PONTIAC 501 DYNO RUN

 

By Mike Mavrigian

 

 

We finally had a chance to run the Pontiac 501 on dyno. Following are the results. We ran the engine at Ross Racing Engine’s new Superflow SF-902 engine dynamometer in late May, 2012 (Ross is located in Niles, OH, about 62 miles east of my facility).

After setting the engine up on the dyno stand, we installed a set of Hooker Super Comp headers, featuring 1/75” primary tubes and 3” collectors. The sump (and oil filter) was filled with Brad Penn 30W specialty Break-In oil, which contains a high level of ZDDP. Even though this engine features a roller camshaft, break-in oil is nonetheless a good idea in order to aid ring seating and to provide added protection for rocker arms and valve stem tips with higher spring pressures. Again, although high-zinc-content break-in oil is primarily targeted at break-in for flat tappet cams, but the high pressure lubrication provided by this specialized oil is a good idea for any fresh engine, regardless of the cam/lifter style.

 

The engine is mounted to the SuperFlow dyno cart, and the drive plate assembly is installed to the PRW flexplate. We installed a “stock” Pontiac starter (which required 3 starter shims for proper tooth alignment).

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Once oil was added (through the distributor hole, in order to introduce oil directly to the oil pump), the oil pump drive was run with an electric drill until 63 psi oil pressure was recorded. This insured against a dry-start. Immediately after pre-oiling, both valve covers were removed to inspect the rockers and to verify that each rocker was receiving proper oil delivery.

The engine was initially fired using one of Ross’s “house” carburetors (a 4150 type Holley 850 cfm double pumper). Ross’s Tony Lombardi prefers to initially fire all dyno engines using a carb that has a proven track record, to avoid any potential mixture/backfire problems (primarily to avoid issues with damaging his pricey air sensor). Once the engine ran for about 20 minutes (at around 1800 rpm), the engine was shut down and inspected again (valve lash, inspecting for leaks, etc.). The engine was then run with Holley’s “black” Ultra HB 850 cfm carb (the new all-aluminum monster), which, by the way, provided our best horsepower runs.

 

Connected and ready for its first firing on Ross’s new SuperFlow dyno cell.

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During carb swaps, fuel was spilled onto the intake manifold (difficult to avoid that). The clearcoat on our carbon fiber film treated manifold held up to both heat and fuel, with no lifting or staining whatsoever. Nice to know. The only issue I saw was a slight deformation of the clearcoat around the perimeter of a few intake manifold bolt washers (simply due to pressure exerted by the washers on the thick clearcoat). In the future (when I have another manifold treated in this manner), I’ll spot-face all bolt holes to fit the intended washers, and tell the graphics house to avoid applying clearcoat to the spot-faced washer recesses, which will eliminate this minor concern. But in terms of heat and fuel exposure, the urethane clearcoat held up extremely well. I’m really pleased with the appearance and durability of the graphics treatment and will definitely consider this in future builds.

 

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Before initial firing, the engine was pre-oiled. Valve covers were then removed to verify that each rocker was receiving oil.

 

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Tony checks our timing. Timing checks were performed during each run.

 

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Initial runs were made with Ross’s “house” carb before swapping out to our Holley 850cfm black Ultra HB carb.

 

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Our timing as set at 36 degrees.

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Ross Lombardi (at the control panel) and Tony monitoring an initial run.

 

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Our max power was recorded at 525.4 HP at 4900 rpm, and max torque was 604.8 lb-ft at 4100 rpm.

 

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 SCFM at max HP was 622.

 

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Oil pressure was consistent throughout the runs.

 

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Horsepower (red curve) and torque (blue curve).

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The only minor glitch we ran into involved a disappointing failure of our Spectre engine oil dipstick that I had purchased from Summit Racing. During one oil level check, the “billet” aluminum handle simply popped off of the stick (poor press-fit connection of the stick to the handle). Luckily, about ¾” of stick protruded above the dipstick tube, so extraction wasn’t a problem. After tossing the aftermarket dipstick into the closest trashcan, we temporarily sealed the dipstick tube with a rubber cap and proceeded. Considering that this was our only gremlin, the session went great.

