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I'd say for only 8 PSI you're doing well on a 5.3. Other than not wanting to spin the driveshaft too fast, I would say there is power in spinning it higher. I can't imagine youre anywhere near max RPM of that 122. It's funny that your TQ peaks as late as it does for a blower that's not all that rev happy.
Where are your shifts set to in your tune? let that thing show you 6300 RPM. It's not done climbing at 6050.
That's what I told the guy it shifts at in 2-3 (6250)
1-2 is 6450
ive been wanting to pulley down but I worried of lifting a head (stock bolts) who knows I might throw it at it anyways 11-12 psi if I can get the right pulley (got any laying around?)
i was thrown off by the torque, I thought it would be higher
Stock head bolts should be the last thing you fear here.
I say you pulley down. Youre safe with more boost on the stock compression of a 5.3 even on pump gas. 10PSI revved to your shift point will make some nice power! I bet you'd be approaching 500 at the tires and your torque would only come in harder down low.
Stock head bolts should be the last thing you fear here.
I say you pulley down. Youre safe with more boost on the stock compression of a 5.3 even on pump gas. 10PSI revved to your shift point will make some nice power! I bet you'd be approaching 500 at the tires and your torque would only come in harder down low.
ya I don't recall my compression ratio anymore- since I've built it- milled the .032 and stock thickness gaskets...
you have any extra pulleys laying around for a mp?
I'm running the 3.1 now-
19-20psi holy crap - I thought anything higher that 15 your asking for problems (other than ring lands popping)
10-04-2017, 05:21 PM
Is this good or bad? 5.3 417whp/401tq
