The Edelbrock 85912 is an E-Series cylinder head bolt kit for Big-Block Chrysler B and RB engines (383, 400, 413, 426 and 440) equipped with Edelbrock E-Street and Performer RPM cylinder heads 60825, 60829, 60929, 60185, 60189, 5090 and 5093. It contains all bolts and washers needed to install one set of heads. The kit has twenty-four 1.75 in and ten 4.00 in bolts, all 7/16 in coarse thread chromoly. E-Series bolts have a 190,000 PSI yield tensile strength, threads rolled after heat treating, a small hex head for socket clearance, a black oxide finish with sealer and an E stamped on the head.
Notes:
- Bolts and washers to install one set of heads.
- Torque to 70 ft-lbs in three steps (40, 55, 70) following the factory sequence.
Specifications:
- Brand: Edelbrock
- Part Number: 85912
- Part Type: Engine Cylinder Head Bolt Set
- Thread Type: Coarse
- Thread Diameter: 0.4375 in
- Minimum Length: 1.75 in
- Finish: Black Oxide
- Length: (24) 1.75 in, (10) 4.00 in
- Material: Chromoly
- Sold as: Kit
- Manufacturer warranty: 12 months
Engine Applications
- Chrysler Big-Block B-Series: 383 (6.3L), 400 (6.6L)
- Chrysler Big-Block RB-Series: 413 (6.8L), 426 (7.0L), 440 (7.2L)
FAQ
What engines does the Edelbrock 85912 fit?
Big-Block Chrysler B and RB engines (383, 400, 413, 426 and 440) with Edelbrock E-Street or Performer RPM heads 60825, 60829, 60929, 60185, 60189, 5090 or 5093.
What is included in the 85912 kit?
Bolts and washers to install one set of heads: twenty-four 1.75 in and ten 4.00 in bolts, all 7/16 in diameter.
What torque is used with the 85912 bolts?
70 ft-lbs in three steps (40, 55, 70) following the factory sequence.
What material and finish are the 85912 bolts?
Chromoly steel with a black oxide finish and sealer, rated at 190,000 PSI yield tensile strength.
California Proposition 65: This product can expose you to Chromium, which is known to the State of California to cause cancer or birth defects or other reproductive harm. For more information, visit www.P65warnings.ca.gov.