 

OUR BEST PULLS

Budget-wise, I didn’t have the luxury of spending additional time on Ross’s dyno for fine tuning or experimentation with different intake manifolds, timing setups, carb adjustments or cams. In the short time we spent that day, our peak horsepower was recorded at 525.4 HP at 4900 rpm, and peak torque was a whopping 604.8 lb-ft at 4100 rpm, with timing set at 36 degrees.  Obviously, the valvetrain and bottom end is certainly capable of handling much higher rpm. We strongly felt that with more cam duration and experimenting with larger-volume intake manifold runners, the rpm band would move upwards, and obtaining very close to 600 HP would be realistic. However, for the first time out of the gate, we felt that this session was very successful. She’s definitely a stump puller.

 

 

 

MY PARTS LIST

 

BLOCK………………………..Original Pontiac 455 (core)

CRANKSHAFT……………….Ohio Crankshaft P/N 44554500P

4340 forged, with 4.500” stroke,

                                                    455 mains and BBC rod pins                                                     

CONN. RODS………………….Scat forged 6.700” BBC P/N 2-454-6700-2200

STEEL CENTER MAIN CAPS..Pro-gram Engineering P/N P455C

MAIN STUDS…………………ARP P/N 194-5601

HEAD STUDS…………………ARP P/N 190-4305

CYL. HEADS………………….Kaufman Racing aluminum D-port, 81cc CNC

CAMSHAFT/LIFTERS………..Comp Cams hyd. roller P/N CL51-433-9

ROCKERS……………………..Harland Sharp alum. rollers, P/N S6001 (1.5:1)

PISTONS……………………….JE forged aluminum (custom order)

TIMING GEARS……………….Melling Performance P/N 40408

OIL PUMP………………………Melling Performance P/N 10540

TIMING COVER……………….EQ (EngineQuest) P/N TC400N

INTAKE VALVES………………Del West titanium (custom order: 2.10” x 5.100”)

EXHAUST VALVES……………Ferrea stainless steel P/N F5144 (1.77” x 5.100”)

VALVE SPRINGS………………Comp Cams P/N 995-16 (330 lb, triple)

RETAINERS…………………….Comp Cams 740-16 (10-deg, steel)

VALVE LOCKS EXH…………..Comp Cams 613-16 (10-deg Superlocks)

VALVE LOCKS INT……………Manley 13161-8 (10-deg Beadlock)

VALVE SEALS…………………Comp Cams, Teflon

VALVE SPRING LOCATORS…Comp Cams 4771-16

BALANCER…………………….Fluidampr P/N 650401 (6-5/8”)

FLEXPLATE……………………PRW P/N 1845503

INTAKE MANIFOLD…………..Professional Products Hurricane P/N 56031

CARBURETOR…………………Holley P/N 0-82851 (850 cfm)

CARB. FEED……………………Earls –8, P/N AT101286ER (7/8” thread)

CARBURETOR…………………Holley P/N 0-80804HB (Ultra aluminum)

CARB. FEED (for Ultra)………..Holley P/N 34-44 (-8 to ¾” thread)

DISTRIBUTOR…………………MSD Pro Billet P/N 8563

SPARK PLUG WIRES………….MSD P/N 31179

SPARK PLUGS…………………NGK R5671A-7

WIRE SEPARATORS…………..Billet Specialties 69604 (4-wire)

WIRE SEPARATORS…………..Billet Specialties 69602 (2-wire)

LIFTER VALLEY COVER……..Kaufman Racing (aluminum)

GASKET SET            ……………………Mahle Victor FS3494J

CYL. HEAD GASKETS…………Cometic C5712-045 (4.300” bore/0.045” thick)

MAIN BEARINGS………………Mahle Clevite P/N MS667P

ROD BEARINGS……………….Mahle Clevite P/N CB743HN

CAM BEARINGS……………….Mahle Clevite P/N SH2925

VALVE COVERS……………….PRW welded aluminum, satin

WATER PUMP………………….Tuff Stuff 1475NA (chrome) or PRW 1445510

ALTERNATOR…………………Tuff Stuff, P/N 7139ABULL (100A, chrome)

