It uses 5/8 diameter press fit screen, Features exclusive asymmetrical helical gears, Has a high volume output- 25% more flow than stock, Offers a significant reduction in pressure ripple (pulsing), Has improved distributor operation- reduction in spark scatter. Melling 10550ST High Volume SB Chevy Oil Pump, 5/8 Inch, Stage 1. These high volume performance oil pumps feature a 25% increase in flow over stock using Melling exclusive helical asymmetrical pump gears. The design of the gears provides for a significant reduction in the pressure ripple (pulsing) found in spur gear pumps.
The reduction in the pressure ripple improves the wear and performance of the components assembled to the pump. The intermediate shaft and distributor gear wear will be reduced along with improvements in the performance of the distributor, less spark scatter. Included with the pump is the 12550 Chrome-Moly intermediate shaft with steel guide along with a lower pressure relief spring.
High volume output- 25% more flow than stock. Significant reduction in pressure ripple (pulsing).
Reduction in torque ripple in pump drive. Improved distributor operation- reduction in spark scatter.Improved distributor gear and intermediate shaft wear. Includes 12550 chrome-moly intermediate shaft with steel guide. Uses 5/8 diameter press fit screen. By 12B on August 01, 2020.
Use this on a dirt track motor. Yes, I recommend this product. By LMSS14 on August 09, 2018. High quality Love how the shaft locks on to the pump gears. Related Items / Suggested Parts.
Melling 10552ST High Volume SB Chevy Oil Pump, 3/4 Inch, Stage 2. Speedway Motors is America's Oldest Speed Shop® and has been a trusted source for specialty rodding and racing products and friendly expert advice for more than 71 years.