No dog in the hunt, just passing this along for someone wanting to restore their 83-88 master cylinder with "NOS".
NOS S-10 "SR" code master cylinder for a very good price ($98.99 plus ship/tax). The good thing about these is they use the same step bore main body and guts as most 83-88 G-bodies without hydro-boost. Casting # on bottom is 18010023, just like the G-body ones. All you need to do is swap your angled reservoir onto the S-10 master body, bench bleed it and bolt it on. If your G-body requires GM p/n 18013429, this will do the trick once you swap reservoirs.
Here's a thread I did on side-by-side comparison.
NOS S-10 "SR" code master cylinder for a very good price ($98.99 plus ship/tax). The good thing about these is they use the same step bore main body and guts as most 83-88 G-bodies without hydro-boost. Casting # on bottom is 18010023, just like the G-body ones. All you need to do is swap your angled reservoir onto the S-10 master body, bench bleed it and bolt it on. If your G-body requires GM p/n 18013429, this will do the trick once you swap reservoirs.
AC Delco NOS Brake Master Cylinder W/Reservoir Part# 174-638 | eBay
<p>AC Delco NOS. New in original packaging. Brake master cylinder with reservoir. AC Delco # 174-638. GM# 18013433.</p>
www.ebay.com
Here's a thread I did on side-by-side comparison.
