It is cost prohibitive from any view point that requires justification, using an economic model that includes profit. Jerrys Gaskets moved into the realm of parts that make no economic sense using the common yardsticks, Payout (PO), Rate of Return (ROR & IRR), Return on Investment (ROI), etc., a few years back.
For example, in order to attract a qualified injection molding company that could perform laser scan to CAD to CNC and produce very tight tolerance parts from high shrink material, we had to be willing to manufacture 2000 of each of the six different chain guide facings. We accomplished that to supply facings some of which were not available from any readily available source. Needless to say, my grand children will be passing inventory down to their kids.
If it weren't for the ZR-1 Net Registry allowing me to use the Forum, the support from both Registry members and Forum members, patronizing & referring Jerrys Gaskets, the availability of parts might be different today.
Due to that support, to date we have purchased tooling and manufactured;
20 different gaskets
Valve Spring Seats, 4140ht
Chain Guide Access Plugs
Cam Sprocket Bolts (reuseable ARP, special order)
MAP Sensor Hoses
Dipstick Tube Seals
Crankcase Ventilation PCV Hoses (L & R)
Chain Guide Facings (all 5 different)
Cam Cover R&R Plugs
Cam Cover Fresh Air Vent Hose
Vacuum Connector (unique to 1990 only)
Dual PCV Hose, Lower
Dual PCV Hose, Top Connector
Connecting Rod Bolts (ARP special order)
Silicone Coolant Hose Set (un-branded, black, red & blue)
Main Bearings, std & 0.0005" oversize, KING Alecular
RH Secondary Cam Chain Tensioner Housing (GM second design)
Silicone Air Duct (black, red & blue)
Fuel Injector Electrical Connector Seal
Idle Air Control Valve Motor
Fuel Pressure Regulator Vacuum Hose
Oil Pump Suction Seal (93~95 models)
Oil Cooler Hoses, (manufactured in-house using Edelbrock/Russell components)
and
LT5 ATI Damper, made available & in stock after it was discontinued
Valve Stem Seals, developed aftermarket source & stock
Valve Spring Retainer Key, developed aftermarket source & stock
PermaBond A136, made available & in stock after it was discontinued
Oil Pump Carbon Seal, OEM NOS, located & acquired manufacturer overrun
Seals (all) reverse engineered from engine dimensions & application verified
and
acquired several different inventories of LT5 parts which made them more readily available from a single, easily accessible source.
Still working on more LT5 projects
DIS Module
and other parts yet to come
All made possible by the support of the ZR-1 community.