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415ci Stroker 500 HP Chevy Small Block
What is it, how was it built and what to expect.
415 Stroker Small Block Chevy
Produced by Speed-O-Motive in West Covina, Southern California, the 415 stroker kit is is a tremendous bang for the buck. It is one of their most potent power combinations without the heavy big block weight. You can easily achieve over 450 Lbs./Torque below 3,500 rpm on pump gas. A great street/strip combination.
| Short Block Specs: |
| Block: | 70 Chevy 400ci | | Type: | Cast Iron |
| Cylinders: | 8 | | Displacement: | 415.7 |
| Bore: | 4.155" | | Deck Height: | 9.025 |
| Stroke: | 3.82" | | Bore/Stroke Ratio: | 1.084 |
| Rod Length: | 5.7" | | Rod/Stroke Ratio: | 1.487 |
| Pistons: | Keith Black | | Piston Type: | Hyperuetectic |
| Piston Rings: | 3 standard tension | | Piston Top: | Ceramic Coating |
| Timing Setup: | True Double Roller | | Timing Options: | Crane Needle Thrust and Roller Cam Button |
| Dampner: | Fluidampr Streetdamper | | Balancing: | External |
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| Head Specs: |
| Head: | AFR 190cc Street | | Type: | Aluminum |
| Valve Dia. In.: | 2.02" | | Valve Dia. Ex.: | 1.6" |
| Avg. Port Dia. In.: | 1.78" | | Avg. Port Dia. Ex.: | 1.22" |
| Port Length In.: | 5" | | Port Length Ex.: | 3" |
| Port Flow Coef. In.: | .45 | | Port Flow Coef. Ex.: | .50 |
| Comp. Ratio: | 10:1 | | Burn Rating: | 10% Faster |
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| Cam Specs: |
| Cam: | Comp Cams 282/288 #CS XR282HR-10 | | Type: | Hydraulic Roller |
| Centerline In. ATDC: | 110 deg. | | Centerline Ex. ATDC: | 110 deg. |
| Dur. @ .050 In: | 230 | | Dur. @ .050 Ex: | 236 |
| Open @ .050 In. BTDC: | 5 | | Open @ .050 Ex. BTDC: | 48 |
| Close @ .050 In. ABDC: | 45 | | Close @ .050 Ex. ABDC: | 8 |
| Max. Lobe Lift In.: | .34 | | Max. Lobe Lift Ex.: | .3467 |
| Rockers: | Crane | | Rocker Type: | Aluminum Roller |
| Rocker Ratio In.: | 1.6 | | Rocker Ratio Ex. | 1.6 |
| Gross Valve Lift In.: | .544 | | Gross Valve Lift Ex.: | .555 |
| Total Cam Advance: | 0 deg | | Lobe Sepparation: | 110 |
| Lifters: | Factory 3.8L Roller | | Pushrods: | 7.25" |
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| Intake Specs: |
| Intake: | Edelbrock Performer RPM Air-Gap #7501 | | Type: | Aluminum |
| Intake Heat: | Low | | Plenum: | Dual Plane - dropped plenum |
| Runner Dia.: | 1.68" | | Runner Style: | Straight- No Taper |
| Runner Length: | 7" | | Runner Flow Coef.: | 3 |
|
| Carb Specs: |
| Carb: | Holley 4150 #4779 | | Type: | Double Pumper |
| CFM: | 750 | | Air Cleaner CFM: | 800 |
| Power Valve: | 6.5 | | Idle: | 1000 rpm |
| Pri. Jets: | 72 | | Sec. Jets: | 80 |
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| Exhaust Specs: |
| Exhaust: | Hooker Competition Headers | | Type: | Full Length |
| Muffler: | Flowmaster | | Design: | 50 Series |
| Inside Dia.: | 1.5" | | Length: | 40" |
| Runner Flow Coef.: | 1 | | CFM | 800 |
| Collector Length: | 8 | | Collector Style: | Simple |
| Collector Size: | 3" | | Exhaust Size | 2.5" |
| |
| Drivetrain Specs: |
| Transmission: | TH-350 | | Type: | Auto |
| Torque Converter: | Corvette | | Stall: | 2800rpm |
| Trans Ratio: | 1st=2.52, 2nd=1.52, 3rd=1 | | Mods: | Shift Kit |
| Driveline: | Stock | | Rear End: | 10 bolt |
| Gear Ratio: | 2.73 | | Diff.: | Open |
| Front Brakes: | Disk | | Rear Brakes: | Drum |
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| Tire Specs: |
| Front Rim Size: | 15"x8" | | Rear Rim Size | 15"x8" |
| Front Rim Offset: | 3.75" | | Rear Rim Offset: | 3.75" |
| Front Tire Size: | | | Rear Tire Size: | |
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| Additional Specs: |
| Cooling Fan: | Electric | | Water Pump & Drive: | Production Style |
| Ignition: | Proform Hi-Amp | | Ign. Type: | HEI |
| Peak RPM: | 6000 - high piston speed | | Maximim Flow | 720.48 CFM @ 100% VE |
| Vehicle Weight: | 3800 lbs | | Aero Dynamic Drag | |
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First Pass Of the Spec's loaded into Performance Trends Engine Analyzer exposed the following.
