Stock battery for a 90 camaro ??????
 

what is the stock battery for a 90 iroc v8?

i got a 600 cca in there now and it sometimes doesnt want to start the car....

also where can i get a stock holddown

Should be a group 75 series battery. Maybe charge the battery a bit? Has the car been sitting for a while?
GM hold downs are sold at any autoparts place.

Your starting issue could be something wrong with the battery, or if it only happens when the engine is warm it could be heatsoak - starter gets too hot from sitting next to your exhaust, and then doesn't wanna do any work until it's cooled off :)

- Justin