difference on a 2.75 and 2.9 pulley
11-27-2006, 07:01 PM
#1
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difference on a 2.75 and 2.9 pulley
what are the difference on these 2 pulleys currently have the 3.1pulley. and also where can i get 60lb injectors currently have 42lb
11-27-2006, 07:10 PM
#3
Nelson Performance has the Siemens 60#'ers and a truck conversion kit, and New Era Performance has them too for a little cheaper, but I don't think they offer a conversion kit.
The 2.8" pulley is good for about 9 psi on a 6.0L, and I think it's good for 12-13 psi on a 5.3. Don't quote me on that though.
The 2.8" pulley is good for about 9 psi on a 6.0L, and I think it's good for 12-13 psi on a 5.3. Don't quote me on that though.
11-27-2006, 07:17 PM
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well i had the 2.75 pulley which with meth my boost gauge read 12psi and now have the 3.1pulley and it reads 8.5-9psi on a 5.3 just wanna stay within 10psi. and injectors i have 42lb marine injectors which im at 100% duty cycle so im looking to get larger ones what do u guys recommend, i was leaning towards 50 or 60 pounders what do u think
11-27-2006, 07:23 PM
#5
I'm going to be going to Siemens 60#'ers here shortly, have to change the injector connectors on the truck harness to accept LS1-style injectors, but supposedly the Siemens are not too difficult to tune for. They are still high impedance so they will work with the stock PCM.
You're probably looking at $420 to 470 for a set depending on where you buy them, and factor in the cost (about $35) for a conversion kit. Probably money well-spent, especially if you are planning more mods in the future. Might want to do some searching to see how much more your fuel system will support too.
From what I have found researching it, the 60# injectors are good for 800-850 rwhp with FI with a good fuel system.
You're probably looking at $420 to 470 for a set depending on where you buy them, and factor in the cost (about $35) for a conversion kit. Probably money well-spent, especially if you are planning more mods in the future. Might want to do some searching to see how much more your fuel system will support too.
From what I have found researching it, the 60# injectors are good for 800-850 rwhp with FI with a good fuel system.
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11-27-2006, 07:50 PM
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so like me i ran the 2.75 pulley with 12psi with meth and 42pounders with 100% duty cycle is this still good. i know i'll be needing larger injectors but is this still good for now