The cam is fine for a mid range TQ monster, could even drop it a bit in duration, but it ought peak near 6000. I personally would have run the 7118 crank, those sexy azz L88 rods with the boron bolts ( I swapped to ARP) flycut the domes off those heavy TRWs to get 10:1 and run a nice split duration solid cam to rpm the thing. But who wants a 427!
Windage is as important for a 7000 rpm 3.76" stroke, as it is at 4000 rpm, for a 4.25" stroke, so pay close attention to windage control with those big throws. It'll rob GOBS of power at rpm.
Not for nothing, but the old Chevelle ran [email protected]
118.75 with the old L88 done up that way. 12.24 as it's a clutch car with no gear ( 3.31). Ultradyne SFT 243/[email protected]
.050, 153/[email protected]
", .600" 110 LSA, 074s, 163 mani with Holley 850 atop. Monster power in a 427! Garage built to boot.. and had the choppy L88 idle.
The Strip Dominator dont dominate a friggin' thing. I reckon even an oem 163 would be better. And look all OEM and such to boot! Again, the cam is good for a mid range 481. Heads are a might big for that, but they are good small rectal heads. ALSO, I found mine moved lash 6 thou from cold/hot. Dont assume . Check it.
PS, if you havent replaced the factory rocker studs on those 074s, you need to run extended length ARP studs. Else you may blow a whole exhaust rocker boss off the head if you accidentally float the valves at 7500 rpm. Also, you'll need really, really good headers bolts/locks, as those old alum heads grow/shrink due to thermal like you cannot believe. Mine used to "spit" headers bolts out on the highway. BTDT!
I have ONE #6768 GM head gasket left, which were specifically designed to put their alloy L88 heads on iron blocks. All I ever used. You will need to retorque with those heads.