Does the Hard Block indeed shrink and seperare from the cylinder walls after a few heat cycles as posted earlier? The manufacturers I looked at claim it does not?????
Ya, they all claim there's doesn't shrink.
I'd like to see proof. My machinist claims they don't shrink. True on the oil cooler thing "it aint rocket science". Many tow packages include them - most police package cars have them. Don't know how well these factory engineered packages would work under our type of racing conditions though. Pressure drop is definitely a consideration. FWIW, oil pressure on fire up @ idle with my 408 = 70psi. At 180 oil temp @ idle = 35psi. At 220 oil temp = 25psi.(10W30 synthetic).
