder head is a bit on the large side for a 388, we also have some excellent results from a 11:1 406 which I will also post later.



Trick Flow Tech

slow95z

iTrader: (33)

you want to throw me a set to test on my 12.5:1 350? j/k. but really, i'ld love to try a set to see the difference from my darts.

TrickFlowTech

Which Dart head are you using currently?
What camshaft?
Are you using nitrous? If so, how much?
How high do you spin the engine (7,500-8,000-8,500 or ??)?
What intake / carburetor are you using?

In most cases, a 230cc head is way too big for a NA 355" engine. The 215cc head would be the better choice...

bowtiescottsdale

could you post or PM me the 11:1 406 build specs?

slow95z

iTrader: (33)

the car is a strip toy not a driver, so i'm not worried about the bottom of the spectrum with the big runners. i have a lunati bracket master II cam(can't remember the specs right of but it was recomended by lunati for my engine), vic jr intake, holley 750 dp, currently a 3500 stall, and dart pro 1 215s. with 64 cc cambers and a .040 gasket it yields between 12.2-12.5:1 comp. oh yeah and spinning to 8000 rpms.

AutoRoc

Me too! I'm running a 396sbc, Comp. solid roller 254/260 @ .050" .620" cam on a 110, 11.5:1, Super Vic and Dart 230 Pro 1's. 7000 shift, 150-200 shot usually. Low 10's as is in the 1/4 @ 3500lbs. No clue what it makes for HP. 121mph N/A and 133+ on a 200 hit. Idles all day like a champ, drives like EFI. Would you reccomend your 230 CNC head for this street//strip setup? What cam specs did you come close to when you went for 500+hp? What would you reccomend? I'm in the same boat as Al Noe...Street/strip/auto-x? Thanks! Great to see new products out there at the forefront!


Thanks for supporting NMCA! I wear a Trickflow hat now and don't own any products...yet...

Pwebbz28

iTrader: (31)

You should be looking at the 18* heads then

slow95z

iTrader: (33)

already have the motor together and set-upp for 23* is the only problem with that.

TrickFlowTech

Here are the Specs for the 406….



406 CI BOWTIE W/SRP PISTONS 11.50 TO 1

TFS-3240T001-C03 Cylinder Heads

EDL-2925 Intake manifold

TFS-31404001Camshaft 630/630 266/270 @ .050

TFS-31400521 Roller rocker arms

slvr98camaro

iTrader: (1)

how does that deal with pump gas?

TrickFlowTech

The 406 was a race gas motor only.

slow95z

iTrader: (33)

what kind of price do these heads run?

AutoRoc

Oh wow....that's a nice looking "off the shelf" combo..I'm also interested in that head/cam combo!

BTW..my 11.5:1 engine with a smaller solid roller runs on 93-94 octane all day with full timing. Every engine is different though..

TrickFlowTech

Average retail pricing is $2199.95 assembled ready to go.

slow95z

iTrader: (33)

still cheaper than for my ls1! may have to buy a set and see how they compare.

alnoe

Slow95Z

The heads worked really well on my 388-I wanted to see how they would work on what in reality is a small bore (4.060) engine. The head has a pretty large intake runner, that we would not recommend for anything smaller, unless you plan to run a solid roller and spin it to the moon.

The new engine combination I have works really well. It makes really strong mid range and pulls really hard to 65-6800. I am going to the track in the next couple weeks, but it really is a nice combination for for what I wanted to do.

Al Noe
Trick Flow Specialties

slow95z

iTrader: (33)

thats all i will be doing mainly is strip racing, may very seldomly drive it to town.

alnoe

For mainly track use and occasional street use, it would work really well for what you want to do.

If you have a specific engine buildup in mind, PM myself or TrickFlowtech and either one of us will help any way thta we can.

Thanks!

6D9

iTrader: (1)

Keep us posted how it does at the track!!

436efi

I have been looking at these heads for awhile now. I was told by a couple of good engine builders to stay away from Trickflow, but the flow numbers for these heads are outstanding, especially on the exhaust side. It makes me wonder how accurate they really are. In any case, I have a 436 SBC, 400 .040" over 4" stroke In a street driven car that is N/A. Currently running a set of Brodix Track 1's with a good amount of work done to them. 11.7:1 comp, Edel 2925 intake, Bullet cam on a 112LSA with 247 and 256 dur @.050" and .610 lifts. Accel DFI system, Batch fire(OLD SCHOOL) 1 3/4 Headers, 700R4 trans with 3k (VERY TIGHT) converter, and 3.5 ratio out back on 28" tires. Car runs A best of 11.35 @120 with a 1.52 60 I shift at 58-6K. I have spun it to 6500 but it didnt go any faster. It went 11.39 @120. So would these heads help me get 10.80's? I ran the numbers on some dyno's and on some proven perf calculators, and it said it would. Very intresting........ How are these heads holding up so far?? Any valve problems? Valve seats ok? Guides? Deck? How are the springs?