• PS CB:
Valve Bowls Blended• PS MI:
Match Intake Port to MG 2021 • PS Valve Job:
Competition Valve Job • Intake Valves:
2.400 x 6.030 o.a.l. – BR 81403 • Exhaust Valves:
1.800 x 5.930 o.a.l. – BR 81080 • Valve Springs:
1.645 Roller Valve Spring – PAC 1247 or PAC 1248,
315 lb Closed, 875 lb Open,
2.100 Installed Height,
.850 Maximum Lift (Spring Upgrade) 1.640 Roller Valve Spring – PAC 1224,
270 lb Closed, 775 lb Open,
2.050 Installed Height,
.800 Maximum Lift (Spring Upgrade) • Retainers:
1.625 10° Titanium – MA 23640
1.645 10° Titanium – MA 2001 • Valve Locks:
10° Jumbo – CC 611 • Valve Seals:
11/32 – US VS529V (1.625 Spring)
11/32 – US VS485V (1.645 Spring) | • Torque Heads:
70 ft-lb• Torque Rocker Stands:
40-45 ft-lb • Intake Gaskets:
BRODIX MG 2021, FLATOUT FG 8275 • Head Gaskets:
4.600 – FEL-PRO 1057, COMETIC C5434 • Exhaust Gaskets:
FEL-PRO 1412 • Valve Cover Gaskets:
BRODIX MG 2020, FLATOUT FG 6108.3 • Head Studs:
BRODIX SK HS SR 20 For BRODIX Aluminum Block
AR 235-4323 for Cast Iron Block • Accessory Bolt Holes Are Drilled • Spark Plug Starting Points:
NGK R5671A-10
For Alcohol
NGK R5671A-9
For Racing Gas • Intake Valve Seats:
P 2.460 x .450 • Exhaust Valve Seats:
P 1.900 x .450 A45 • Intake and Exhaust Valve Guides:
BH 545 11/32 PL • Spring Pockets:
May Not be Cut Any Larger
or Deeper Than 1.750 • Valve Angle:
20° and 4° Intake
13° and 4° Exhaust • Angle Milling:
.0066 in Per cc • Flat Milling:
.0050 in Per cc • Angle Machining:
Not Available • Pushrod Slots:
Special • Stud Girdle:
N/A • Rocker Arms:
JESEL Or T&D Shaft System –
JESEL KPS 441184, T&D 3142 • Lifters:
Standard • Pistons:
Special • Pushrods:
Special Length • Valve Covers:
MOROSO 68483 • Intake Manifolds:
BM 2020 (Standard)
BM 2021 (Tall Deck) • 4.600 Minumim Bore |
