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1975 Pontiac Trans Am - Here, Hemi, Hemi!
| By the Numbers | | | '75 Pontiac Trans Am | | | Chris Williams * Sleepy Hollow, IL | | | Vehicle weight w/driver: 3,823 pounds | | | Best ET: 11.52/117 * Total cost to build: $22,175 | | | Engine | | | Type: | Pontiac 400 displacing 460 cubic inches (4.150 bore x 4.250 stroke) | | Block: | 1972 vintage | | Compression ratio: | 10.33:1 | | Oiling: | Milodon 7-quart oil pan, crankshaft scraper | | Rotating assembly: | 4.250-inch stroke Ohio Crankshaft crank, Eagle BBC H-beam rods, Ross race flat-top pistons | | Cylinder heads: | Edelbrock Performer, 87cc combustion chambers | | Camshaft: | Bullet Racing Cams solid lifter flat tappet (256/258 deg. @ .050; .618 lift @ 6,000 rpm) | | Valvetrain: | 2.11/1.66-inch valves, 1.65:1 COMP roller rocker arms, COMP pushrods, Crane dual valve springs with dampers | | Induction: | Edelbrock Torker 2 intake, Holley HP950 carburetor | | Power adder: | None | | Ignition: | MSD Pro Billet distributor, 6AL box | | Exhaust: | Hedman headers, 1 7/8 primary pipes, 3.5-inch collectors, X-pipe, 3-inch Flowmaster mufflers | | Fasteners: | ARP 12-point throughout | | Built By: | Rick Sliwinsky, Precision Engine and Machine, Sleepy Hollow, IL | | Drivetrain | | | Transmission: | 1975 BOP Turbo 350 (built by Dean at DRC Racing Transmissions, Elk Grove Village, IL) | | Valve body: | manual | | Converter: | ATD 9-inch, 4,800 rpm stall speed | | Cooler: | B&M | | Shifter: | Hurst Quarter Stick | | Driveshaft: | Custom Strange Engineering chrome moly, 4340 1350-series yokes | | Rear axle: | Chevrolet 12-bolt housing, Eaton limited-slip differential, 4.33:1 ring-and-pinion | | Chassis | | | Front suspension: | factory spindles, Hotchkis 2-inch lowering springs, Energy Suspension bushings, Moog HD ball joints, Monroe shock absorbers (street), or Moroso (drag race), Hotchkis 1.375-inch antisway bar | | Rear suspension: | Hotchkis 1.5-inch drop leaf springs, Monroe/Moroso shock absorbers, Hotchkis 7/8-inch antisway bar | | Brakes: | stock disc, braided lines, front; stock drums, rear | | Wheels & Tires | | | Wheels: | Cragar race 15x8, front; 15x10, rear | | Tires: | BFG 215/65x15, front; M/T ET Street 28x12.50x15, rear |
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