Newcomer Racing 4.7 Stroker Turbo on the dyno in naturally aspirated form for break-in and dyno numbers. The 4.7 was broke-in and ran with a 390 Holley, then for the last two pulls we decided to try a 750 Holley to see if the 4.7 could take it and boy did it ever! The power numbers were up all the way through the power curve we ended up w/312.2hp@5400 and 330.5tq@4400. Dyno pulls were made from 2500rpm's thru 5500rpm's, it made over 300ft.lbs the entire rpm range. The current dyno numbers are made by a Jeep 4.7 stroker w/ 8.43:1 compression, ported head and intake, and a small custom turbo comp. cam, custom header w/3" collector. The current video is with the 750 Holley, enjoy! Visit WWW.NEWCOMERRACING.COM for more info.