PONTIAC4 Cylinder |
PARTS INDEXPARTS COMBINATION GUIDE uses 8 typical performance levels from mild to wild. Choose your performance level based on your driving habits, normal rpm range, or the horsepower that you require. If you aren't sure which range to use, be conservative. If you choose too high an rpm range it will rarely be used and you will be disappointed but an rpm range that is lower than you need will still be used. Each performance level suggests the range of camshaft, carb size, compression ratio, header size, ignition, and gear ratios that will work together the best for that performance level. Continue to the parts lists to find the parts that fit your level.CAM AND VALVE TRAIN includes cam and lifter kits, pushrod sets, rocker arm sets, timing sets, valve spring sets, valves, and everything for assembling your heads. ENGINE BOTTOM END includes engine overhaul kits, oil pumps, piston sets, ring sets, and misc. parts for assembling your short block. GASKET SETS includes full gasket sets, header gaskets, intake manifold gaskets, timing cover gasket sets, and more. |
PARTS COMBINATION GUIDEParts that do not match stock specs are intended only for vehicles that do not require pollution controls.
TORQUE AND CITY CAR (idle to 3600 rpm, max. HP @ 4600 rpm)
Good fuel economy and improved low-end for city use. Recalibrate your
stock fuel system. No other modifications are required.
ENGINE CAM RANGE*
151 up to 19600
*The cam range refers to the 2nd half of
the Accelerated Motion part number.
Compression: Gasoline 9.0:1 or less, Propane 10.5:1 or less
Exhaust: Stock
Gear Ratio: 3.7:1 and lower (numerically)
Idle: 800 rpm or less
Ignition: Recurved distributor and electronic ignition
RV AND COMMUTER (1000 rpm to 4000 rpm, max. HP @ 5000 rpm)
Good fuel economy and improved mid-range performance for every day use.
No internal engine modifications are required.
ENGINE CAM RANGE* AIR/FUEL RANGE HORSEPOWER
151 19600 to 20400 222 to 278 cfm Max. 121 HP
*The cam range refers to the 2nd half of
the Accelerated Motion part number.
Compression: Gasoline 9.5:1 or less, Propane 11.0:1 or less
Exhaust: Stock or small tube headers
Gear Ratio: 3.9:1 or lower (numerically)
Idle: 850 rpm or less
Ignition: Recurved distributor and electronic ignition
MILD STREET PERFORMANCE (1400 rpm to 4400 rpm, max. HP @ 5400 rpm)
Fair idle, moderate fuel economy, improved mid-range performance.
ENGINE CAM RANGE* AIR/FUEL RANGE HORSEPOWER
151 20400 to 21200 250 to 309 cfm Max. 136 HP
*The cam range refers to the 2nd half of
the Accelerated Motion part number.
Compression: Gasoline 8.5:1 to 10.0:1, Propane 10.0:1 to 11.5:1
Exhaust: Stock perf. exhaust or small tube headers
Gear Ratio: 3.1:1 to 4.1:1
Idle: 900 rpm or less, slight lope
Ignition: Recurved distributor and electronic ignition
STREET PERFORMANCE (1800 rpm to 4800 rpm, max. HP @ 5800 rpm)
Good upper mid-range performance for street machines.
ENGINE CAM RANGE* AIR/FUEL RANGE HORSEPOWER
151 21200 to 22000 278 to 341 cfm Max. 151 HP
*The cam range refers to the 2nd half of
the Accelerated Motion part number.
Compression: Gasoline 9.0:1 to 10.5:1, Propane 10.5:1 to 12.0:1
Exhaust: Headers are recommended
Gear Ratio: 3.3:1 to 4.3:1
Idle: 950 rpm or less, small lope
Ignition: Recurved or perf. distributor, electronic ignition
HOT STREET PERFORMANCE (2200 rpm to 5200 rpm, max. HP @ 6200 rpm)
Strong upper rpm performance for street machines. Multi-angle valve
grind is recommended.
ENGINE CAM RANGE* AIR/FUEL RANGE HORSEPOWER
151 22000 to 22800 308 to 373 cfm Max. 166 HP
*The cam range refers to the 2nd half of
the Accelerated Motion part number.
Compression: Gasoline 9.5:1 to 11.0:1, Propane 11.0:1 to 12.5:1
Exhaust: Performance exhaust with headers
Gear Ratio: 3.5:1 to 4.5:1
Idle: 1000 rpm or less, has a lope
Ignition: Recurved or perf. distributor, electronic ignition
STREET/STRIP (2600 rpm to 5600 rpm, max. HP @ 6600 rpm)
Strong performance above 2500 rpm. Expect low manifold vacuum.
