Hey WATERBOY1976,
I detailed the engine bay on my 75 while I had the engine and tranny out. It is much easier that way and you can make it look really good once the motor is back in. I cleaned and degreased everything very good (Simple Green works good for this). You can wrap items that you don't want painted ( wiring harness, master cylinder, wiper motor, AC hoses, vacuum hoses etc) with Aluminum foil. It conforms to the items wrapped and stays put, plus it is easy to remove. I used gloss Black to do the frame rails, radiator support, A-arms, steering linkage and any metal bracketry. I used flat Black to do the firewall, cowl, inner fenders and underside of the hood. The flat Black on the fiberglass parts does not accentuate any imperfections the way that the gloss Black would. For the hood latches, support and hinges, I used Stainless steel paint. It is durable and provides a finish that looks like new metal.
Don't forget to wipe all of your rubber hoses down with laquer thinner. This cleans them very well. Armour All them once they are installed. Little details like replacing all of the factory stickers and adding new hose clamps will give the new engine bay finished look and does not add that much more cost to the job.
Once you get the engine back in, the car will look like a new one under the hood. Good luck and post pictures when you are finished.
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Take care and remember, "IWAVE2"
Jon
1975 CORVETTE (IWAVE2)
1971 CORVETTE (BLU BYU)
1982 COLLECTOR EDITION CORVETTE (COOL CE)