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Calling all LT1/LT4 guys. Just finished my Procharged LT4 build and I figured I would post of a thread to share Performance Numbers (Track/Dyno) for all the Supercharged guys. I found it hard to find examples of what gains to expect going into this build and I thought this would be a great way to share some milestones. I have yet to get any numbers for mine yet but soon.
1992 Fully Built LT4/LT1, 9:1 CR, 236/242 Cam, Vortech YSi with pulley sized for about 16pounds of boost @ 6200RPM.
Last dyno test gave 544RWHP / 565RWTQ @ 4800 RPM - it was running out of fuel so we shut it down. I installed a huge fuel pump and the next dyno is due in June. Expecting 650 at the wheels :-)
djxib is on the right track to make serious power.
I have an LT4, 2-bolt main, machined for splayed caps, 210 AFR eliminators, 383, 23x/24x cam with 113-114 LCA (engine was built by the previous owner), T-trim seeing 11-12psi, tune is not dialed in. Meth injected. "Feels like" 525-550rwhp. Will get her on the rollers soon.