Mild port work and multi-angle valve grind are recommended.
Automatic transmissions may require a high stall torque converter.
ENGINE CAM RANGE* AIR/FUEL RANGE HORSEPOWER
151 22800 to 23600 338 to 405 cfm Max. 181 HP
*The cam range refers to the 2nd half of
the Accelerated Motion part number.
Compression: Gasoline 10.0:1 to 11.5:1, Propane 11.5:1 to 13.0:1
Exhaust: Performance exhaust with headers
Gear Ratio: 3.7:1 to 4.7:1
Idle: 1100 or less, has a lope
Ignition: Performance distributor and electronic ignition
PRO STREET AND RACE (3000 rpm and up)
Super top-end performance. Manifold vacuum might be too low for
power brakes and automatic transmission modulators. Mild port work
and multi-angle valve grind are recommended. NOT for daily driving.
Automatic transmissions will require a high stall torque converter.
ENGINE CAM RANGE* AIR/FUEL RANGE HORSEPOWER
151 23600 and up 369 cfm and up 181 HP and up
*The cam range refers to the 2nd half of
the Accelerated Motion part number.
Compression: Gasoline 10.5:1 and up, Propane 12.0:1 and up
Exhaust: Performance exhaust with headers
Gear Ratio: 3.9:1 and higher (numerically)
Idle: 1100 rpm or more, will be rough
Ignition: Performance distributor and electronic ignition
WHICH CAM DURATION IN THE RANGE WILL WORK BEST ?
Cars (large): Use short or medium duration, exhaust can be longer.
Cars (small): Use long intake duration, exhaust can be longer.
Propane: Use short or medium duration, exhaust can be shorter.
Trucks: Use short duration for intake and exhaust.
Turbos: Use short or medium duration, exhaust can be shorter,
compression must be lower than shown.
HOW MUCH LIFT IS ENOUGH ?
151 gets the best flow past the valves at only .440" lift.
Lifts higher than these figures will add more duration at the maximum
flow point. Excessive lifts will cause more problems than they are
worth in an engine that is not fully race prepared.
MINIMUM ENGINE HORSEPOWER REQUIRED TO REACH A 1/4 MILE SPEED:
HPq = (0.00426 x MPH) x (0.00426 x MPH) x (0.00426 x MPH) x WEIGHT
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ENG. DESCRIPTION PART NUMBER
HYDRAULIC CAM AND LIFTER KIT 1977-79 except cross flow head
All kits include computer cam checking.
050 DUR LIFT ADV DUR LOBE
INT/EXH INT/EXH INT/EXH SEP.
Stock 1977-79 76431-18940
190/190 .404/.404 276/276 111 76431-18940
204/204 .443/.443 281/281 109 76431-20544
205/213 .476/.470 267/277 111 76431-20614
HYDRAULIC CAM AND LIFTER KIT 1979-84 with cross flow head
All kits include computer cam checking.
050 DUR LIFT ADV DUR LOBE
INT/EXH INT/EXH INT/EXH SEP.
Stock 1979-84 76441-18841
190/190 .406/.406 276/276 112 76441-18841
190/202 .452/.478 261/273 111 76441-19345
204/214 .490/.516 270/280 112 76441-20582
205/213 .476/.470 267/277 111 76441-20614
214/224 .516/.543 280/290 112 76441-21585
217/226 .515/.518 277/292 111 76441-21952
HYDRAULIC ROLLER CAM AND LIFTER KIT 1984-89
Two types of hydraulic roller cam engines were produced and the
cams are not interchangeable. Check the 8th position of your
vehicle identification number or measure the cam snout to be sure
of which engine you have.
VIN 2, E, or R. Snout is 1.0 long.
Buick Century.
All Chevrolet, including Camaro and S10/S15 Trucks.
Oldsmobile Cutlass.
Pontiac 6000, Fiero, and Firebird.
Stock 1984-89 gear drive 76448-18840
190/190 .404/.404 276/276 112 76448-18840
204/214 .469/.478 262/277 112 76448-20580
VIN U. Snout is .860 long.
Buick Skylark and Somerset.
Oldsmobile Calais.
Pontiac Grand Am.
Stock 1985-89 76448-18840
190/190 .404/.404 276/276 112 76448-18840
204/214 .469/.478 262/277 112 76448-20580
CAM KEY
Advance or retard your cam to suit your need.
