LT1/LT4 Pro 1 Assembled

Name: LT1/LT4 Pro 1 Assembled
Brand: DART
SKU: 301-11111112L
Price: 1208.66 USD
Availability: OutOfStock

Currently Unavailable

This product is no longer available. Please call customer service for assistance at 1-800-345-4545.

LT1/LT4

Intake Ports: 180cc

Assembled
Intake Valve: 2.020''
Exhaust Valve: 1.600''
Dual Valve Springs: 1.437"
(130 lbs @ 1.80", .620" max lift)

Specifications:
Valvetrain: Standard SBC 3/8" stud mount or can be modified to 7/16"
Intake Port Location: Stock
Intake Port Dimensions: 1.190" x 2.075"
Intake Flow: 257 cfm @ .500" lift/28"
Exhaust Port Location: Stock
Exhaust Port Dimensions: 1.410" x 1.350"
Exhaust Flow: 172 cfm @ .500" lift/28"
Manifold: LT-style
Pushrod Length: Stock (should always measure)
Pushrod Guide Plate: Not used (uses stock-type self-aligning rockers)
Retainers: Steel 7°
Stud Girdle: Any standard girdle
Valve Length: 4.890"
Valve Stem Diameter: .3415", 11/32"
Valve Guides: .439" OD Mag-Bronze (.002" press)
Valve Guide Length: 2.100"
Valve Guide Clearance: .0014" to .002" (using Dart .3415" valve stem)
Valve Guide Spacing: Moved .030" from stock
Valve Seats: Hardened Ductile Iron, .006" press
Valve Seat Dimensions: Intake 2.160" x 1.810" x .350", Exhaust 1.650" x 1.350" x .350"
Valve Seat Angles: Intake 32°, 45°, 60°, 70°; Exhaust 37°, 45°, radius