Heavy-Duty Mini StarterSmall Block/Big Block Chevy153/168-toothStraight Mounting Configuration3.7:1 Gear Reduction14:1 Compression1.4kW1.9 HP12 lbs.Black/Natural FinishSold Individually JEGS 10009When building an uprated engine don't forget to take into account the starter's ability to crank it over. The JEGS heavy-duty Hitachi-style mini starter is the ideal solution for this challenge. Rated up to 14:1 compression and putting out nearly 2 hp, this unit can take almost anything you throw at it. Ensure peace of mind that your car will reliably start with this heavy-duty unit. FeaturesCompact designInstallation hardware included(2) Shims(2) Bolts(2) Flat washersSpecial Notes:Proper mounting: It is important that the starter mounting flange to the engine block is in the correct position for your starter to engage properly. See photo for reference.Fits all Small Block Chevy except LS series engines (LS1, LS6, 4.8L, 5.3L, and 6.0L)May require the use of "R" Terminal Diode Kit 555-10038, which allows the use of aftermarket mini starters in GM vehicles originally equipped with breaker point ignitions