PROJECT 427W, PART 6 THE DYNO RUN

THE DYNO RUN

 

Build, text and photos by Mike Mavrigian

  . Well, we finally ran this engine on dyno. The dyno location was Platinum Engine Designs in Norwich, Ohio, a clean-as-a-whistle top-notch race engine shop in southeast Ohio, equipped with a late-model SuperFlow engine dyno.

While performing the setup, I added 7.5 qts of 30W non-detergent oil along with 12 ounces of Comp Cams “break-in” additive (this provides a concentrate of ZDDP for high-pressure lubrication. Even though we’re running a roller cam and have no concerns about breaking-in a flat tappet cam, the zinc additive serves to protect valve stem tips when using high pressure springs. Basically, the addition of ZDDP is absolutely essential for a flat tappet cam, but it can help to protect additional contact areas, and can never hurt. Just add it as a matter of course. Since we needed to change the distributor gear over to bronze anyway, and to achieve more clearance between the distributor head and the front of the intake manifold, I swapped out distributors in favor of an MSD ready-to-run pro-billet distributor, P/N 8354, which we equipped with an MSD bronze gear (for compatibility with our billet Lunati roller cam). The ready-to-run distributor features a built-in ignition module and does not require an external MSD ignition control box. I’ll set the Performance Distributors’ Duraspark distributor aside for a future build. The MSD ready-to-run distributor is a nice upgrade from the bulkier Duraspark version. The billter aluminum housing is 5/8" smaller in diameter, providing much-needed clearance and compactness. The built-in module produces a 7.5 amp single spark through high rpm. The mechanical advance is easy to adjust with included springs and stop bushings. The vacuum advance canister provides improved economy but can easily be locked out. The maintenance-free magnetic pickup and precision reluctor creates stable trigger signals throughout the entire rpm range. The polished steel shaft is QPQ coated for friction reduction and is guided by a sealed ball bearing. The unit is supplied with a small-diameter cap with HEI (male) style terminals.


The MSD P/N 8354 Pro Billet Ready to run distributor features a built-in ignition module, requiring no external ignition controller box.

 


In order to ensure compatibility with our Lunati steel cam, we installed an MSD bronze gear to the MSD distributor. After the runs, I pulled the distributor to check for tooth condition (seen here). Condition was beautiful and the engagement wear pattern was peachy. Gear depth (from bottom of housing seat to bottom of gear) was set at 4.000".

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Because neither I nor the dyno shop had no previous experience with the Projection III EFI, I decided to initially run the engine with a carburetor (to establish base timing, seat the rings, verify oil pressure, check for leaks, etc.). Once we made a few initial runs, we’d then switch to the EFI. My early estimate in terms of horsepower was in the high 500 / low 600 HP range. I have to be honest and admit that we didn’t hit those numbers, and I freely admit that I made a mistake in terms of carb and cam selection. We initially ran the engine with a Demon 750 double-pumper 4-barrel carb. Our best pull was 516.9 HP at 5,900 rpm and 529.2 lb-ft at 4,100 rpm. It quickly became painfully obvious that the engine wanted much more than the 750 cfm carb could deliver (an ideal carb size would be 850 or even 900 cfm). However, the 750 was the only carb I happened to have on my shelf (if I had a bigger fuel/air bucket, I would have used it). .


Todd at Platinum Engine Designs fits our motor to his SuperFlow dyno.

 


Here the engine has been prepped and is ready for the initial fire-up. The dyno shop's exhaust headers featured 1 5/8" primary tubes, stepped to 1 3/4", with 3 1/2" collectors.

 


The MSD 8354 distributor features a small-diameter head, providing additional clearance at the front of the intake manifold.

 

After initial running, Todd adjusted total timing to 34 degrees. Throttle response was extremely quick.

  After verifying that the engine had no issues and ran like a watch, we then installed the Projection III EFI setup.  Our best pull with the EFI was 500 HP at 5,700 rpm and 517.5 lb-ft at 4,600 rpm. Lower numbers, granted, but I wouldn’t automatically blame the EFI system. The potential seems to be there, but more tuning time is needed. The Projection III EFI is a very cool system. The unit provides the appearance of a large 4-barrel carb while providing the crispness and tenability of an EFI system. Two fuel injectors reside inside each of the “fuel bowl” housings. Installation is not complicated at all. The throttle body unit bolts onto the intake manifold in the same manner as a carb. A main harness connects to power, ignition switch and coil. A dedicated oxygen sensor harness plugs into the supplied O2 sensor (a clamp-on or weld-on O2 sensor bung kit is included). A mini ECU is integrated onto the right side of the throttle body, so no external ECU is required. The fuel feed (supplied) consists of a dual feed -6AN log, with an already-installed pressure regulator. Fuel pressure recommendation is 45 psi. An aluminum in-line electric fuel pump is also included in the kit. Tuning the EFI can be accomplished either by adaptive learning (simply running the engine and driving the vehicle over a period of time/cycles prompts the unit to “self learn” to adapt to the engine’s operation), or by custom-tuning the system via the supplied software.


