“TA-SS” Series Stock-Mount Shocks 'HVLJQHGVSHFL¿FDOO\IRUFODVVHVUHTXLULQJDVWRFNPRXQWVKRFNVWHHOERG\VKRFNVDUHRIIHUHGLQPDQ\GLIIHUHQWYDOY - ing combinations. Ideal for Street Stocks, Hobby Stocks, and Sport Mod race cars. Factory repairable and revalvable. Part No. Position Stroke Compression Rebound Full/Mid-Size GM and Ford; Camaro/Firebird, 1970-81 PROTASS100453 Front 4" 5 3 PROTASS100450 Front 4" 5 5 PROTASS1004511 Front 4" 5 11 PROTASS100458 Front 4" 5 8 PROTASS100460 Front 4" 6 6 PROTASS1004610 Front 4" 6 10 PROTASS100470 Front 4" 7 7 Camaro/Firebird, 1970-81 PROTASS200846 Rear 8" 4 6 PROTASS200862 Rear 8" 6 2 Full/Mid-Size GM PROTASS201840 Rear 8" 4 4 PROTASS201846 Rear 8" 4 6
KATIE ROBINSON
MARCUS BERGLUND
Street Series Forged Pistons Manufactured by Wiseco, ProTru Street Series are affordable are affordable forged pistons with features normally found only in PRUHH[SHQVLYHSLVWRQV3LVWRQVDUHIRUJHGIURPDOXPLQXPLQFOXGHRYHUVL]HGV\PPHWULFDOUDGLXVHGYDOYHSRFNHWVSUHFL - VLRQ¿QLVKHGSLVWRQSLQERUHVSLQRLOLQJDQG$UPRU*OLGHVNLUWFRDWLQJ6ROGLQVHWVRIHLJKWFRPSOHWHZLWKFKURPLXPDOOR\VWHHO piston pins, Spirolox, and piston rings. Part No. Bore Stroke Rod Length Comp. Ht. Comp. Ratio SB Chevy 350 Street Series 23° Hollow Dome WPTPTS502A3 4.030" 3.480" 5.700" 1.560" 12.0:1 WPTPTS502A4 4.040" 3.480" 5.700" 1.560" 12.2:1 WPTPTS502A6 4.060" 3.480" 5.700" 1.560" 12.2:1 SB Chevy 350 Street Series 23° Flat Top (2-Valve Pockets) WPTPTS503A3 4.030" 3.480" 5.700" 1.560" 9.8:1 WPTPTS505A3 4.030" 3.480" 6.000" 1.260" 9.8:1 WPTPTS505A6 4.060" 3.480" 6.000" 1.260" 10.0:1 WPTPTS503A6 4.060" 3.480" 5.700" 1.560" 10.0:1 WPTPTS506A4 4.040" 3.750" 6.000" 1.125" 10.5:1 WPTPTS506A6 4.060" 3.750" 6.000" 1.125" 10.5:1 WPTPTS504A3 4.030" 3.750" 5.700" 1.425" 10.5:1 WPTPTS504A6 4.060" 3.750" 5.700" 1.425" 10.7:1 WPTPTS506A3 4.030" 3.750" 6.000" 1.125" 10.5:1 SB Chevy 400 Street Series 23° Hollow Dome WPTPTS535AS 4.125" 3.750" 6.000" 1.125" 13.3:1 WPTPTS525A3 4.155" 3.750" 6.000" 1.125" 10.4:1 WPTPTS535A4 4.165" 3.750" 6.000" 1.125" 13.6:1 SB Chevy 400 23° Flat Top (2-Valve Pockets) WPTPTS507A3 4.155" 3.480" 5.700" 1.560" 11.6:1 WPTPTS510A3 4.155" 3.750" 5.700" 1.425" 11.6:1 WPTPTS510A4 4.165" 3.750" 5.700" 1.425" 11.6:1 WPTPTS525A3 4.155" 3.750" 6.000" 1.125" 11.6:1 SB Chevy Gen. III LS1 WPTPTS523A903 3.903" 3.622" 6.098" 1.335" 10.7:1 Note: SB Chevy compression ratios are based upon 64cc combustion chamber volume.
CHAPMAN RACING
632
CIRCLE TRACK 2021-22
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