Page 538 - 2021-22 Auto Performance_Circle Track

Severe-Duty Valves
Made of XH-428 stainless steel which has double the tensile strength of imported valves at 1500°F. Nk-844 stainless steel intake valves have a fatigue strength 1000 times greater than imported valves. Sold in sets of 8.
10° Titanium Retainers
Manley’s 6AL 4V titanium 10° re- tainers have the durability needed for racing engines. Sold in sets of 16.
Spring
Part No. Type Height Spring O.D.
Valve Locks
Dimensions
* To purchase individually, substitute -1 for the -8 suffix in part number.
Part No.
Type Size Stem
Installed Height
A B
C D
Small Block Chevrolet 262-400
MAN11567-8*
Exhaust
1.500"
.3415"
Stock
MAN11543-8*
Exhaust
1.600"
.3415"
Stock
MAN11595-8†
Exhaust
1.600"
.3415"
Stock
MAN11539-8#
Exhaust
1.600"
.3415"
.100" Longer
MAN11869-8
Exhaust
1.600"
.3415"
.100" Longer
MAN11749-8S
Exhaust
1.600"
.3415"
.100" Longer
MAN11705-8‡
Exhaust
1.600"
.3415"
.200" Longer
MAN11865-8S
Exhaust
1.600"
.3415"
.200" Longer
MAN11751-8S
Exhaust
1.600"
.3415"
.200" Longer
MAN11755-8S
Exhaust
1.600"
.3415"
.400" Longer
MAN11513-8S
Exhaust
1.600"
.3415"
.500" Longer
MAN11763-8S
Exhaust
1.625"
.3415"
.600" Longer
MAN11592-8
Intake
1.937"
.3415"
Stock
MAN11886-8
Intake
1.940"
.3415"
.100" Longer
MAN11826-8
Intake
2.020"
.3415"
.100" Longer
MAN11846-8
Intake
2.055"
.3415"
.100" Longer
MAN11818-8
Intake
2.080"
.3415"
Stock
MAN11844-8
Intake
2.080"
.3415"
.100" Longer
MAN11858-8
Intake
2.080"
.3415"
.200" Longer
Small Block Chevy Gen. III LS1/LS2 (LS6 Head)
MAN11673-8
Exhaust
1.550"
.3136"
Stock
MAN11675-8
Exhaust
1.575"
.3136"
Stock
MAN11681-8‡
Exhaust
1.575"
.3136"
Stock
MAN11677-8
Exhaust
1.600"
.3136"
Stock
Small Block Chevy Gen. IV LS7
MAN11679-8
Exhaust
1.610"
.3136"
Stock
MAN11688-8
Intake
2.205"
.3133"
Stock
MAN23640-16
Double
+.100"
1.625"
1.500"
1.175"
.850"
—
MAN23644-16
Double
Std.
1.550"
1.500"
1.140"
.740"
—
MAN23648-16
Double
+.100"
1.580"/1.610"
1.500"
1.150"
.825"
—
MAN23650-16
Double
+.100"
1.550"
1.500"
1.140"
.740"
—
MAN23654-16
Double
Std.
1.625"
1.500"
1.175"
.765"
—
MAN23655-16
Double
+.100"
1.625"
1.500"
1.175"
.765"
—
MAN23658-16
Double
Std.
1.550"
1.500"
1.105"
.710"
—
MAN23660-16
Double
+.100"
1.550"
1.500"
1.105"
.710"
—
MAN23661-16
Double
+.100"
1.550"
1.500"
1.120"
.705"
—
Part No. Description
MAN26362334KS Valve Spring Kit with Titanium Retainers
NexTek Series Oval Track Valve Springs
Put an end to spring degradation. NexTek springs are made from specially wound, heat-treated, and chamfered for retainer clearance. Sold in sets of 16.
Max.
Part No. O.D./I.D. Valve Lift Seat Pressure Open Pressure
* Not recessed to accept a wear cap. ** Lightweight titanium material
Titanium 10° Valve Locks
Lightweight valve locks are precision crafted from durable titanium
Heat-treated, black oxide-coated steel locks are available in extra-thick Super 7° or tradi- tional 10° for conventional or bead lock valves. Sets of 8 (16 pieces) or 16 (32 pieces).