The Projection III EFI system from Professional Products includes everything required (wire harness, O2 sensor with harness and mounting bung, programming software, a very detailed instruction manual, coolant temperature sensor, USB cable for programming connection to a PC, electric fuel pump, pressure regulator and -6 fuel feed and in-line filter). The EFI installation and connections were a breeze.

 


A pair if injectors are hidden behind each "fuel bowl." This is a very clever design that allows you to display an "old school" appearance while taking advantage of electronic fuel injection technology.

 


The TPS (throttle position sensor) is built onto the EFI unit. The TPS must be calibrated for both minium throttle position and maximum throttle position. This is easily accomplished using the included software.

 


The EFI kit includes a coolant temperature sensor. We installed this to the intake manifold's front left water port. The EFI unit's built-in ECU must read a minimum of 145 degrees F water temperature before any programming can take effect.

 


The Projection III fuel feed consists of an included -6 fuel log with incorporated fuel pressure regulator.

 


Todd at Platinum Engine Designs loaded the Projection III software to his computer and began to program the EFI, establishing desired air/fuel ratio and adjusting fuel trim. The programming software is quite detailed, and requires a bit of time to become familiarized. Professional Products definitely invested in quite a bit of time in developing this program.

 


The Projection III software allows you to monitor and adjust fuel trim across the rpm range.

 


The Projection III connections were relatively simple. Driving about 400 mioles or so will theoretically allow the unit to "self learn," while manual programming with their software requires time and patience.

In our brief experience with the system, the adaptive learning feature obviously requires more operating time than we had during our dyno run. We opted to load the software CD and attempted to tune the system (we ran a USB cable from the unit’s tuning cable connection to the dyno control room’s computer). After playing with the fuel trim and adjusting the air/fuel ratio for about an hour, we managed a 509 HP pull. I think that the potential is there, but a bit of time is required for tuning. The menus and graphics on the Projection III software is very high resolution and easy to read, but it appears that you will need to spend some time to achieve final tune. Again, Professional Products tells us that you don’t need to use the software to tune the system, due to the adaptive learning feature of the system, but it’s nice to know that the option is available. In a nutshell, in order to fully take advantage of the engine’s potential, we need a bigger carb (or more extensive tuning of the EFI) and a bigger cam. Carb size should be in the 850 to 900 cfm range, and the cam could definitely use more duration. Our cam featured duration (at 0.050”) of 232 intake and 242 exhaust (very smooth and easy compatibility with a lock-up torque converter). A better choice (again, to hit the magic 600 HP mark) might be Lunati’s P/N 51018 cam that features 240/252 duration @ 0.050”. Even better, a custom cam could easily be ordered to suit this engine. Bullet Racing Cams suggested a hydraulic roller with 0.612" intake and exhaust lift, with 245/253 degrees duration at 0.050" (lobe sep of 108 or 110), which should really wake this engine up. While I’d love to swap cams and tune fuel/air to hit 600 HP, quite honestly, my dyno-time budget ran out, and I simply couldn’t afford to perform additional dyno tuning. While we didn’t realize the engine’s maximum potential during the dyno runs, the 500+ HP range and 500+ lb-ft of torque is still nothing to sneeze at, especially for a street car. The extra 100 HP that can be had is probably overkill for the street (after all, how long do you want the tires to fry?), but as we all know, more is always better, either for performance or mere bragging rights. Current camshaft: Lunati hydraulic roller P/N 51012 Valve lift  544 int / 560 exh Duration @ 0.050  232 int / 242 exh Centerline 108 int / 116 exh Suggested upgrade camshaft (to allow us to hit the projected 600 HP range): Lunati hydraulic roller P/N 51018 Valve lift 560 int / 576 exh Duration @ 0.050  240 int / 252 exh Lobe separation 110 Suggested custom cam profile (re Bullet Racing Cams): Valve lift 612 intake and exhaust Duration @ 0.050"  245 intake / 253 exhaust Lobe separation 108 or 110 .

