The Edelbrock #8558 bolt kit contain a complete set of the highest quality head bolts and hardened washers available. Cold-formed to ensure molecular integrity and heat treated prior to thread rolling and machining. Reduced diameter bolt heads eliminate the need for valve train removal to facilitate cylinder head re-torqueing. Hardened and parallel-ground washers are included. Rated at 170,000 p.s.i.
Specifications:
| Description_ABR |
HeadBlotKit |
| Description_ASM |
Oldsmobile:-:307 (5.0L)-403 (6.6L) |
| Description_ASM |
Oldsmobile:-:400 (6.6L)-455 (7.5L) |
| Description_DEF |
Engine Cylinder Head Bolt Set |
| Description_EXT |
Edelbrock #8558 is a Head Bolt Kit for 1965-76 Oldsmobile 400-425-455 Engines with 60529, 60515, 60519 Cylinder Heads. Complete set of Head Bolts & Washers for a pair of heads. |
| Description_INV |
Oldsmobile Head Bolt Kit |
| Description_MKT |
The Edelbrock #8558 bolt kit contain a complete set of the highest quality head bolts and hardened washers available. Cold-formed to ensure molecular integrity and heat treated prior to thread rolling and machining. Reduced diameter bolt heads eliminate the need for valve train removal to facilitate cylinder head re-torqueing. Hardened and parallel-ground washers are included. Rated at 170,000 p.s.i. |
| Description_LAB |
Oldsmobile Head Bolt Kit |
| Description_TRA |
The Edelbrock #8558 is made specifically for Oldsmobile V8 |
| Description_TRA |
Installation is the same as for original equipment cylinder heads. Consult service manual for specific procedures, if necessary. |
| Description_TRA |
Use Edelbrock head gasket #7340 or equivalent. Be sure that the surface of the block and the surface of the head has been thoroughly cleaned to remove any oily film before installation. |
| Description_TRA |
Use alcohol or lacquer thinner on a lint-free rag to clean. Coat threads, washers and underside of bolt heads with motor oil or special lube supplied with head bolt kit for accurate torque readings. |
| Description_TRA |
Torque 7/16" head bolts to 85 ft.-lbs. If using 1/2" head bolts (which require drilling out the bolt bosses in the heads), torque bolts to 90 ft.-lbs. Torque head bolts in three even increments |
| Description_TRA |
Start in the center and work out towards the ends. A re-torque is recommended after initial start-up and cool-down (allow 2-3 hours for adequate cooling). |
| Quantity |
Kit |
| Material |
Chromoly |
| Washers Included |
Yes |
| Length |
(16) 4.180 in, (4) 3.060 |
| Grade Type |
Performance |
| Finish |
Black Oxide |
| RGL |
WARNING: 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. |
| Thread Diameter |
0.4375 |
| Thread Type |
Coarse |
| Head Drive Type |
Hex |
| Length |
3.0000 |
| Width |
5.0000 |
| Height |
9.0000 |
| Weight |
4.0000 |
