Page 537 - 2021-22 Auto Performance_Circle Track
P. 537
* To purchase individually, substitute -1 for the -8 suffix in part number.
Race Flo Valves
Race Flo valves have been necked down in the port area to
intake valves are NK-842 stainless steel. Valve stems are fully chromed with hardened tips. Valves are swirl polished and fully machined. Sold in sets of eight.*
Budget Replacement Valves
Valves are sold in sets of eight.*
Part No. Type Size Stem Installed Height
Budget Performance Valves
Fully-machined swirl polished valves include chrome stems and hard tips. A top-of-the-line valve for the val- ue-conscious engine builder. Stock and +.100" lengths available. Sold in sets of eight.*
Part No.
Type Size Stem
Installed Height
Small Block Chevrolet 262-400
MAN10077-8
Exhaust
1.500"
.3415"
Stock
MAN10649-8
Exhaust
1.600"
.3415"
Stock
MAN10476-8
Intake
1.940"
.3415"
Stock
MAN10650-8
Intake
2.020"
.3415"
Stock
Small Block Chevrolet 262-400
MAN11521-8
Exhaust
1.500"
.3415"
Stock
MAN11501-8
Exhaust
1.560"
.3415"
Stock
MAN11565-8
Exhaust
1.600"
.3415"
Stock
MAN11545-8
Exhaust
1.600"
.3415"
.100" Longer
MAN11522-8
Intake
1.940"
.3415"
Stock
MAN11500-8
Intake
2.000"
.3415"
Stock
MAN11566-8
Intake
2.020"
.3415"
Stock
MAN11568-8
Intake
2.055"
.3415"
Stock
MAN11546-8
Intake
2.055"
.3415"
.100" Longer
MAN11560-8
Intake
2.080"
.3415"
.100" Longer
Small Block Ford 289-351W
MAN11523-8
Exhaust
1.465"
.3415"
Stock
MAN11531-8†
Exhaust
1.600"
.3415"
Stock
MAN11578-8
Intake
1.850"
.3420"
Stock
MAN11566-8†
Intake
2.020"
.3415"
Stock
Part No.
Type Size Stem
Installed Height
Small Block Chevrolet 262-400
MAN10577-8
Exhaust
1.500"
.3415"
Stock
MAN10549-8
Exhaust
1.600"
.3415"
Stock
MAN10551-8
Exhaust
1.600"
.3415"
.100" Longer
MAN10576-8
Intake
1.940"
.3415"
Stock
MAN10550-8
Intake
2.020"
.3415"
Stock
MAN10552-8
Intake
2.020"
.3415"
.100" Longer
MAN10554-8
Intake
2.055"
.3415"
Stock
MAN10556-8
Intake
2.055"
.3415"
.100" Longer
† Ford valves with .250" tips must use non-rail type stock rockers or roller rockers.
Race Master Valves
Manley’s Race Master valves have straight, fully chromed stems and hardened tips. Valves are thoroughly machined and swirl polished. Intake valves are made of NK-842 stainless steel and exhaust valves are XH-426 stainless steel. Sold in sets of eight (unless noted).*
Part No.
Type Size Stem
Installed Height
Small Block Chevrolet 262-400
MAN11861-8
Exhaust
1.500"
.3415"
Stock
MAN11863-8
Exhaust
1.600"
.3415"
Stock
MAN11877-8
Exhaust
1.600"
.3415"
.100" Longer
MAN11860-8
Intake
1.940"
.3415"
Stock
MAN11864-8
Intake
2.020"
.3415"
Stock
MAN11318-8
Intake
2.020"
.3415"
.100" Longer
MAN11806-8
Intake
2.055"
.3415"
Stock
MAN11810-8
Intake
2.055"
.3415"
.100" Longer
MAN11808-8
Intake
2.080"
.3415"
Stock
MAN11812-8
Intake
2.080"
.3415"
.100" Longer
Small Block Chevy Gen. III LS1/LS2 (LS6 Head)
MAN11361-8
Exhaust
1.550"
.3136"
Stock
MAN11360-8
Intake
2.000"
.3136"
Stock
MAN11362-8
Intake
2.020"
.3136"
Stock
Small Block Chevy Gen. III LS3/L99 (L92 Head)
MAN11621-8
Exhaust
1.590"
.3136"
Stock
MAN11620-8
Intake
2.165"
.3133"
Stock
Small Block Chevy Gen. IV LS7
MAN11689-8
Exhaust
1.615"
.3136"
Stock
Ford 2300cc 4-Cylinder
MAN11793-4†
Exhaust
1.590"
.3415"
Stock
MAN11792-4†
Intake
1.890"
.3415"
Stock
Street Master Valves
Straight-stemmed XH-424 stainless exhaust valves and NK-841 stainless intake valves have chrome stems, hard tips, swirl-polished underhead areas, and fully machined combustion faces. Street Master valves are an excellent choice for mild performance engines. Sold in sets of eight.*
Part No. Type Size Stem Installed Height
Street Flo Valves
Made with the same quality materials as the Street Master, but with “Pro-Flo” underhead design. Sold in sets of eight.*
† Finished valves for “Esslinger” flat tappet applications.
Severe-Duty “Pro-Flo” Valves
Severe-Duty “Pro-Flo” valves have many features of the Race-Flo line, but are made of severe-duty material. 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. “Pro- other popular designs. Valves are swirl polished and fully machined. Sold in sets of eight.*
Small Block Chevrolet 262-400
MAN10777-8
Exhaust
1.500"
.3415"
Stock
MAN10749-8
Exhaust
1.600"
.3415"
Stock
MAN10776-8
Intake
1.940"
.3415"
Stock
MAN10750-8
Intake
2.020"
.3415"
Stock
Part No.
Type Size Stem
Installed Height
Small Block Chevrolet 262-400
MAN10721-8
Exhaust
1.500"
.3415"
Stock
MAN10765-8
Exhaust
1.600"
.3415"
Stock
MAN10766-8
Intake
2.020"
.3415"
Stock
Small Block Ford 289-351W
MAN10775-8
Exhaust
1.550"
.3415"
Stock
MAN10778-8
Intake
1.850"
.3420"
Stock
Part No. Type
MAN11824-8 Intake
TRACK
CIRCLE 2021-22
Size Stem
2.055" .3415"
Installed Height
.100" Longer
Small Block Chevrolet 262-400
MAN11823-8
Exhaust
1.600"
.3415"
.100" Longer
MAN11772-8
Intake
2.080"
.3415"
.100" Longer
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