Small Block Chevy bolt list
Item Description Size Qty 1. Intake Manifold 3/8-16 x 1" 12 2. Valve Covers (Pre 82) 1/2-20 x 3/4" 8 3. Oil Pan 1/4-20 x 1/2" 14 4. Oil Pan 5/16-18 x 3/4" 4 5. Flywheel flexplate 7/16-20 x 11/16" (3/4") ? 6. Timing Cover 1/4-20 x 1/2" 10 7. Torque Convertor 3/8-24 x 1/2" 3 8. Fuel pump 3/8-16 x 1 1/4" 2 9. Thermostat housing 3/8-16 x 1" 2 10. Carburator 5/16-18 x 1 1/2" 4 11. Water pump (have to measure them) 4
NOTE: There is no guarantee that the above list is correct.
Recommendations
I found that buying aftermarket rod bolts, head bolts and main journal bolts were cheaper than buying from GM. I recommend that for none critical bolts like the valve covers or intake manifold bolts, you can use Grade 5 bolts. I used grade 8 bolts cause they are very inexpensive at bolt supply houses - about 1/10 the price versus buying a generic bolt at your local hardware store.
Important
For the flywheel, flexplate, torque convertor, head, main journal and especially the rod bolts, use bolts specially made for this application! Do NOT use bolts purchased at bolt supply houses or hardware stores. For example: rod bolts are specially made to stretch a specific amount during tightening and to flex while under load. If you want to read more on fasteners used in the automotive industry, I highly recommend Carrol Smith's Nuts, Bolts, Fasteners and Plumbing Handbook. It'll scare the bejeepers out of you when you realize the misuse of fasteners! It's a must read if you are monkeying around with a car like I am doing.
