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Anyone ever try the BBC trick flow intake manifold? 540-565 ci

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Anyone ever try the BBC trick flow intake manifold? 540-565 ci

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Old 04-15-2019, 05:42 PM
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Default Anyone ever try the BBC trick flow intake manifold? 540-565 ci

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Old 04-15-2019, 06:12 PM
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Old 04-15-2019, 08:58 PM
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Think you may want to talk to articfriends see if he will help you.
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Old 04-15-2019, 10:00 PM
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Thanks, just never really hear anything on this one. Seems like I recall him back to back testing different intakes or may have been another member dynoing intake carbs etc 4150/4500 platform and intakes. I really like the brodix hv 2001 for runner length however seems like it was pretty much close to the merlinx with both being ported by Wilson I believe. I drop shipped to the Vic jr to Valako last year and he didn't care for the short runners although that intake always seems to do well. Close to the Merlinx. I am undecided at this point after I saw this trick flow a while back just thought I'd check. Whatever one I end up with the it will be ported and floors raised. Just want the most velocity I can get. I think SB mentioned years ago in the a and b class guys were running a lot of the brodix. I'm probably over complicating the issue but just want the best intake for my NA build. Merlinx always seems to be a winner for many when doing back to back comparisons but it's the Internet.
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Old 04-15-2019, 10:49 PM
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Buy them both run them on dyno and have all the work done and run them again but also get 3 cams to try t will donate some of the dyno time. Lol

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Old 04-16-2019, 02:06 PM
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I'm running the Brodix HV-2000 on my 524, motor seems to run really well from 3000-6000. My engine builder has tested a number of intakes and the Brodix seem to run better in the rpm range we see. Not many big boats running much more than 6000 rpm. Lots of material in the Brodix for port matching.
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Old 04-16-2019, 06:10 PM
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Originally Posted by getrdunn View Post
I think SB mentioned years ago in the a and b class guys were running a lot of the brodix.
yeh, it was a Brodix 4500 intake with a Brodix/HVH adapter/ plenum stuffer.I'll look up the part #;s again, even though Ithink thise was more a special deal for these motors (rules and performance / rpms) vs a 'this is aesome'for all BBC I/O's.

In the mean time here
Originally Posted by sb

Here's an example on data I ran for someone with a 540, AFR heads, 5600-5800 peak rpm:

Quote:
Pipemax:

To measure port length, measure top of port(Roof) and measure bottom(Floor) of port. Add together. Then divide by 2.

{use Scotch 3M 218 Fine Line Tape to measure Roof and Floor Lengths}

- Induction System Tuned Lengths - ( Cylinder Head Port + Manifold Runner )
1st Harmonic= 36.977" (usually this Length is never used)
2nd Harmonic= 20.987" (some Sprint Engines and Factory OEM's w/Injectors)
3rd Harmonic= 14.652" (ProStock or Comp SheetMetal Intake)
4th Harmonic= 11.532" (Single-plane Intakes , less Torque)
5th Harmonic= 9.357" (Torque is reduced, even though Tuned Length)
6th Harmonic= 7.872" (Torque is reduced, even though Tuned Length)
7th Harmonic= 6.794" (Torque is greatly reduced, even though Tuned Length)
8th Harmonic= 5.975" (Torque is greatly reduced, even though Tuned Length)
Note> 2nd and 3rd Harmonics typically create the most Peak Torque
4th Harmonic is used to package Induction System underneath Hood

Plenum Runner Minimum Recommended Entry Area = 3.194 to 3.593 Sq.Inch
Plenum Runner Average Recommended Entry Area = 3.672 Sq.Inch
Plenum Runner Maximum Recommended Entry Area = 3.751 to 4.439 Sq.Inch

Minimum Plenum Volume CC = 1157.9 [typically for Single-Plane Intakes]
Minimum Plenum Volume CID= 70.7 [typically for Single-Plane Intakes]
Maximum Plenum Volume CC = 8861.2 [typically for Tunnel Ram Intakes]
Maximum Plenum Volume CID= 540.7 [typically for Tunnel Ram Intakes]

