I've been off the board for a little while but for good reason as I was busy tearing down the 383 in my Z. I installed the D1-sc I won off ebay a few weeks ago and did away with the P1 which is gonna go on the rock solid 355 in my sport coupe. For the 383, I did some more port work on the AFR 210's, brand new compcams valve train(bee-hive springs,chromoly pushrods and a serious set of roller rockers), a custom ground cam on a 116 lsa, .516/.534 and 224/236 dur @.050 . I wanted to utilize the D1 so i dropped in a set of custom forged Ross 7:5:1 pistons, added some bigger injectors on the stealth ram. The final touches came in the form of a Rick's hot rod shop stainless steel sumped tank with the A-1000 pump inside along with before and after fuel filters and finally a full reprogram of the system. Even though my girlfriend is not smiling about the bill i racked up, I had great satisfaction because on the engine dyno with 16.5psi of intercooloed boost and 32 deg. total timing I was rewarded with 721.3 import killing HP!!! and the best part is that i'm assuming at least 680 of that SHOULD make it to the rear wheels once the motor goes back in the car. My brother's gift to the project was a snow perf. methanol/water injection kit which will be here in a few days...get that hooked up and shoot for 20psi then prepare to smile or cry depending on how the motor takes it lol!! I will post an update when the meth/water kit is installed...can't wait for the weekend to go chug some beers and celebrate!!!

 

sounds like a MONSTER. BLOWN AND BUILT 383.

 

Nice numbers!

What AFR do you have under boost?

32deg at 16.5psi! thats alot, I'll do some tuning this weekend to see how far I can go at 10psi.....

 

full boost at 5850 rpm, the AFR was bouncing between 12:1 and 12:3 and i still think i want to see it a tad richer under boost though.