link to interesting dyno test of brodix 200IK heads

grumpyvette

grumpyvette

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http://www.brodix.com/heads/ikdyno.html

4340 Callies Compsar Crankshaft
4340 Calies Compstar 6" Rods
ARP 2000 Rod Bolts
Internally Balanced
Counterweights Turned in a Lathe
J.R. Champ 7 qt Oil Pan
Louvered Windage Tray
Melling Oil Pump With Bolt-On Pickup
Carter Manual Fuel Pump
Barker Lite Weight Fuel Pushrod
Clevite Coated Bearings
MAHLE Forged Pistons
4.030 Bore
1.5/1.5/3 mm Ring Package
Flat Top 2 Valve Relief
The BRODIX IK 200 Pkg PT# 1021001 was Used on the Build-Up
200 cc Intake Ports
2.020 Int Valve
1.600 Exh Valve
1.470 Springs
(CC 977-16 Upgrade)
7/16 Studs
Torqued the Heads to 70 ft-lb
FEL-PRO 1003 Head Gaskets
Stock Length Head Bolts With Washers
STEWART Water Pump
COMP CAMS Hyd Roller Cam
Advertised Duration 293-299
.540 Lift Int--.562 Lift Exh
112 Centerline at 108.5....... very similar to this cam http://www.compcams.com/Company/CC/cam- ... d=191&sb=2
COMP CAMS Hyd Roller Lifters
COMP CAMS Roller Timing Chain
BARKER 7.150 5/16 Pushrods
CROWER 1.60 Int Rockers
CROWER 1.50 Exh Rockers
BRODIX HV 1016 Dual Plane Intake Manifold
MOROSO Intake Bolts
FEL-PRO 1206 Intake Gaskets
Carb -750 cfm HOLLEY
1 5/8 Stepped to 1 3/4 Headers
HVH Street Sweeper 1" Spacer
Manual Fuel Pump and Water Pump
MSD Distributor with TONY BARKER Spark Plug Wires
The Final Tuning Before the Last Run 37 deg Timing
After the First Pull on the Engine, the Power was Taking a dip Around 5000 rpm From Valve Float Between 5000-5600 rpm Then Smoothed up After 5600 rpm. We Upgraded the Valve Springs From the COMP CAMS 987-16 to the COMP CAMS 977-16 to Solve the Valve Float With Great Results.
Dyno Pulled From 2500-6500 rpm
Peak Power 568 hp at 6000 rpm
Peak Torque 542 ft-lb at 4700 rpm
Horsepower is Over 400 at 4000 rpm
Over 450 hp at 4400 rpm
Over 500 hp at 4800 rpm
568 hp at 6000 rpm
562 hp at 6500 rpm
Torque is Over 400 ft-lb at 3200 rpm
Over 450 ft-lb at 3400 rpm
Over 500 ft-lb at 3900 rpm
Over 540 ft-lb From 4600-4900 rpm
Still 497 ft-lb at 6000 rpm
All on Pump Gas
568 at 6000 rpm
542 ft-lb Torque at 4700 rpm
Pulled the Engine to 6500 rpm
All on a Stuska Engine Dyno
REAL NUMBERS!

dynorunbar.jpg


rpm



rpm ..... hp ......Torque
2500 130hp 273tq
2600 148 298
2700 163 317
2800 178 334
2900 191 346
3000 205 359
3100 221 374
3200 240 393
3300 266 423
3400 291 450
3500 321 481
3600 332 484
3700 341 484
3800 352 487
3900 366 493
4000 384 504
4100 402 515
4200 413 516
4300 424 518
4400 434 518
4500 453 528
4600 470 536
4700 485 542
4800 494 541
4900 505 541
5000 511 537
5100 517 535
5200 523 529
5300 529 521
5400 532 515
5500 535 507
5600 539 502
5700 544 501
5800 552 500
5900 561 500
6000 568 497
6500 562 461
 