================================================== ====

-- Cross-Sectional Areas at various Intake Port Velocities (@ 28 in.) ---
159 FPS at Intake Valve Curtain Area= 4.524 sq.in. at .640 Lift
181 FPS at Intake Valve OD Area and at Convergence Lift = .563
223 FPS 90% PerCent Rule Seat-Throat Velocity CSA= 3.221 sq.in. at 5600 RPM
350 FPS Velocity CSA= 2.051 sq.in. at 5600 RPM Port Sonic-Choke with HP Loss
330 FPS Velocity CSA= 2.178 sq.in. at 5600 RPM Port Sonic-Choke with HP Loss
311 FPS Velocity CSA= 2.311 sq.in. at 5600 RPM Smallest Useable Port CSA
300 FPS Velocity CSA= 2.395 sq.in. at 5600 RPM Recommended Smallest Port CSA
285 FPS Velocity CSA= 2.521 sq.in. at 5600 RPM Recommended Smallest Port CSA
260 FPS Velocity CSA= 2.764 sq.in. at 5600 RPM Recommended Port CSA
250 FPS Velocity CSA= 2.874 sq.in. at 5600 RPM Recommended Port CSA
240 FPS Velocity CSA= 2.994 sq.in. at 5600 RPM Largest Intake Port Entry CSA
220 FPS Velocity CSA= 3.266 sq.in. at 5600 RPM Largest Intake Port Entry CSA
210 FPS Velocity CSA= 3.422 sq.in. at 5600 RPM Torque Loss + Reversion
200 FPS Velocity CSA= 3.593 sq.in. at 5600 RPM Torque Loss + Reversion
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Old 04-16-2019, 06:46 PM
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Okay getrdunn, this was the post and page:
https://www.offshoreonly.com/forums/...ml#post4131692
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Old 04-17-2019, 06:28 PM
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Originally Posted by 14 apache View Post
Buy them both run them on dyno and have all the work done and run them again but also get 3 cams to try t will donate some of the dyno time. Lol
Quite honestly not out of the question. Hah. Why is it though I never hear of this intake on any builds. Probably at the end of a few dyno sessions one or the other might result in little less midrange and a little more up top. I like to try new things and chasing power. Just amazes me you can look at all the different single plane intakes and when ported properly they all end up with similar results. Some exceptions. I am tuning for 6,300-6,400.
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Old 04-17-2019, 06:41 PM
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Sorry I never got back to your PM. I actually believe when all said and done, the difference in the boat vs dyno will be negligible on which intake is better. All out race application, maybe...

From another thread to reference. I also believe these intakes are mated to Valako heads.

Originally Posted by BenPerfected View Post
I dyno'ed the Merlin back to back with the Brodix HV 2001. Both were port matched and balanced at Wilson Manifolds. Both were the same at the top and the mid-range was stronger on the Merlin. Pre-dyno testing, Wilson's comments was we were going to like the Merlin better in the boat...we do! Very strong on acceleration.
Originally Posted by BenPerfected View Post
I haven't done any recent work on a Dart single plane intake. Many of the old A & B Class racers used the Brodix HV2001. Most of my $ & time was spent with polishing on this manifold. I expect the Dart performance would be similar to both the Merlin and Brodix. Wilson's comments were the Brodix was too big. Like intake runners on cylinder heads, big generally means lazy, especially in the mid range in a marine application.
The Merlin has two basic advantages. It is smaller than the Brodix and provides more mid-range torque and the has the brass water jackets....hugh to me. Wilson's is a good place to go if you want to convert a $400 manifold into a $1500 one
Both these manifolds are way big at the port for most heads with a 308-325 cc intake runners. The port match work can be significant if you want them welded-up to maximize performance.
One other tip, best dyno results for my combination was a 1" carb spacer on the Brodix and 1.5" on the Merlin. HVH and Wilson both offer good spacers.
If anybody is interested, I also have a reworked Brodix HV 2001 port matched to a pair of Dart IE's 308's ported to 320cc by Sonny Leonard.
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