OIL PAN STUDS……………….ARP 400-1902

INTAKE MANIFOLD BOLTS…ARP 494-2101

ROCKER STUDS……………….ARP 100-7101

CARB STUDS…………………..ARP400-2403

TIMING COVER BOLTS……….ARP 490-1501

FUEL PUMP BOLTS……………ARP 490-1601

THERMOSTAT BOLTS………..ARP 490-7401

DISTRIBUTOR STUD……….…ARP 490-1701

CAMSHAFT BOLT……………..ARP 190-1001

VALVE COVER STUDS………..ARP 400-7504

FLEXPLATE BOLTS…………….ARP 200-2904

CRANK BALANCER BOLT……ARP 190-2501

HEAD TO BLOCK DOWELS……Pioneer S-1110

CAMSHAFT NOSE SPACER WASHER….Kaufman Racing

(takes the place of the OE eccentric fuel pump re thickness)

ENGINE LIFT HOOKS……………Kaufman Racing

DIST. HOLD-DOWN CLAMP……Kaufman Racing

POLY DISTRIBUTOR GEAR…….BOP P/N PDG37/38 (.500” for MSD)

OIL PAN (steel OE type)..…………Kaufman Racing

DIPSTICK………………………….Spectre P/N 5748 (billet handle)

UPPER DIPSTICK STUBE………..Kaufman Racing

LOWER DIPSTICK TUBE………..Kaufman Racing

OIL FILTER HOUSING…………..Kaufman Racing

FUEL PUMP BLOCK PLATE…….Kaufman Racing

THERMOSTAT HOUSING……….Spectre P/N 4737

OIL PAN PLATES…………………Kaufman Racing

OIL PUMP DRIVE ROD ………….Melling

VITON REAR MAIN SEAL………B.O.P

ASSEMBLY CHEMICALS……….Valco, ARP, Royal Purple

PUSHRODS (5/16”)………………..Trend 9.000” int/8.950” exh (0.080” wall)

CRANK PULLEY………………….CVF Racing, P/N PONT2CR

WATER PUMP PULLEY………… CVF Racing, P/N PONT2WP

ALTERNATOR BRACKET……….Tin Indian TIP-029

V-BELT (3/8”W x 46.1”)…………..Goodyear Gatorback 15461

BREATHERS………………………Billet Specialties

CRANK PULLEY BOLTS…………ARP 613-1250

WATER PUMP PULLEY BOLTS…ARP 712-0750

AIR CLEANER……………………..Holley P/N 120-145

ENGINE PAINT……………………Pontiac Light Metallic Blue in

Dupont  Chroma basecoat/clearcoat…custom match

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OUR PROJECT’S SUPPLIER DIRECTORY

 

ARP, INC.

1863 Eastman Ave.

Ventura, CA 93003

800-826-3045

www.arp-bolts.com

 

 

Birchwood Automotive Group

10205 Wooster Pike Rd.

Creston, OH 44217

330-435-6347

www.birchwoodautomotive.com

 

 

B.O.P. Engineering

N3651 Schmidt Rd.

Jefferson, WI 53549

920-674-6058

www.bopengineering.com

 

Brad Penn Lubricants

77 N. Kendall Ave.

Bradford, PA 16701

814-368-1340

www.bradpennracing.com

 

 

Comp Cams

3406 Democrat Rd.

Memphis, TN 38118

800-999-0853

www.compcams.com

 

 

CVF Racing

www.cvfracing.com

 

 

 

Del West Engineering

28128 W. Livingston Ave.

Valencia, CA 91355

800-990-2779

www.delwestusa.com

 

 

DipNDesign

Wooster, OH

330-988-2632

www.DipNDesign.com

 

 

Earl’s Performance Plumbing

Holley Performance Products

P.O. Box 10360

Bowling Green, KY 42102

270-782-2900

www.holley.com

 

 

EQ (Enginequest)

2580 N. Commerce St.

North Las Vegas, NV 89030-3876

800-426-8771

www.enginequest.com

 

 

 

Ferrea Racing Components

2600 NW 55th Ct., Suite 234

Ft. Lauderdale, FL 33309

888-733-2505

www.ferrea.com

 

 

Fluidampr-Horschel Motorsports

180 Zoar Valley Rd.

Springville, NY 14141

716-592-1000

www.fluidampr.com

 

 

