Yes, another question from me (sorry)...I have owned my 1979 Coupe de Ville a very long time. For much of that time, it has been powered by a stroker engine. It was bought used, so the internals are somewhat of a mystery. Here is what I know of the internals:
472 block from 1973 Fleetwood, .030" over (4.33" bore)
500 crank from 1971 Eldorado, offset-ground to 4.6" stroke (Engine is 542ci)
Main-bearing studs and slight clearancing on the bottom of the bores, otherwise stock block.
1971 closed-chamber heads, ported, stainless exhaust valves, probably from the same 500 as the crank
Double-roller timing chain
Hi-volume oil pump
Dished pistons, compression between 8.5 and 9:1; I was told they were Federal-Mogul cast hypereutectic, with press-fit pins & moly rings
Standard oil pump (no HV available at the time)
Redline 5200, trans shifts at 5100
Hot runner, between 200 & 225 degree coolant most of the time.
Here is what I DON'T know, but think is correct:
Crank was offset ground, using what look like either BB Chevy or BB Olds rods...either way, they are H-beams with capscrews
Hydraulic cam I think is a Crane, specs unknown, but has a glass-smooth 600RPM idle and plenty of vacuum. (Of course, 542ci will cover up a lot of cam.)
Single-wound valvesprings with dampers, pressures unknown
Some aftermarket rockers, looks like Larry Kruzik's modified Ford 460 setup. (Stock Cad rockers tend to break above 4500RPM.) Nonadjustable, look like custom pushrods.
I bought the hype and ran 15W-50 synthetic oil (Syntec or M1) for quite a while...maybe 25,000 miles ago, I switched to diesel-rated 15w40...I had a bunch of old high-ZDDP oil, but the last of it went in last summer. Caddys have large bearings with high bearing speeds, and a somewhat marginal oiling system. With a 4.6" stroke, I suspect mine also has some scary piston speeds.
So...the 15w40 seems to be working fine. Any suggestions what to run? (And anyone that cares to scare me with piston speeds at 5000RPM, that would be OK.
)
472 block from 1973 Fleetwood, .030" over (4.33" bore)
500 crank from 1971 Eldorado, offset-ground to 4.6" stroke (Engine is 542ci)
Main-bearing studs and slight clearancing on the bottom of the bores, otherwise stock block.
1971 closed-chamber heads, ported, stainless exhaust valves, probably from the same 500 as the crank
Double-roller timing chain
Hi-volume oil pump
Dished pistons, compression between 8.5 and 9:1; I was told they were Federal-Mogul cast hypereutectic, with press-fit pins & moly rings
Standard oil pump (no HV available at the time)
Redline 5200, trans shifts at 5100
Hot runner, between 200 & 225 degree coolant most of the time.
Here is what I DON'T know, but think is correct:
Crank was offset ground, using what look like either BB Chevy or BB Olds rods...either way, they are H-beams with capscrews
Hydraulic cam I think is a Crane, specs unknown, but has a glass-smooth 600RPM idle and plenty of vacuum. (Of course, 542ci will cover up a lot of cam.)
Single-wound valvesprings with dampers, pressures unknown
Some aftermarket rockers, looks like Larry Kruzik's modified Ford 460 setup. (Stock Cad rockers tend to break above 4500RPM.) Nonadjustable, look like custom pushrods.
I bought the hype and ran 15W-50 synthetic oil (Syntec or M1) for quite a while...maybe 25,000 miles ago, I switched to diesel-rated 15w40...I had a bunch of old high-ZDDP oil, but the last of it went in last summer. Caddys have large bearings with high bearing speeds, and a somewhat marginal oiling system. With a 4.6" stroke, I suspect mine also has some scary piston speeds.
So...the 15w40 seems to be working fine. Any suggestions what to run? (And anyone that cares to scare me with piston speeds at 5000RPM, that would be OK.