Maximum RPM from a 08 5.3 liter
04-15-2011, 02:25 PM
#1
Maximum RPM from a 08 5.3 liter I have a 2008 model 5.3 from the junkyard i paid 400$ for, it runs hard on the big end with a patriot cam(225/229@.050,582/589 lift,114LSA), i put fresh 317s on it as it will be getting the turbo treatment in the future, but right now all motor,m i spin 7000, it does make power till 4250 and start pulling, but i shift at 7000 not feeling the car nose over, how much can the GEN IVs take for RPM? I have seen the older GEN III take a **** above 7000, then you have guys like me spinning my stock long block 2001 6.0 to 7200 all day.
I think 7500 is where ti wants to go, but dont want to destroy the perfectly good low mile short block and possible **** up the fresh heads, i am using comp 918s as well, so i am wondering what you guys think it will handle, bastard sounds great at 7000 and i will at least wind it to 7200 the next time i up the rev limiter, but it just really feels it needs more.
I think 7500 is where ti wants to go, but dont want to destroy the perfectly good low mile short block and possible **** up the fresh heads, i am using comp 918s as well, so i am wondering what you guys think it will handle, bastard sounds great at 7000 and i will at least wind it to 7200 the next time i up the rev limiter, but it just really feels it needs more.
04-15-2011, 10:52 PM
#2
Once you pass 7K on hydraulic lifters you tread into the darkness and take your chances. Gen4 bottom ends are a good step better than gen3 bottom ends so worry not there. They have better rods and bolts and windage. Why dont you try 7500 and report how it goes?
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04-19-2011, 01:04 AM
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