427W ENGINE DYNO DATA (with our 750 cfm carb)

 

EngSpd      STPPwr           STPTrq    Fuel1M     Fuel2M      BSFC     CoolOt        OilSmp      Oil P RPM              CHp                  Clb-ft          lbs/hr       lbs/hr         lb/hph     degF           degF           psig   4100             413.1                 529.2           128.3           59.7             0.495         154               210             56.6 4200             421.3                 526.9             129.2           60.9             0.491         156               210             56.7 4300             431.5                 527.0            129.7           62.2              0.484         156              211              56.8 4400             440.6                 525.9            130.9           63.4               0.480        157              211              56.8 4500             449.7                 524.8            132.1            66.0               0.480        158              211              56.9 4600             458.7                 523.7            134.4            69.7               0.485        158              212              57.1 4700             467.7                 522.6            137.9           73.8               0.493         159              212              57.4 4800             475.5                 520.3            138.3            78.1               0.496         160              212              57.7 4900             482.1                 516.7             137.4             78.0             0.487         160              212              58.0 5000             488.5                 513.1             137.2             77.8               0.480         161              212              58.3 5100             493.6                 508.3             139.6             78.1               0.481          161              213              58.6 5200             497.3                 502.3            139.1              78.2               0.477         162              213              58.7 5300             499.6                 495.1             138.9              79.1               0.476          162              213              58.8 5400             500.4                 486.7            138.9             80.6                0.479          163              213              58.8  5500             503.4                 480.7            140.0             80.1                0.478          163              214              58.9 5600             506.2                 474.8             140.0             80.1                0.474          164              214             59.0 5700             508.8                 468.8             140.5              81.1                0.477          165              214              59.0 5800             513.2                 462.9              142.1              82.9                0.482           165              214              59.1 5900            516.9                 455.7             143.0             84.4                0.487          166               214              59.2 6000             514.6                 446.0              144.5             85.5                0.495           167              214              59.2 Special thanks to Todd at Platinum Engine Designs for his dyno services.

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OUR PART NUMBERS

DART 351W IRON EAGLE BLOCK…………………31385135 SCAT CRANK 4.00 STROKE…………………………4-351C-4000-6200 SCAT RODS 6.200……………………………………..2-ICR6200-7/16 JE PISTONS AND RINGS  4.125 BORE……………...232474 CLEVITE MAIN BRGS ……………………………….MS-1010HX CLEVITE ROD BRGS …………………………………CB-663 HN VICTOR GASKET SET………………………………..FS3428A VICTOR MLS CYL HEAD GASKETS………………..MLS 54293 FEL PRO INTAKE GASKETS…………………………1262R (size needed for our Trick Flow heads) LUNATI ROLLER CAMSHAFT……………………….51012  RRN1-232-242 LUNATI ROLLER LIFTERS………………………..…72335LUN RACE PUMPS FUEL PUMP…………………………. 1700 (if carb is used) RACE PUMPS REGULATOR …………………………5011(if carb is used) PROFESSIONAL PRODUCTS ELECT. FUEL PUMP..           (for EFI) PROFESSIONAL PRODUCTS FUEL REGULATOR…           (for EFI) MOROSO OIL PAN…………………………………….18507 MOROSO VALVE COVERS…………………………..68450 MOROSO OIL PUMP PICKUP………………………...24507 ARP OIL PUMP SHAFT………………………….....154-7901 ARP FASTENERS                                              Head studs……………..….254-4703                                              Intake manifold…………...454-2103                                              Oil pan studs……………...454-1904                                              Balancer bolt……………...150-2501                                              Alternator bracket bolt……450-3301                                              Valve cover studs…………400-7614                                              Distributor stud…………....450-1701                                              Cam bolt……………..……155-1001 TOTALLY STAINLESS FASTENERS                                               Intake manifold……………6-0838                                               Fuel pump (mech)…………6-0596                                               Distributor bolt…………….6-0512                                               Balancer bolt kit…………...6-0725                                               Valve cover bolt kit………..6-0542                                               Oil pan bolt kit…………….6-0572 Note: Both ARP and Totally Stainless offer great fastener kits for this application. TRICK FLOW CYLINDER HEADS……………………TFS-5170T012-C01 MELLING OIL PUMP…………………………………..10833 MELLING TIMING SET……………………………..…40402 MEZIERE WATER PUMP………………………………WP311B MEZIERE WATER NECK…………………………..….WN0023B SILVER SEAL TIMING COVER……………………….TW6600 PRW 6.5” RACE DAMPER……………………………..2430203 PRW FLEXPLATE………………………………………1830213   (157 TOOTH) PROFESSIONAL PRODUCTS HURRICANE INTAKE….54032 PROFESSIONAL PRODUCTS POWERJECTION III EFI .70027 PERFORMANCE DISTRIBUTORS DIST………………35720 DURASPARK PERF DIST PLUG WIRES……………………………….C9059 LIVEWIRES (Blue, 135 deg. boots. Pre-made, designed for over-valve cover routing) (while I used trim-to-fit wires to achieve my wrap-around routing, the Livewires are an excellent option if you prefer over-the-valve-cover wire routing) PERF DIST MODULE/COIL KIT……………………….31721 FOR DURASPARK PERF DIST BILLET LOOMS…………………………....9100 MSD SPARK PLUG WIRES (Multi-angle HEI)…………31189 MSD PRO-CLAMP WIRE SEPARATORS………………8843 HARLAND SHARP ROLLER ROCKERS (OFFSET)…..S4202 LUNATI PUSHRODS 5/16X.083X7.700……………..….82135 PRO SERIES EDELBROCK BILLET BREATHER……………………4213 SUMMIT PCV……………………………………………SUM-440308 BOSCH SPARK PLUGS…………………………………7957 Super Plus ROYAL PURPLE MAX TUFF ASSEMBLY LUBE……….01335 ARP MOLY THREAD LUBRICANT………………………100-9905 ARP 4.125” PISTON RING COMPRESSOR……………….900-1250 VALCO ALUMINUM RTV…………………………………71195 JOE GIBBS BREAK-IN ENGINE OIL (W/ZDDP)…………BR PUROLATOR OIL FILTER…………………………………PL30001 MSD BILLET READY-TO-RUN DISTRIBITOR……..8354

