| BY THE NUMBERS |
| ’70 PONTIAC FIREBIRD ESPRIT |
| Brett Evans • Glen Carbon, IL |
| Vehicle weight w/driver: 4,100 pounds |
| ENGINE |
| Type: | Pontiac displacing 541 cubic inches |
| (4.375 bore x 4.500 stroke) |
| Block: | 2007 cast-iron IA II AllPontiac.com |
| Compression ratio: | 10.5:1 |
| Oiling: | Canton 6-quart road race pan, Wix filter |
| Rotating assembly: | 4.50-inch stroke |
| AllPontiac.com 4340 crank, |
| 6.70-inch GRP aluminum rods, |
| Ross pistons, Total Seal ring packs |
| Cylinder heads: | Butler Performance/Edelbrock |
| Wide Ports, CNC-machined, |
| 370-cfm intake port, |
| 268-cfm exhaust port at .700-inch lift |
| Camshaft: | COMP solid roller |
| (270 degrees at .050; .735-inch lift) |
| Valvetrain: | 2.19/1.77-inch Ferrea |
| stainless steel valves, |
| 1.6:1 T&D shaft rocker arms, |
| Butler Performance pushrods, |
| COMP valvesprings, titanium retainers |
| Induction: | Edelbrock Victor Jr. intake, |
| Holley HP 1250 carburetor |
| Power adder: | NOS Fogger Pro Race, |
| Big-Shot plate |
| Ignition: | MSD Pro-Billet distributor, |
| digital programmable 7AL box, |
| 34 degrees timing |
| Exhaust: | Hooker Super Comp headers, |
| 2-inch primary pipes, |
| 3.5-inch collectors, |
| 3.5-inch full-length exhaust pipes, |
| Spin Tech mufflers |
| Fasteners: | ARP |
| Built by: | Butler Performance, Leoma, TN |
| DRIVETRAIN |
| Transmission: | Turbo 400, reverse shift pattern |
| manual valvebody, |
| TCI 10-inch torque converter, |
| 3,400-rpm stall speed, |
| B&M fluid cooler, TCI Outlaw shifter |
| Driveshaft: | Coan custom-built 3-inch |
| chrome-moly steel, |
| 4340 1350-series yokes, |
| Gear Vendors under/overdrive |
| Rear axle: | sheetmetal 9-inch housing, |
| 58 inches flange to flange, |
| Moser center section, |
| Detroit Locker limited-slip differential, |
| 3.50:1 ring-and-pinion, 35-spline axles, |
| 5/8-inch wheel studs |
| CHASSIS |
| Front suspension: | QA1 coilover 450-lb/in springs |
| and adjustable shock absorbers, |
| stock spindles, Global West tubular |
| upper and lower control arms, |
| Addco 1 1/4-inch antisway bar |
| Rear suspension: | CalTracs bars |
| and split monoleaf springs, |
| Afco front mounts and rear slider mounts, |
| custom-built Watt’s link, QA1 shock absorbers |
| Brakes: | Baer 13-inch disc, front; |
| 12-inch disc, rear |
| WHEELS & TIRES |
| Wheels: | Complete Custom Wheels (CCW), |
| 18x9.5, front; 18x12, rear |
| Tires: | Toyo RA1 275/35ZR18, front; |
| 335/30ZR18, rear |