I went with the 9.5 aluminator a long time ago, as it was the only one that offered the OPG and also Boss valve springs at the time. A very notable racer that makes my turbo kit suggested to go 9.5 and just add more boost. All in all I am happy, as I have made 2 very horrible mistakes that would have immediately scattered most engines. Too embarrassed to mention them here. Ok, don't know how to upload dyno sheet but here are the specifics. Friday, 3400 DA, Boost (a lot), 1060hp/980tq @ 5500. Ran out of pump twin 465 Fore, injector ID1000 or valve spring, or all of the above. Dyno and logs went crappy from 5500 to 6500. So there it is, think I found the limit for my combo. Think I'm just gonna back off the power and work on suspension! Oh, STD also. Didn't look at SAE numbers. Maybe it would have added some more since there was a strong Low Pressure system above us that day!
Last edited: