1988 B2K 064 coming back to life

Discussion of Corvette based Callaway Cars including: 1987-1991 RPO B2K Callaway Twin Turbo Corvettes (C4); Callaway SuperNatural Corvettes (CL-1/CR-1); Callaway C12; Supercharged Corvettes; Callaway C16; 6th Generation Callaway Corvettes (SC560, SC580, SC606, SC616, SC620, SC652); 7th Generation Callaway Corvettes (SC627/SC757); NEW Callaway C8 Corvettes - and more!
Sponsored by: Callaway Cars
User avatar
CalJim
Posts: 757
Joined: Thu Aug 28, 2008 7:34 am
Location: McKinney, TX

Re: 1988 B2K 064 coming back to life

Post by CalJim »

Very nice!
User avatar
1988Callaway#16
Posts: 41
Joined: Mon Jan 01, 2018 10:50 pm
Location: Bellevue NE

Re: 1988 B2K 064 coming back to life

Post by 1988Callaway#16 »

Looks great! Did you buy your car with it set up for the hardtop or did you convert it with 89+ parts? Thanks! Kevin
sjandras
Posts: 14
Joined: Mon May 17, 2021 10:01 pm

Re: 1988 B2K 064 coming back to life

Post by sjandras »

I updated the windshield header brackets with some NOS 89+ parts that I came across and I'm still shopping for the
B-pillar mount brackets. Haven't driven it yet with the top on because of that, can't wait to feel the difference.
sjandras
Posts: 14
Joined: Mon May 17, 2021 10:01 pm

Re: 1988 B2K 064 coming back to life

Post by sjandras »

I've searched all the archives and can't find a consistent answer to this one: what should fuel pressure be at WOT full boost? My car feels very strong, but has a bit of a flat or rough feeling at > 4krpm. I installed a fuel pressure gauge that I can kind of see while driving and see around 36 psi in this condition. It seems constant across RPM range, not dropping. The picture below doesn't show the fuel pressure we'll, but shows it is making boost.
Screenshot_20211017-080500_Gallery.jpg
User avatar
SurfnSun
Posts: 2171
Joined: Wed Aug 27, 2008 9:44 pm
Location: On the move...
Contact:

Re: 1988 B2K 064 coming back to life

Post by SurfnSun »

Is it by chance that your clutch is slipping? The best way to tell if your fuel pressure is correct is to put it on the Dyno with a wide band.
sjandras
Posts: 14
Joined: Mon May 17, 2021 10:01 pm

Re: 1988 B2K 064 coming back to life

Post by sjandras »

Now that you mention it, yes the clutch slipping is a strong possibility. My mind hadn't gone there yet but that is kind of what it feels like. I was more focused on trying to confirm it wasn't going lean. Also agreed a wide band O2 would also help. If it's the clutch, I'll find that out when I do the trans pull for the overdrive rebuild.
sjandras
Posts: 14
Joined: Mon May 17, 2021 10:01 pm

Re: 1988 B2K 064 coming back to life

Post by sjandras »

The transmission pull project has begun! I was really concerned about getting the exhaust out, it's one of my least favorite jobs on any car project. Amazingly, this one came out with zero issues! Low mile Texas cars are the best! All the fasteners came loose with no drama and even the slip joint on the catalyst section slid right out. It was obvious nobody has been in here since it left Old Lyme, extremely happy it's off.

Now I need to think about whether I'll put it back stock or not? Has anybody done a cat delete lately? I assume full custom is the only option?
Attachments
20211030_160508.jpg
20211030_160458.jpg
User avatar
SurfnSun
Posts: 2171
Joined: Wed Aug 27, 2008 9:44 pm
Location: On the move...
Contact:

Re: 1988 B2K 064 coming back to life

Post by SurfnSun »

I would either eliminate the cats or go 3" bullets with metallic substrate. There's a ton of power and spool to be had by going large custom exhaust
Post Reply