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8-71 Superchargers - Big Block Chevrolet
- 8-71 Supercharger Kit
- Big Block Chevy (Standard Deck)
- Drive Pitch: 8mm
- 11.5% Underdrive Ratio
- Polished Finish
Note: This kit includes two extra 1/8" NPT plugs. Your manifold may have two 1/8" NPT ports tapped in the back of it. These are vacuum / boost ports that can be usedfor a boost gauge, boost reference power valves, or any other items that need tobe connected to a boost / vacuum source. If these ports are not needed, usethe included plugs to block these ports.
Pop Off Valve Installation Guide
- More than 40 Years in the Supercharger Business
- 8-71 Superchargers are perfectly suited for modified engines with 7.5:1 to 8:1 compression ratios. May require race gas unless pulley ratios are altered to reduce effective compression ratio below 12:1 (See 8-71 Supercharger Pulleys)
- Kits are designed for stamped steel V-belt accessories. The use of billet pulleys may require custom machine work and/or spacers.
- Must use short water pumps with maximum 2 "V" pulley.
- Weiand highly recommendeds the use of a double keyed crankshaft and double keyed, steel, SFI approved balancer.
Note: Will not clear GM HEI distributor. Engine not included.
Weiand superchargers can be found in all aspects of racing, from tractor pulls to the quarter mile. When you pull into your local cruise-in or dragstrip with one of these 8-71 superchargers sticking through the hood you are sure to be noticed. Producing 200-300 more horsepower, the 8-71 supercharger is for the hard core enthusiast!
All 8-71 kits come with the extra tough 8mm belt configuration for maximum strength and durability.
Installation Notes:Part TypeSupercharger
Product LineWeiand 8-71 Nostalgic Street Superchargers
BrandWEIAND
Package Height22.25
Package Width23.5
Package Length28.5
Weight143.0 PG
Part CategoryPerformance Parts
Wiring Harness IncludedNo
Fuel Pump IncludedNo
Engine Block StyleStock/OEM standard deck
Damper IncludedNo
Linkage IncludedNo
Intercooler IncludedNo
Computer Chip/Programmer IncludedNo
Pulley StyleGilmer
Regulator IncludedNo
Nose StyleLong
QuantitySold as a kit
Ptfe Lined RotorsNo
Supercharger Pulley IncludedNo
Carburetor QuantityTwo
Fuel Rails IncludedNo
Supercharger Model871
Fuel Injectors IncludedNo
Belt Tensioner IncludedNo
Supercharger FinishPolished
Vendor Part Number7186P
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