GoJo Industries

One GoJo Plaza, Suite 500

Akron, OH 44311

800-321-9647

www.gojo.com

 

 

 

Goodson Tools & Supplies

156 Galewski Dr.

Winona, MN 55987

800-533-8010

www.goodson.com

 

 

Greber Powdercoating

313 Clark St.

Elyria, OH 44035

440-323-8588

www.grebermachine.com

 

 

 

Harland Sharp

19769 Progress Dr.

Strongsville, OH 44149

440-238-3260

www.harlandsharp.com

 

 

 

Holley Performance Products

P.O. Box 10360

Bowling Green, KY 42102

270-782-2900

www.holley.com

 

 

JE Pistons Inc.

15312 Connector Lane

Huntington Beach, CA 92649

714-898-9763

www.jepistons.com

 

 

 

Kaufman Racing Equipment

22280 Temple Rd.

Glenmont, OH 44628

740-599-5000

www.krepower.com

 

 

 

Lista International

106 Lowland St.

Holliston, MA 01746

800-722-3020

www.listaintl.com

 

 

Luke Engineering & Mfg. Co.

456 South Blvd.

Wadsworth, OH 44281

330-335-1501; 800-624-6943

www.lukeeng.com

 

 

Mahle Clevite

1350 Eisenhower Place

Ann Arbor, MI 48108-3282

734-975-4777

www.engineparts.com

 

 

Mac Tools

505 N. Cleveland Ave.

Westerville, OH 43082

800-622-8665

www.mactools.com

 

 

 

Medina Mountain Motors

199 Factory St.

Creston, OH 44217

330-435-6236

www.medinamountainmotors.com

 

 

 

Melling Select Performance

P.O. Box 1188

Jackson, MI 49204

517-787-8172

www.melling.com

 

 

MSD Ignition

1490 Henry Brennan Dr.

El Paso, TX 79936-6805

915-857-5200

www.msdignition.com

 

 

Ohio Crankshaft

5453 South State Route 49

Greenville, OH 45331

800-333-7113

www.ohiocrank.com

 

 

 

Professional Products

12705 S. Van Ness Ave.

Hawthorne, CA 90250

800-478-5441

www.professional-products.com

 

 

Pro-Gram Engineering Corp.

P.O. Box 472

Barberton, OH 44203

330-745-1004

www.pro-gram.com

 

 

 

PRW (Performance Racing Warehouse)

193 West Orangethorpe Ave.

Placentia, CA 92870

714-792-1000

www.performanceracingwarehouse.com

 

 

Ross Racing Engines

1763 N. Main St.

Niles, OH 44446-1277

330-544-4466

www.rossracingengines.com

 

 

Royal Purple Ltd.

One Royal Purple Lane

Porter, TX 77365

888-382-6300

www.royalpurple.com

 

 

Saeco Enterprises

495 E. Bergey St.

Wadsworth, OH 44281

330-334-3271

 

 

Scat Enterprises

1400 Kingsdale Ave.

Redondo Beach, CA 90278-3983

310-370-5501

www.scatcrankshafts.com

 

 

Snap-On Tools

2801 80th St.

Kenosha, WI 53143-5699

262-656-5200

www.snapon.com

 

 

Summit Racing

P.O. Box 909

Akron, OH 44398-6177

800-230-3030

www.summitracing.com

 

 

 

Tin Indian Performance

P.O. Box 1162

Uniontown, OH 44685

330-699-1358

www.tinindianperformance.com

 

 

 

Trend Performance

23444 Schoenherr

Warren, MI 48089

586-447-0400

www.trendperform.com

 

 

 

Trick Flow Specialties

285 West Ave.

Tallmadge, OH 44278

888-841-6556

www.trickflow.com

 

 

Tuff Stuff Performance Accessories

9004 Madison Ave.

Cleveland, OH 44102-2715

800-331-6562

www.tuffstuffperformance.com

 

 

Valco Cincinnati CP, Inc.

411 Circle Freeway Dr.

Cincinnati, OH 45246-1284

800-788-3865

www.valco-cp.com

 

 

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  • Jeff

    I appreciate the effort but not the results. Why didn’t you start with or obtain some info from guys who do nothing but Pontiacs like SD performance or Butler. This would have yielded better results from the same effort.