2 degree short Mr. Gasket 987
4 degree short Mr. Gasket 988
CAM LUBE
3 oz. Tube, Paste Bel-Ray Anti-Seize
4 oz. Bottle, LL-5 Liquid Sealed Power 55-400
LIFTER SET
1977-79 Hydraulic Sealed Power HT969*8
1977-84 Hydraulic high rev Speed Pro HT969R*8
1979-84 Hydraulic Sealed Power HT2077*8
1984-92 Hydraulic roller HT2148*8
PUSH ROD SET
1977-79 except cross flow 9.677" Sealed Power RP3180*8
1977-79 chrome moly 9.680" Speed Pro RP3214R*8
1977-79 +.124" lift 9.748" Sealed Power RP3276*8
1979-81 cross flow 8.906" Sealed Power RP3210*8
1979-81 +.123" lift 8.976" Sealed Power RP3211*8
1982-84 exc hyd roller 8.976" Sealed Power RP3211*8
1984 hydraulic roller 8.276" Sealed Power RP3263*8
1985-86 hydraulic roller 8.383" Sealed Power RP3170*8
1987-92 8.276" Sealed Power RP3263*8
ROCKER ARM SET
Stock shoulder bolt style Sealed Power R894*8
TIMING SET
1977-90 Stock gear set 1977-90 Sealed Power 221-2542S
1985-89 "U" Stock gear set Sealed Power 221-2544S
1990-91 3pc chain set exc. "U" Sealed Power KT3-378S
VALVE KEEPER SET
1977-86 Stock, 11/32 Sealed Power VK115*16
1977-86 Hardened, 11/32 Speed Pro VK115R*16
1977-86 Machined/Hardened, 11/32 Speed Pro VK315R*16
Machined/Hardened, 11/32, 3/8x7 Speed Pro VK415R*16
1984 Stock Fiero Sealed Power VK216*16
1987-92 Stock Sealed Power VK216*16
Machined/Hardened, 5/16, 11/32x7 Speed Pro VK244R*16
Machined/Hardened, 5/16, 3/8x7 Speed Pro VK444R*16
VALVE SPRING INSERT
1.250" x .875" x .030" Sealed Power 259-201B
1.250" x .875" x .060" Sealed Power 259-201A
1.360" x 1.000" x .015" Sealed Power 259-102C
1.360" x 1.000" x .030" Sealed Power 259-102B
1.360" x 1.000" x .060" Sealed Power 259-102A
Set of 8 standard inserts, mix and match
1.250" x .875" x .015" hardened Speed Pro 259-201CHP
1.360" x 1.000" x .015" hardened Speed Pro 259-102CHP
1.360" x 1.000" x .030" hardened Speed Pro 259-102BHP
1.360" x 1.000" x .060" hardened Speed Pro 259-102AHP
Set of 8 hardened inserts, mix and match
VALVE SPRING RETAINER SET
For VS739R as below Speed Pro VSR7000R*8
Chrome-Moly 1.25"OD, 11/32x7+.050 Speed Pro VSR7000R*8
For VS890R as below Speed Pro VSR7001R*8
Chrome-Moly 1.44"OD, 3/8x7, +.060 Speed Pro VSR7001R*8
For VS890R as below Speed Pro VSR7018R*8
Chrome-Moly 1.37"OD, 11/32x7 Speed Pro VSR7018R*8
For VS741R as below Speed Pro VSR7006R*8
Chrome-Moly 1.40"OD, 3/8x7, +.080 Speed Pro VSR7006R*8
VALVE SPRING SET
1977-85 stock height is 1.66"
1977-85 Stock Sealed Power VS521*8
1986 Stock Sealed Power VS921*8
1987-88 Stock Sealed Power VS861*8
1989-90 Stock Sealed Power VS922*8
1991-92 Stock Sealed Power VS925*8
Performance and Race Valve Spring Selection:
Int.Dur.@.050 Seat Pressure Open Pressure
180 to 200 90 to 100 225 to 250
200 to 220 100 to 110 250 to 275
220 to 240 110 to 120 275 to 300
240 to 260 120 to 130 300 to 325
Use Valve Spring Shims to adjust height and pressure.
Performance spring lift and pressure is based on 1.66" stock
height and the variance caused by the retainer.
S Single springs
S-D Single springs with dampeners
D Dual springs
D-D Dual Springs with dampeners
Dual valve springs require cylinder head machining.
