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 15W-40...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 15W-40 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 15W-40...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 15W-40 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.