 

 

OUR FASTENER TORQUE SPECIFICATIONS

 

MAIN CAP TORQUE SPECIFICATIONS

Dart specifies the following torque values for their main cap bolts… (Note: all torque values listed are based on the use of oil on threads and bolt head undersides) INBOARD ½”-DIA BOLTS………………………………….105 ft-lbs (w/oil) OUTBOARD 7/16” SPLAYED BOLTS AT CAPS 2-3-4…… 65 ft-lbs (w/oil) OUTBOARD 3/8” BOLTS AT CAPS 1 & 5…………………. 35 ft-lbs (w/oil) (Note: with all cap bolts in place, tighten the ½”-dia bolts first, followed by the 7/16” outboard splayed bolts, followed by the 3/8” outboard bolts) CONNECTING ROD BOLT TORQUE ARP 7/16” 8740 ROD BOLTS………………………………..63 ft-lbs (w/moly) (or tighten by monitoring bolt stretch…. 0.004 – 0.005” ….0.005” max) CAMSHAFT SPROCKET BOLT ARP 155-1001…………....45 ft-lbs CAMSHAFT RETAINER PLATE BOLTS……………………9-12 ft-lbs OIL PUMP TO BLOCK 3/8” BOLTS………………………….25 ft-lbs OIL PUMP PICKUP  5/16”X 18 BOLTS………………………18 ft-lbs OIL PAN NUTS………………………………………..………12-15 ft-lbs DAMPER BOLT ARP 150-2501………………………………80 ft-lbs (OE spec) CYLINDER HEAD STUDS ARP 254-4703 Studs to block……………………………………….finger-tight plus @ 8-10 ft-lb preload Nuts to studs (in 3 steps)..……………………………………...45, 75, 105 ft-lbs ROCKER ARM STUDS (7/16”) TO HEADS…………………45 ft-lbs (intake locations require thread sealer) FLEXPLATE……………………..……………………………..85 ft-lbs (OE spec) TIMING COVER TO BLOCK….………………………….…..18 – 20 ft-lbs WATER PUMP TO TIMING COVER.…………………….…..18 – 20 ft-lbs INTAKE MANIFOLD………………………….10 ft-lbs initial on all bolts, followed by 15 ft-lbs on all bolts. Finally, 25 ft-lbs on only the center eight bolts. These are the specs provided by Professional Products, for their Hurricane manifold. VALVE COVERS …………….………………………….……………………100 in-lbs (I used ¼”x20 ARP stainless bullet-nosed studs and 12-point nuts) THROTTLE BODY (OR CARB) TO MANIFOLD…………….80 in-lbs SPARK PLUGS (w/moly)……………………………………….15-18 ft-lbs

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PARTICIPATING MANUFACTURER DIRECTORY

