Ive got an 89 IROC and I want to do the front brake hoses i haven’t pulled them yet but I understand theres 19in & a 21in size options. Does anybody know what size that year took?

 

There are 2 possible front calipers for that car that year. Which one do you have? Cast iron, or aluminum? There are around 1000 times as many Fe as Al, so the odds are pretty strong, but not 100% / 0% either.

 

Someone correct me if I'm wrong but I believe the 21 1/2" long brake hoses are for the aluminum PBR front calipers (1LE) and the 19" are for the Delco cast iron calipers, with OP's car being an 89 IROC-Z I would hope that it had the PBR's but it's certainly possible he's got the Delco's.
Fonso0812 you got a 1LE code on your RPO sticker? Could do a quick magnet check?

 

I used AC Delco 18J618 and 18J617 with my cast iron calipers. Both were 21 1/2". The length is good and they fit the first time with no leaks, I did grind down the edges of the end where the banjo bolt goes to get a very nice clean fit into the caliper area, maybe I had to because I got the wrong ones? It wasn't much, not really a big deal.

 

GM Shows Two Different Hoses For The Left And Right Brakes

 

Fonso, figure out which calipers you got?

 

-Hey guys thanks for the replies, Unfortunately I haven’t had a chance to look into it. I just thought Id ask out of the blue. Im thinking maybe they’re cast Iron but Ill have double check, At least now I know theres a difference! I appreciate all the help guys you’re the best!