Valvetrain

The valvetrain is an important part of any engine combination. Whether your engine is stock or full race, or anything in between, having a correctly matched, properly functioning valve train is of equal importance. If you are not sure which components are right for your engine, feel free to send us an e-mail or give us a call for a recommendation. Below you will find a variety of valves, springs, seals, and other timing components to put together a first class valvetrain.

Valve Sets
68-79
(specify year/ casting no.)		 OE Sizes
2.00” Hardened Intake
1.62” Stainless Exhaust
68-73
(250/ 950/ 902 Casting No’s, 76cc)		 2.19 intake
1.90 exhaust
68-73
(250/ 950/ 902 Casting No’s, 76cc)		 2.25 intake
1.90 exhaust
(racing)
74-79
(493/ 552 Casting No’s, 120cc 472 / 500 and 423 Castin No’s, 425 heads )		 2.11 intake
1.77 exhaust
74-79
(493/ 552 Casting No’s, 120cc 472 / 500 and 423 Castin No’s, 425 heads )		 2.19 intake
1.85 exhaust
Individual replacements available on request
Note: all valves are the correct length for the listed cylinder head applications
– no funny business with custom installed height or rocker setup required.

Swirl-polished oversize Stainless valves are available in full sets of (16) for all heads, 1968 through 1979. They are ready to install with 11/32” stems, and any competent machine shop in your area can machine the oversize seats. We do not recommend installing false hardened seats unless you are repairing a damaged head, nor do we recommend reusing stock valves. With the high nickel content of the Caddy heads, and stainless valves (which are very difficult to damage), you should be able to get many, many miles of trouble free operation from your upgraded heads, even on unleaded fuels.

Valve Spring Kits
Stage 1 OE size performance springs
Up to .550 lift.
Stage 2 Oversized high performance springs
Up to .600 lift.
Stage 3 Small diameter high performance springs
Up to .600 lift.
Stage 4 Oversized HD dual performance springs
Up to .720 lift.
Stage 5 Oversized extra HD dual performance springs
Up to .720 lift.
Stage 1 through Stage 3 include all shims, retainers, locks, and seals for installation with standard valve stem heights.

Valve Stem SealsValve Stem Seals

Fel-Pro™ Valve Stem Seals
w/ retainers for OE springs
Viton Umbrella Valve Stem Seals
Ultra High Temp
Silicone Poly Lock Valve Stem Seal
High temp, requires machined guides
Teflon Poly Lock Valve Stem Seals
Ultra High temp, requires machined guides

Cloyes Timing Set

Cloyes True-Roller Timing Set
Includes chain, cam gear, and crank gear with three keyways. Made in USA
Cloyes Street-Roller Timing Set
OE Spec Timing Set
with all-steel gears
ARP™ Timing Gear Bolts
Correct size, 1 pr Made in USA
Bronze Distributor Gears
Isky Rev Lube valve train assembly lube
Brad Penn Engine Oil By the Qt or By the Case $call
High ZDDP Content For Maximum Cam Life

New Replacement Timing Covers

425 and 500 Stainless Steel Timing CoversBack Side of Stainless Timing Cover

These high quality covers are stamped from a sheet of steel, with integrated lip to support the crank seal and welded oil pan seal lip, to fit and work like the originals.

472/500 Timing Cover VT11011

These stainless steel covers are the same as above, but with superior looks and longer life.

472/500 Timing Cover VT11021

425/368 Timing Cover VT11022