S/D 1.26"OD/100#@1.71"/277#@.500Lift Speed Pro VS739R*8
D 1.38"OD/110#@1.72"/260#@.670Lift Speed Pro VS890R*8
D 1.39"OD/124#@1.66"/260#@.610Lift Speed Pro VS890R*8
D 1.39"OD/138#@1.74"/319#@.590Lift Speed Pro VS741R*8
VALVE STEM SEAL SET (machining required)
.343"v .562"g .728" rubber/teflon Sealed Power ST2001*8
.343"v .531"g .697" rubber/teflon Sealed Power ST2003*8
.343"v .531"g .650" teflon Speed Pro ST2018R*8
VALVE STEM SEAL GUIDE CUTTER
For ST2001 seals Sealed Power MT2001H
For ST2003 and ST2018R seals Sealed Power MT2003H
VALVE - EXHAUST
1977-79 exc cross flow, 1.50" Sealed Power V2078
1979-86 cross flow, 1.50" x 11/32 Sealed Power V2203
1987-88, 1.50" x 8mm Sealed Power V2436
1989-92, 1.50" x 8mm Sealed Power V2529
VALVE - EXHAUST SET OF 4
Check out the tech section for an explanation of valve (material).
1.50" x 11/32" x 4.924" (21-2N) Sealed Power V2078*4
1.50" x 11/32 x 4.619" (21-2N) Sealed Power V2203*4
1.50" x 8mm x 4.355" (21-2N) Sealed Power V2436*4
1.50" x 8mm x 4.541" (21-2N) Sealed Power V2529*4
VALVE - INTAKE
1977-79 exc cross flow, 1.72" Sealed Power V2079
1979-86 cross flow, 1.72" x 11/32 Sealed Power V2204
1987-88, 1.72" x 8mm Sealed Power V3941
1989-92, 1.72" x 8mm Sealed Power V2530
VALVE - INTAKE SET OF 4
Check out the tech section for an explanation of valve (material).
1.72" x 11/32" x 4.924" (1047) Sealed Power V2079*4
1.72" x 11/32 x 4.669" (1041) Sealed Power V2204*4
1.72" x 8mm x 4.394" (1547) Sealed Power V3941*4
1.72" x 8mm x 4.591" (1547) Sealed Power V2530*4
ENG. DESCRIPTION PART NUMBER
CAM BEARING SET
Check out the tech section for an explanation of bearing (material).
Stock (Babbit) F-M 1461M
CONNECTING ROD - RECONDITIONED
1977-84 F-M CR1455
ENGINE OVERHAUL KIT
SEALED POWER kits include Sealed Power rings, Federal-Mogul
rod + main bearings, full gasket set.
ENGINE REBUILD MASTER KIT
SEALED POWER kits include Sealed Power rings, Federal-Mogul
rod + main + cam bearings, full gasket set, Sterling pistons,
oil pump, timing set, stock cam and lifters, and frost plugs.
FROST PLUG BLOCK KIT - BRASS
1977-85 Sealed Power 381-8045
1986-92 Sealed Power 381-8074
MAIN BEARING SET
Check out the tech section for an explanation of bearing (material).
1977-92 except "U", 1.009 flange F-M 6689M
"U", .943" flange F-M 6690M
OIL PUMP
1977-79 except cross flow Sealed Power 224-4158
1977-79 high volume Sealed Power 224-4158HV
1979-87 cross flow Sealed Power 224-41239
1979-87 cross flow, high volume Sealed Power 224-41239V
1979-87, performance high volume Speed Pro 224-111R
OIL PUMP INTERMEDIATE SHAFT
Stock Sealed Power 224-61239
PISTON SET
Sterling pistons are cast except when noted as hypereutectic.
TRW pistons are forged.
8.5:1 TRW Forged L2484F*4
9.1:1 TRW Forged L2485F*4
PISTON PIN BUSHING SET
RING SET (5/64-5/64-3/16)
Plain cast Sealed Power E382X
Moly cast Sealed Power E382K
Plasma moly, ductile iron Speed Pro R10511
P.Moly, ductile iron, file fit Speed Pro R10355
RING SET (1/16-1/16-3/16)
RING SET (1/16-1/16-1/8)
ROD BEARING SET
Check out the tech section for an explanation of bearing (material).
Stock F-M 4-2500RAA
ENG. DESCRIPTION PART NUMBER
BOTTOM END GASKET SET
CAM CHANGE GASKET SET
1977-83 McCord 95-4009
ENGINE OVERHAUL GASKET SET
HEAD GASKET
HEADER GASKET
INTAKE MANIFOLD GASKET
OIL PAN GASKET SET
TIMING COVER GASKET SET
VALVE COVER GASKET
VALVE GRIND GASKET SET
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