200R4 update
That's pretty horrendous mileage. I read the entire thread and didn't find what cam and specs you are running. Must have a crapload of overlap.
Thanks for the great post.
Here is what I have:
1992 magnum block
scat 4" stroke crank
Scat forged i-beam rods
Diamond flat top pistons (11.8:1 compression)
total seal rings
Engine Pro main, rod, Cam bearings
Fluid damper
cloyes double roller timing set
Cometic head gaskets
Edelbrock performer rpm heads (gasket matched w/ light porting)
Smith bros pushrods
Comp 1.5 ratio shaft mount billet roller rockers
comp hydraulic roller lifters
Comp Cam
242/248 Dur@ .050, .3660/.3630 lift @ .050, 112° lobe sep. 549/544 gross valve lift
Comp valve springs, retainers, keepers, locators
ARP head studs
ARP bolts used throughout
melling hv oil pump
Edelbrock RPM Air Gap intake
MSD Pro Billet distributor
bronze dist gear
Taylor wires and looms
New ngk plugs
Holley 750dp mech secondary manual choke
Mopar MSD 6 Ignition box
Blaster2 Coil
Adjustable rev limiter
It is a beast and it will never get good mileage. Original dyno was 498 peak hp and 528 ft/lb torque. I have done a little to it and figure it is low 500's now.