Page 477 - 2022-23 Auto Performance Drag Racing

2022-23
Severe-Duty “Pro-Flo” Valves
DRAG RACING
Severe-duty “Pro-Flo” Valves offer many of the same features as the Race-Flo line, but are made of severe -duty material. “Pro-Flo” design offers an increase in flow up to 40% over other popular designs. Exhaust valves are made from XH-428 stainless steel and intake valves are made from NK-844 stainless steel. Valve stems are fully chromed with hardened tips. Valves are swirl polished and fully machined. Sold in sets of eight. To order individually, replace the -8 with a -1 at end of part number).
Part No. Type
Small Block Chevrolet 262-400
Size Stem
1.600" .3415" 1.600" .3415" 2.055" .3415" 2.080" .3415"
Installed Height
Stock .100" Longer .100" Longer .100" Longer
Stock Stock
MAN11827-8 MAN11823-8 MAN11824-8 MAN11772-8
Exhaust Exhaust Intake Intake
Big Block Chevrolet 396-454 - Stock 3/8" Stem Dia.
MAN11876-8 Intake 2.080" .3720" MAN11832-8 Intake 2.190" .3720"
Severe-Duty Valves
Severe-duty exhaust valves are made of XH-428 stainless steel which is nearly double the strength of imported valves. Intake valves at 1500°F, constructed of NK-844 stainless steel, have over 1000 times better fatigue life
than imported valves. Sold in sets of eight.
Part No. Type
Small Block Chevrolet 262-400
Size Stem
1.500" .3415" 1.500" .3415" 1.600" .3415" 1.600" .3415" 1.600" .3415" 1.600" .3110" 1.600" .3415" 1.600" .3415" 1.600" .3415" 1.600" .3415" 1.600" .3415" 1.625" .3415" 1.625" .3415" 1.937" .3415" 2.020" .3415" 2.020" .3415" 2.020" .3415" 2.055" .3415" 2.080" .3415" 2.080" .3415" 2.100" .3415"
Installed Height
Stock .100" Longer Stock Stock .100" Longer .100" Longer .100" Longer .200" Longer .200" Longer .400" Longer .500" Longer .100" Longer .600" Longer Stock Stock .100" Longer .200" Longer .100" Longer .100" Longer .200" Longer .200" Longer
Stock Stock
Stock
Stock .100" Longer Stock Stock .100" Longer .100" Longer
Part No. Type Size Stem
Big Block Chevrolet 396-454 - 11/32" Valve Stem Dia.
Installed Height
Stock .100" Longer .100" Longer Stock .100" Longer .100" Longer Stock .100" Longer Stock .100" Longer .250" Longer .100" Longer .250" Longer .350" Longer .250” Longer .350" Longer
.100" Longer Stock Stock .100" Longer .100" Longer
MAN11567-8 MAN11887-8 MAN11543-8* MAN11595-8** MAN11539-8§ MAN11231-8 MAN11869-8 MAN11751-8† MAN11865-8†† MAN11755-8 MAN11513-8 MAN11537-8 MAN11763-8 MAN11592-8 MAN11596-8 MAN11826-8 MAN11544-8 MAN11846-8 MAN11844-8 MAN11858-8 MAN11862-8
Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Exhaust Intake Intake Intake Intake Intake Intake Intake Intake
MAN11843-8
MAN11815-8§ MAN11845-8§§ MAN11817-8 MAN11811-8§ MAN11847-8§§ MAN11800-8 MAN11822-8 MAN11802-8 MAN11850-8 MAN11856-8 MAN11842-8 MAN11854-8 MAN11878-8 MAN11838-8 MAN11880-8
Exhaust 1.880" .3415"
MAN11563-8 MAN11535-8 MAN11520-8 MAN11562-8 MAN11524-8 MAN11530-8
Valve Locks
Exhaust 1.880" .3715"
Exhaust Exhaust Exhaust Exhaust Exhaust Intake Intake Intake Intake Intake Intake Intake Intake Intake
1.880" 1.880" 1.900" 1.900" 1.900" 2.190" 2.190" 2.250" 2.250" 2.250" 2.300" 2.300" 2.300" 2.325”
.3415" .3415" .3415" .3415" .3415" .3415" .3415" .3415" .3415" .3415" .3415" .3415" .3415" .3415” .3415"
.3415" .3415" .3415" .3415" .3415"
Intake 2.350"
Ford 351C, Big Block Ford 429-460
Small Block Chevrolet Gen. III/IV LS7
MAN11679-8 Exhaust
MAN11801-8 MAN11813-8 MAN11800-8 MAN11822-8 MAN11850-8
Exhaust Exhaust Intake Intake
1.760" 1.810" 2.190" 2.190"
1.610" .3136" MAN11688-8 Intake 2.205" .3133"
Intake 2.250"
Big Block Chevrolet 396-454 - Stock 3/8" Valve Stem Dia.
MAN11553-8 Exhaust 1.720" .3715"
*Valve has 7° dish face and 4.911" length. **Valve has flat face and 4.936" length. †Valve has 5.165" length. ††Valve has 5.121" length. §Valve has 10° underhead angle. §§Valve has 25° underhead angle.
Exhaust Intake Intake Intake Intake
1.900" .3715" 2.190" .3720" 2.250" .3720" 2.250" .3720" 2.300" .3720"
Heat-treated black oxide-coated steel locks are available in extra-thick Super 7° or traditional 10° for conven- tional or bead lock valves. Sets of 8 (16-pieces) or 16 (32-pieces).
Part No.
Super 7°
MAN13050-8 MAN13051-8 MAN13052-8 MAN13060-8 MAN13061-8 MAN13062-8 MAN13080-16 MAN13081-16 MAN13083-16 MAN13084-16
Machined 7°
MAN13094-16
Description
5/16” Valve Locks 5/16" Valve Locks 5/16" Valve Locks 11/32” Valve Locks 11/32" Valve Locks 11/32" Valve Locks 5/16" Valve Locks 11/32" Valve Locks 11/32" Valve Locks 11/32" Valve Locks
8mm Valve Locks
Installed Height
.050” Less Standard .050" More .050” Less Standard .050" More Standard .050" Less Standard .050" More
.050” Less
Lock Style
Bead Loc Bead Loc Bead Loc Bead Loc Bead Loc Bead Loc Conventional Conventional Conventional Conventional
GM LS/LT-1
Part No.
MAN13096-16 MAN13097-16^ MAN13150-8 MAN13151-8 MAN13152-8 MAN13160-8 MAN13161-8‡ MAN13162-8 MAN13170-8 MAN13194-16 MAN13195-16 MAN13198-16
Description
5/16" Valve Locks 11/32" Valve Locks 5/16” Valve Locks 5/16" Valve Locks 5/16" Valve Locks 11/32" Valve Locks 11/32" Valve Locks 11/32" Valve Locks 7mm Valve Locks 11/32" Valve Locks 3/8" Valve Locks 11/32" Valve Locks
Installed Height
Standard
Standard .050” Less Standard .050" More .050" Less Standard .050" More Standard Standard Standard .050" More
Lock Style
Conventional Conventional Bead Loc Bead Loc Bead Loc Bead Loc Bead Loc Bead Loc Bead Loc Conventional Conventional Conventional
10°
^Not recessed to accept a wear cap. ‡Lightweight titanium material
475