Features

• Premium iron alloy
• Clearance for 3.750 in. stroke crank with steel rods
• Standard Small Block Chevy cam location and diameter
• Standard OEM fuel pump boss
• Standard OEM starter location
• Standard OEM motor mount location
• Standard 1980-1985 oil pan style for 2-piece rear main with the passenger side dipstick
• Priority main oiling system
• Wet or dry sump compatible
• Compatible with a standard mechanical clutch linkage
• Center mains us 7/16 in.-14 bolts
• Outer mains us 3/8 in.-16 bolts

Notes

• Due to the differences in lifter styles, lifter oil bands must be checked at the camshafts full lift for ensuring proper valvetrain lubrication
• Proper assembly requires the installer to measure all tolerances for correct clearances 
• Main bores will be undersized and require an align hone for proper crankshaft clearance
• Requires cam bearings with same cam 2 in. housing bore on all five journals (same as GM Bowtie block)
• Requires a +0.300 in. tall lifter

Torque Specs: All torque specs are based on the use of light motor oil

• Outside Main: 35 ft.-lbs 
• Inside Main: 75 ft.-lbs 
• Front and Rear Main: 75 ft.-lbs