Part No.
Description
Installed Height
Lock Style
Super 7°
MAN13050-8
5/16” Valve Locks
.050” Less
Bead Loc
MAN13051-8
5/16" Valve Locks
Standard
Bead Loc
MAN13052-8
5/16" Valve Locks
.050" More
Bead Loc
MAN13060-8
11/32” Valve Locks
.050” Less
Bead Loc
MAN13061-8
11/32" Valve Locks
Standard
Bead Loc
MAN13062-8
11/32" Valve Locks
.050" More
Bead Loc
MAN13080-16
5/16" Valve Locks
Standard
Conventional
MAN13081-16
11/32" Valve Locks
.050" Less
Conventional
MAN13083-16
11/32" Valve Locks
Standard
Conventional
MAN13084-16
11/32" Valve Locks
.050" More
Conventional
Machined 7°
MAN13094-16
8mm Valve Locks
.050” Less
GM LS/LT-1
10°
MAN13096-16
5/16" Valve Locks
Standard
Conventional
MAN13097-16*
11/32" Valve Locks
Standard
Conventional
MAN13150-8
5/16” Valve Locks
.050” Less
Bead Loc
MAN13151-8
5/16" Valve Locks
Standard
Bead Loc
MAN13152-8
5/16" Valve Locks
.050" More
Bead Loc
MAN13160-8
11/32" Valve Locks
.050" Less
Bead Loc
MAN13161-8**
11/32" Valve Locks
Standard
Bead Loc
MAN13162-8
11/32" Valve Locks
.050" More
Bead Loc
MAN13170-8
7mm Valve Locks
Standard
Bead Loc
MAN13194-16
11/32" Valve Locks
Standard
Conventional
MAN13195-16
3/8" Valve Locks
Standard
Conventional
MAN13198-16
11/32" Valve Locks
.050" More
Conventional
* 7° dish face and 4.911" length # Valve has 10° underhead angle.
† Flat face and 4.936" length S Valve has 15° underhead angle.
‡Extreme duty valve made from top-of-the-line XtremeAlloy exhaust material.
GM LS NexTek Valve Spring Kits NEW! Designed for popular GM LS
engines with a maximum valve lift
of .660", each kit is complete with
(16) high-performance NexTek valve
springs, (16) valve spring locators,
(16) 7° retainers, (16 pair) 7° ma-
chined valve locks, and (16) Viton valve stem seals. Choose from kits with steel or lightweight titanium retainers.
MAN26362134KS
Valve Spring Kit with Steel Retainers
Part No.
Valve Stem
Installed Height
Groove Type
Qty.
MAN13084T-16
.3415”
.050” More
Conventional
16 Pair
MAN13151T-8
.3110"
Standard
Bead Loc
8 Pair
MAN13161T-8
.3415"
Standard
Bead Loc
8 Pair
MAN13194T-16
.3415"
Standard
Conventional
16 Pair
Coil Bind
Late Model, Flat Tappet
MAN221432-16
1.530"/.750"
.630"
162@1.900"
425@1.300"
1.200"
Oval Track, Roller
MAN221440P-16†
1.570"/.760"
.700"
255@2.000"
629@1.300"
1.190"
MAN221441P-16†
1.570"/.750"
.730"
280@2.030"
700@1.300"
1.215"
MAN221442-16
1.560"/.812"
.750"
260@2.000"
660@1.250"
1.200"
BGN, WoO, LM
MAN221443-16
1.580"/.832"
.730"
235@1.950"
610@1.250"
1.170"
MAN221443P-16†
1.580"/.832"
.730"
235@1.950"
610 @ 1.250"
1.170"
MAN221444-16
1.610"/.842"
.750"
235@2.050"
645@1.300"
1.220"
Oval Track, Roller
MAN221445P-16†
1.620"/.852"
.800"
280@2.050"
680@1.250"
1.200"
MAN221452SF-16*
1.550"/.800"
.825"
250@2.025"
750@1.200"
1.150"
Sportsman
MAN221454-16
1.650"/.855"
.850"
290 @ 2.000"
825 @ 1.150"
1.105"
* Signifies Super Finished. † Signifies polished finish.
JIMMY MARS
TODD HEALEY
536 TRACK
CIRCLE 2021-22