Originally Posted by '88_SSE-BCKINBLK
Complinitor-You're running right in my target range (my goal is 14.50'*) Did you have to do anything with the tranny? You're N/A too, right? How about some flow bench data, oversized valves... worth the $$$ or not? Where can you get a custom PROM for these cars?
Welcome, AC/DC fan! I will be going to a mechanical shift kit from Thrasher http://www.thrashercharged.com/store_htm/store.shtm
in the spring. I have only tweaked my PCM for firmer shifts. The PCM in the 98'* are unable to accept chips, but if you have the proper computer equipment, you can do it. Check out Jet, Hypertech and Superchips for your 88. As for the flow data, I'd have to call the shop that did the work and get that. I do have the dyno numbers. These are at the wheels and are different than the GM listed specs which are at the crank (BIG DIFF)...
Stock - 197HP / 225FTlbs
After headwork & rockers - 220HP / 251FTlbs
After high flow cat, K&N, resonator removed - 231HP/ /256FTlbs
A lot of people worry about the HP-$$$ratio. If you are on a limited budget and not racing you B on a regular basis, the headwork is not for you.
Also, you'll get a better flow if you go to a more radical cam, but I didn't want to break into that system, so I went for the upsteam rockers. They do about 75% of what a new cam would, so I'm happy... for now.