Good #'s Grumpy.What cr & what stroke/ cid is the engine? With the smaller bore maybe a 383? How much did the Brodix 200 cc heads flow @ .500/.600 lift @ 28"H2o ,are the heads stock form or modified? I considered these same heads on my project.Later Kelley
 
Interesting that they used 1.6 rockers on the intake and 1.5 on exhaust. On my 55 sedan's 327 build, I selected a dual pattern cam before I bought the Brodix IK180 heads. A Brodix guy recommend I do the 1.6/1.5 thing, which I did (actually did 1.6/1.52). That tells me the heads don't need any help on the exhaust side. In my case, I ended up with .509"/.495" using Comp 981 springs installed at 1.700". I do plan to upgrade them to Comp's 1.25" beehive springs and retainers, because I may have a valve float issue above 5500 RPM. I'd appreciate any other ideas on springs. The spring seats are only ~1.25", but I'm not opposed to having them opened up if that's the best way to do it.
 
selecting valve springs that have the correct load rates and clearances , and matching the valve train components and valve train geometry is one of the most important and unfortunately most ignored factors in most engine builds.
never just rush out and buy components YOU THINK may be correct, because that's an excellent way to waste money, call the manufacturers and discuss your options and understand why they are suggesting them, before making any component purchase, as questions about required machine work, mandatory extra parts and the limitations on the combo with BOTH the old and new components BEFORE swapping parts.
theres most likely a 1.25" base spring that will allow the engine to reach at least 6000rpm reliably, but increasing the base to a 1.45"-1.47" gives you several more options
brodix listed these as an optional spring on those heads
1.470 Hydraulic Roller Valve Spring - CC 987,
125 lb Closed, 325 lb Open,
1.900 Installed Height,
.575 Maximum Lift
(IK 180, IK 200)

Id suggest you call both your cam and head manufacturers for their input , on optional spring options and suggestions, discuss your options because in many cases theres a reasonably easy and cheap option to increase the rpm of the stable valve train rpm levels
these guys have some great springs

http://www.racingsprings.com/


read thru these threads and sub linked info

viewtopic.php?f=50&t=903&p=10020&hilit=rope+adapter#p10020

viewtopic.php?f=52&t=181&p=7156&hilit=springs+beehive#p7156

viewtopic.php?f=52&t=1716&p=4248&hilit=+beehive+spring#p4248

viewtopic.php?f=52&t=3124&p=9141&hilit=+beehive+spring#p9141

viewtopic.php?f=52&t=663&p=911&hilit=+rockers+girdle#p911

viewtopic.php?f=52&t=401&p=8370&hilit=vortec+heads#p8370

http://sbftech.com/index.php/topic,15607.0.html


I often get asked whats a good way to boost the basically stock sbc muscle cars on a reasonable budget, well heres what works reasonably well on most 1985-91 corvettes as an example(obviously youll want to research exact part compatibility before buying components)
$2000 to spend


THESE HEADS
http://www.jegs.com/i/Brodix/158/1021004/10002/-1 ABOUT $1070)

these headers
http://www.jegs.com/i/Hedman/500/68446/10002/-1
ABOUT $350

Id get a KEVKO 7 qt oil pan,melling 99hvs oil pump and 1018-mpphvs pick up
about $300

comps rockers
http://www.summitracing.com/parts/CCA-1602-16/
about $350


http://forum.grumpysperformance.com/viewtopic.php?f=69&t=519

http://forum.grumpysperformance.com/viewtopic.php?f=56&t=1303



RY046L.jpg

http://www.kjmagnetics.com/proddetail.asp?prod=RY046


sum-900510.jpg


http://www.summitracing.com/parts/SUM-900510?autofilter=1&part=SUM-900510&N=700+115&autoview=sku

if you really want to keep tabs on engine condition, regular oil changes, having a magnet like this on the base of your oil filter and using a cutting tool designed to allow inspection of your oil filters after every oil change will provide you with a great deal of information and potentially prevent or at least alert you to potential minor problems, long before they become expensive major problems
filter2.jpg




filter4.jpg
 
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