4.000' MOLY RING 5/64 5/64 3/16
Chrome Moly V8 Ring Set
4.000 Bore STD, 5/64"X 5/64" X 3/16", Std Tension
Speed-Pro piston rings dominate the racing industry with technically advance design, dedicated research and superior quality. We don't rely on advertised gimmicks and "trick of the week" deigns. Our rings deliver optimal cylinder sealing under true operating conditions, and provide maximum oil control. Speed-Pro pistons rings deliver superior performance under gruelling race conditions every weekend, on oval tracks and drag strips world wide. Put our performance heritage, racing experience and engineering superiority to work in your car.
4.020' MOLY RING 5/64 5/64 3/16
Chrome Moly V8 Ring Set
4.020 Bore +.020, 5/64"X 5/64" X 3/16", Std Tension
Speed-Pro piston rings dominate the racing industry with technically advance design, dedicated research and superior quality. We don't rely on advertised gimmicks and "trick of the week" deigns. Our rings deliver optimal cylinder sealing under true operating conditions, and provide maximum oil control. Speed-Pro pistons rings deliver superior performance under gruelling race conditions every weekend, on oval tracks and drag strips world wide. Put our performance heritage, racing experience and engineering superiority to work in your car.
4.030' MOLY RING 5/64 5/64 3/16
Chrome Moly V8 Ring Set
4.030 Bore +.030, 5/64"X 5/64" X 3/16", Std Tension
Speed-Pro piston rings dominate the racing industry with technically advance design, dedicated research and superior quality. We don't rely on advertised gimmicks and "trick of the week" deigns. Our rings deliver optimal cylinder sealing under true operating conditions, and provide maximum oil control. Speed-Pro pistons rings deliver superior performance under gruelling race conditions every weekend, on oval tracks and drag strips world wide. Put our performance heritage, racing experience and engineering superiority to work in your car.
4.040' MOLY RING 5/64 5/64 3/16
Chrome Moly V8 Ring Set
4.040 Bore +.040, 5/64"X 5/64" X 3/16", Std Tension
Speed-Pro piston rings dominate the racing industry with technically advance design, dedicated research and superior quality. We don't rely on advertised gimmicks and "trick of the week" deigns. Our rings deliver optimal cylinder sealing under true operating conditions, and provide maximum oil control. Speed-Pro pistons rings deliver superior performance under gruelling race conditions every weekend, on oval tracks and drag strips world wide. Put our performance heritage, racing experience and engineering superiority to work in your car.
4.060' MOLY RING 5/64 5/64 3/16
Chrome Moly V8 Ring Set
4.060 Bore +.060, 5/64"X 5/64" X 3/16", Std Tension
Speed-Pro piston rings dominate the racing industry with technically advance design, dedicated research and superior quality. We don't rely on advertised gimmicks and "trick of the week" deigns. Our rings deliver optimal cylinder sealing under true operating conditions, and provide maximum oil control. Speed-Pro pistons rings deliver superior performance under gruelling race conditions every weekend, on oval tracks and drag strips world wide. Put our performance heritage, racing experience and engineering superiority to work in your car.
4.000' CAST RING 5/64 5/64 3/16
Cast V8 Ring Set
4.000 Bore STD, 5/64"X 5/64" X 3/16", Std Tension
Speed-Pro piston rings dominate the racing industry with technically advance design, dedicated research and superior quality. We don't rely on advertised gimmicks and "trick of the week" deigns. Our rings deliver optimal cylinder sealing under true operating conditions, and provide maximum oil control. Speed-Pro pistons rings deliver superior performance under gruelling race conditions every weekend, on oval tracks and drag strips world wide. Put our performance heritage, racing experience and engineering superiority to work in your car.
4.030' CAST RING 5/64 5/64 3/16
Cast V8 Ring Set
4.030 Bore +.030, 5/64"X 5/64" X 3/16", Std Tension
Speed-Pro piston rings dominate the racing industry with technically advance design, dedicated research and superior quality. We don't rely on advertised gimmicks and "trick of the week" deigns. Our rings deliver optimal cylinder sealing under true operating conditions, and provide maximum oil control. Speed-Pro pistons rings deliver superior performance under gruelling race conditions every weekend, on oval tracks and drag strips world wide. Put our performance heritage, racing experience and engineering superiority to work in your car.
4" 1/16 1/16 3/16 MOLY RINGS
Plasma Moly V8 Ring Set
4.020 Bore, 1/16" X 1/16" X 3/16", Std Tension
Speed-Pro piston rings dominate the racing industry with technically advance design, dedicated research and superior quality. We don't rely on advertised gimmicks and "trick of the week" deigns. Our rings deliver optimal cylinder sealing under true operating conditions, and provide maximum oil control. Speed-Pro pistons rings deliver superior performance under gruelling race conditions every weekend, on oval tracks and drag strips world wide. Put our performance heritage, racing experience and engineering superiority to work in your car.
CHEV 427/454 & CHRYS 383 RINGS
Chrome Moly V8 Ring Set
4.290 Bore +.040, 5/64"X 5/64" X 3/16", Std Tension
Speed-Pro piston rings dominate the racing industry with technically advance design, dedicated research and superior quality. We don't rely on advertised gimmicks and "trick of the week" deigns. Our rings deliver optimal cylinder sealing under true operating conditions, and provide maximum oil control. Speed-Pro pistons rings deliver superior performance under gruelling race conditions every weekend, on oval tracks and drag strips world wide. Put our performance heritage, racing experience and engineering superiority to work in your car.
CHEV 383 12CC DISH HYP PISTON
350 ci SB Chev - Dish Top Hypereutectic Pistons
383 c.i., 4.030" bore, 3.750 stroke, 5.700" rod length, -12.0cc dome volume
Available on both hypereutectic and POWERFORGED pistons, DUROSHIELD is an exclusive moly-graphite skirt
coating that extends engine life and essentially eliminates scuffing. This technologically advanced coating is precisely applied to the piston through a computer-controlled process.
DUROSHIELD skirt coated pistons:
Reduce friction for increased fuel economy and horsepower
Essentially eliminate scuffing and wear
Prevent damage from inadequate lubrication, especially at start-up
Improve cylinder sealing for less blow-by and more power
Require no increase in skirt clearance
Piston Specifications :
CID: 383
Bore: 4.030
Stroke: 3.750
Rod Length: 5.700
Compression Height: 1.425
Compression Ratio with 64cc chamber volume: 9.67
Compression Ratio with 72cc chamber volume: 8.96
Compression Ratio with 76cc chamber volume: 8.65
Dome Volume: -12.0cc
Pin Type: Press or float
Recommended Ring Set: Moly - SPE251K 030, STD Fit - SPR9903 030, File Fit - SPR9343 035
Coated skirt