Should I use a gasket or RTV for the timing cover and oil pan?
Documented on the Chevrolet Small Block 350 (sbc 350) build
Published May 9, 2026
Both methods are common.
Full Answer
Both methods are common. Use the gasket type recommended by the part manufacturer; RTV can be used where gaskets are not available or in addition to gaskets at corners and seams. If using RTV, follow cure times before running the engine.
Documented In This Build
Related Knowledge
What torque specs should I use for oil pump, timing cover and oil pan bolts?How do I know the oil pump pickup is positioned correctly?What do I do if I see RTV squeeze-out into oil passages?Do I need to prime the oil pump before first start?How important is degreeing the cam?What torque sequence and values should I use for SBC heads?How do I set lifter preload or hydraulic lash?What should I do to prepare the engine for first start and break-in?
Related Parts
RTV silicone/sealant
$8
Oil pump (single or gear-type for SBC 350)
$120
Oil pump pickup tube
$30
Timing cover
$70
Front crank seal (timing cover seal)
$12
Oil pan
$130
Timing cover & oil pan gaskets / gasket set
$25
Oil pan bolts / hardware
$10
Related Tools
Torque wrench
Ratchet and socket set
Seal installer / seal driver
Gasket scraper / cleaning tools
Caulking gun
Shop rags and solvent
Related Videos
Small Block Chevy 350 Build Pt. 6 | This Is How It's Actually Supposed To Be Done
Small Block Chevy 350 Build Pt.3 | Filing rings and checking main clearances
Small Block Chevy 350 Build Pt.5 | Continued frustrations with rod clearances
Small Block Chevy 350 Build Pt. 11 | Installing the intake manifold and figuring out sbc nuisances
Small Block Chevy 350 Build Pt. 7 | Checking Crank Clearance and installing the rods.
Small Block Chevy 350 Build Pt. 8 | Installing Camshaft and timing components