Thanks to all of the following for their participation in this project. ARP 1863 Eastman Ave. Ventura, CA 93003 805-339-2200 www.arp-bolts.com BIRCHWOOD AUTOMOTIVE GROUP 10205 Wooster Pike Rd. Creston, OH 44217-2221 330-435-6347 www.birchwoodautomotive.com BOSCH MOTORSPORTS 2800 S. 25th Ave. Broadview, IL 60155 919-846-2115 www.boschusa.com CAM MOTION 2092 Dallas Dr. Baton Rouge, LA 70806 225-926-6110 www.cammotion.com DART MACHINERY 353 Oliver Dr. Troy, MI 48084 248-362-1188 www.dartheads.com FALL AUTOMOTIVE MACHINE 3519 Jackman Rd. Toledo, OH 43612 419-473-1557 FRAGOLA PERFORMANCE SYSTEMS 888 West Queen St. Southington, CT 06489 866-337-2739 www.fragolaperformancesystems.com GEARHEAD TOOLS (TM MACHINE PRODUCTS) 24773 Avenue Rockefeller Valencia, CA 91355 800-733-4463 www.GearHeadTools.com GOODSON TOOLS & SUPPLIES 156 Galewski Dr. Winona, MN 55987 800-533-8010 www.goodson.com GREBER POWDERCOATING 313 Clark St. Elyria, OH 44035-6105 440-322-3685 e-mail: gmt313@yahoo.com GRESSMAN POWERSPORTS 904 Lime St. Fremont, OH 43420 419-355-8980 www.gressmanpowersports.com HARLAND SHARP 19769 Progress Dr. Strongsville, OH 44149 440-238-3260 www.harlandsharp.com INNOVATORS WEST 1800 E. 4th Ave. Hutchinson, KS 67501 800-816-2393 www.innovators.bz JE PISTONS 15312 Connector Lane Huntington Beach, CA 92649 714-898-9763 www.jepistons.com LISTA INTERNATIONAL CORP. 106 Lowland St. Holliston, MA 01746 800-722-3020 www.listaintl.com LOCK-IN-TOOL 2511 Providence Rd. South Waxhaw, NC 28173 www.lockintool.com LUNATI 11126 Willow Ridge Dr. Olive Branch, MS 38654-4013 662-892-1500 www.lunaticamshafts.com MAC TOOLS 505 N. Cleveland Ave. Suite 200 Westerville, OH 43082 800-622-8665 www.mactools.com MAHLE CLEVITE 1350 Eisenhower Place Ann Arbor, MI 48108-3282 800-338-8786 www.mahleclevite.com MEDINA MOUNTAIN MOTORS 199 Factory St. Creston, OH 44217 866-218-7467 www.medinamountainmotors.com MELLING SELECT PERFORMANCE PO Box 1188 Jackson, MI 49204 517-787-8172 www.melling.com MEZIERE ENTERPRISES 220 South Hale Ave. Escondido, CA 92029-1719 800-208-1755 www.meziere.com MOROSO PERFORMANCE PRODUCTS 80 Carter Dr. Guilford, CT 06437 203-453-6571 www.moroso.com MSD IGNITION 1490 Henry Brennan Dr. El Paso, TX 79936-6805 915-857-5200 www.msdignition.com PERFORMANCE DISTRIBUTORS 2699 Barries Dr. Memphis, TN 38132 901-396-5782 www.performancedistributors.com PLATINUM ENGINE DESIGNS 8485 Bethel Rd. Norwich, OH 43767 740-796-6215 PROFESSIONAL PRODUCTS 12705 S. Van Ness Ave. Hawthorne, CA 90250 323-779-2020 www.professional-products.com PRW INDUSTRIES 193 West Orangethorpe Ave. Placentia, CA 92870 714-792-1000 www.prw-usa.com PUROLATOR AUTO FILTERS 3200 Natal St. Fayettville, NC 28306 800-526-4250 www.purolatorautofilters.net RACE PUMPS 222 Hillcrest Dr. High Point, NC 27262 336-476-9720 www.racepumps.com ROYAL PURPLE, LTD 1 Royal Purple Lane Porter, TX 77365 888-382-6300 www.royalpurple.com SCAT ENTERPRISES 1400 Kingsdale Ave. Redondo Beach, CA 90278-3983 310-370-5501 www.scatcrankshafts.com SILVER SEAL PRODUCTS CO. PO Box 1050 Trenton, MI 48183-1050 734-479-2255 www.silver-seal.com SUMMIT RACING PO Box 909 Akron, OH 44398-6177 800-230-3030 www.summitracing.com TOTALLY STAINLESS PO Box 3249 Gettysburg, PA 17325 800-767-4781 www.totallystainless.com TRICK FLOW SPECIALTIES 1248 Southeast Ave. Tallmadge, OH 44278 330-630-1555 www.trickflow.com VALCO CINCINNATI 411 Circle Freeway Dr. Cincinnati, OH 45246 800-788-3865 www.valco-cp.com .

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