We all know the formula for making big power. it goes something likethis: compression, cam with duration as long as your arm, expensivehigh-flowing cylinder heads, big fuel-swilling carburetors. But the listdoesn't stop there. Factor in the high-octane race fuel (read:expensive), a higher-than-practical stall torque converter, deep gearsto accommodate the heads, cam, and carb, oh, and lousy street manners toboot. But fret not, as there is a way to make full-time, obscene,gut-wrenching power without sacrificing streetability on the altar ofthe speed gods, and that way is the way of the supercharger. IndyCylinder Head needs no introduction to the Mopar faithful. They haverecently expanded their already mind-boggling assortment of heads,intakes, and crate motors to include supercharger kits created inconjunction with the Blower Shop (to be sold separately or as an optionon their already stout crate engines). We had the chance to witness oneof Indy's 8-71 blower kits installed on the Holley Road Runner "ProjectM" that was already sporting a stout 500-inch Indy crate big-block. Theentire installation and subsequent dyno testing was performed onHorsepower TV that aired in March. Such a combination producesmind-numbing power, fat torque, great drivability, and unrivaledreliability all on available pump premium gas. Hell, we are so confidentin its reliability that we are going to be driving this beast of aPlymouth on Hot Rod magazine's Power Tour this year with a similiarblown powerplant. That's a 1,500-mile round trip that will test themerits of Indy's creation. Stay tuned.
Indy Cylinder Head builds...
Indy Cylinder Head builds a number of Hemi and wedge crate engines tosuit anyone's needs from mild stock displacement street engines tomulticarbureted big-inch thumpers. Indy is a one-stop shop. Thisparticular gem of an engine displaces 500 ci, 8.25:1 compression ratio(ours was spec'd to run a blower, so the 10:1 pistons were notutilized), a moderate Comp Cams solid flat-tappet cam, and an Indydual-plane intake manifold. Able to produce over 400 lb-ft of torque ata basement-level 2,500 rpm and featuring 8.25:1 compression and aluminumcylinder heads, one would have to possess a single-digit IQ to inducedetonation. To say that this wedge would make a great street enginewould be an understatement of epic proportions.
The former Holley Road runner...
The former Holley Road runner project spun the rollers of the Dynojet tothe tune of 436 horses at 5,500 rpm and 468 lb-ft of torque at 4,000 rpm(see dyno results chart) through an 18-spline Hemi four-speed and a3.54-geared Dana 60. This engine would undoubtedly make more power if ithad been equipped with a larger header, as the 17/8-inch units weredeemed too small for such an application. The Muscle CarRestorations-built Road runner is one of the cleanest cars the MoparMuscle staff has ever had the pleasure of laying our mitts on.
Indy's blower kit consists...
Indy's blower kit consists of a Blower Shop 8:71 supercharger, Indyblower manifold, drive pulleys, blower belt, carburetor plate, fuellines, linkage, and all necessary gaskets and fasteners. Carburetorchoice is made by the buyer.