Test's suggest a peak of 505 hp at 5500 rpm and 557 ft-lbs torque at 4000 rpm. As per the target of this build, the engine should make close to 500 ft-lbs of torque at its stall speed of 2800 rpm as well as its peak rpm of 5500 for a relatively flat torque curve. It's peak horsepower of 505 hp is at its peak desired rpm of 5500.
Engine_RPM 1500 2000 2500 3000 3500 4000 4500 5000 5500 6000 6500 7000
Brk_Tq 382 388 415 533 542 557 547 529 482 421 350 263
Brake_HP 109 148 198 305 361 424 468 503 505 481 433 351
Exh_Pres 0.0 0.0 0.0 0.1 0.1 0.2 0.2 0.3 0.3 0.3 0.3 0.3
Int_Vac 0.1 0.1 0.2 0.5 0.7 1.0 1.3 1.6 1.7 1.7 1.7 1.6
Vol_Eff 70.0 69.9 74.9 94.8 96.4 99.8 100.0 99.6 94.5 87.8 79.8 72.1
Actual_CFM 126 168 225 342 406 480 541 599 625 634 624 607
Fuel_Flow 46.25 61.6 82.5 125 149 176 198 219 229 232 228 222
Nitrous 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
Ntrs_Fuel 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00 0.00
BMEP 138 141 151 193 197 202 198 192 175 153 127 95.5
A/F_Mxtr_Qlty 90.9 97.5 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
BSFC 0.424 0.417 0.417 0.411 0.412 0.415 0.423 0.436 0.453 0.482 0.528 0.634
Thermal_Eff 34.91 35.91 36.10 36.09 36.36 36.36 36.07 35.54 35.03 34.09 32.84 29.95
IMEP 153 157 169 214 219 227 226 221 207 187 164 135
Frctn_Tq 39.74 45.26 50.9 56.7 62.7 68.8 75.1 81.6 88.2 95.1 102 109
Frctn_HP 11.35 17.23 24.24 32.41 41.79 52.4 64.4 77.7 92.4 109 126 146
FMEP 14.42 16.42 18.47 20.58 22.75 24.97 27.26 29.60 32.01 34.49 37.03 39.64
Mech_Eff 90.6 89.5 89.1 90.4 89.6 89.0 87.9 86.6 84.5 81.6 77.4 70.7
Motoring_HP 12.90 21.22 31.71 41.99 51.4 64.1 81.2 104 129 159 193 214
Pumpng_Work -1.55 -3.99 -7.47 -9.58 -9.58 -11.68 -16.83 -26.22 -36.16 -50.8 -66.8 -68.1
Residual_Exh 10.1 10.7 9.0 2.2 2.9 4.7 4.6 2.7 2.6 2.4 2.9 4.0
Shrt_Circuit 0.0 0.0 0.1 1.0 0.4 0.0 0.0 0.2 0.1 0.4 0.3 0.1
Exh_Temp 1322 1374 1423 1486 1471 1455 1479 1492 1493 1510 1530 1412
Mx_Cyl_Pres 836 845 906 1118 1135 1189 1191 1173 1105 1018 915 784
Mx_Cyl_Tmp 4437 4471 4566 4811 4775 4734 4731 4790 4751 4758 4680 4334
In_Port_Tmp 104 97 95 82 81 75 73 68 68 66 68 67
Piston_Spd 958 1277 1597 1916 2235 2555 2874 3193 3513 3832 4151 4471
Piston_Gs_@_TD 160 290 450 650 890 1160 1470 1820 2200 2620 3070 3560
Coolant_HP 38.02 48.59 60.6 71.4 82.4 94.9 108 120 133 148 160 159
Blow_By 4.2 4.3 4.5 5.4 5.6 5.9 5.9 5.8 5.5 5.1 4.6 4.1
In_Tun_Pres 0.0 -0.1 0.2 1.1 1.5 3.1 4.3 4.7 4.7 4.9 4.8 4.3
Avg_In_Vel 95 127 159 191 223 254 286 318 350 382 413 445
Avg_Ex_Vel 128 170 213 255 298 340 383 425 468 510 553 596
Mach_# 0.121 0.161 0.201 0.241 0.281 0.322 0.362 0.402 0.442 0.482 0.523 0.563
Act_In_FlowAre 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
Act_Ex_FlowAre 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0 100.0
Valve_Toss PmpUp PmpUp
Knock_Index 1.6 1.4 1.4 1.8 1.8 1.8 1.7 1.5 1.2 1.0 0.7 0.5
Spark_Advnc 23.8 26.2 27.0 25.3 26.6 27.8 28.6 28.9 30.0 31.2 32.7 34.5
Primary_Jet .1177 .1055 .1119 .1158 .1151 .1146 .1139 .1142 .1143 .1142 .1142 .1144
Secondary_Jet .0860 .0777 .0820 .0847 .0842 .0839 .0834 .0836 .0837 .0836 .0836 .0837
Copyright © by M.Dowdell All Right Reserved. Published on: 2004-09-02 (278 reads) [ Go Back ] |
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