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Complete 6-71 Roots Supercharger Kit Compatible with Small Block Chevy 265/283/305/307/327/350/383/400 - Blower with Intake Manifold, Gilmer Pulleys, Belt & Gaskets - Adds 45-55% HP

  • Based on 2 reviews
Condition: New
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Availability: 20 left in stock
Fulfilled by WrenchIt

Arrives Tuesday, Jul 7
Order within 22 hours and 12 minutes
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Features

  • [ADDS 45-55% HORSEPOWER] Complete 6-71 Roots-style supercharger kit pumps streetable, instant-throttle boost into your Small Block Chevy - case, double-pinned 3-lobe rotors, factory-timed for consistent boost.
  • [FITS ALL SBC BLOCKS] Bolts to standard-deck 265/283/305/307/327/350/383/400. Carb adapter accepts dual 4-barrel square-bore ( 600-850 cfm typical). Verify rotating assembly for sustained race use.
  • [COMPLETE BOLT-ON KIT] Includes supercharger, intake manifold, snout, 50T/55T Gilmer pulleys, idler with bracket, 3in belt, V-belt crank pulley, dual-carb adapter, and all gaskets. Carbs/dist/fuel sold separately.
  • [BUILT TO SURVIVE BOOST] Heavy-duty front/rear bearing plates handle sustained PSI. Double-pinned rotors prevent slip under detonation. Pop-off valve relocated to rear. 12-month warranty.
  • [DIAL IN YOUR BOOST] Ships with 50T/55T pulleys for popular street range. 48T, 60T, 65T sold separately to adjust overdrive for race or street. Intended for racing - verify local emissions.

Manufacturer: ‎Speedmaster


Brand: ‎Speedmaster


Model: ‎PCE460.1009


Item Weight: ‎120 pounds


Product Dimensions: ‎26 x 20.75 x 16 inches


Item model number: ‎PCE460.1009


Manufacturer Part Number: ‎PCE460.1009


Date First Available: January 13, 2025


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Tuesday, Jul 7

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Top Amazon Reviews


  • Things you need to know before you buy. Things you need to know before you buy.
While this kit is nice looking and functions properly the last 80 miles since installation, I feel it is important to say the price is a bit high, the case is longer than other 6-71 kits which even with a small cap distributor you will have clearance issues unless you have a tiny cap unilite type distributor or modify the bearing grease cover like I did. The pulleys are set for 9% under/overdrive, Most s.b.c. street kits are set at 12%. So, if you want your 350 to get 7-10 ps.i. boost you need to purchase the 60 tooth as well .Instructions are not available on the speedmaster site despite what it implies. I went to their competitor that this appears to be a knock off of that they kindly have up fo all to see. Shipping was prompt and delivered condition was good. ... show more
Reviewed in the United States on September 15, 2025 Reviewed in the United States on September 15, 2025 by Joe

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