have some questions on turbo build on what parts
02-01-2009, 11:02 AM
#1
have some questions on turbo build on what parts Im doing a 5.3 turbo build and im new to the forced induction part of it. Iv been searching like crazy but can only find so much on the 5.3 motor. My set up will be stock long block and while the motor is out of the car im gonna put new seals on the motor, arp rod bolts and new head gaskets since these have 80k on them. Get a turbo cam for it, valvetrain, EWP etc. Would it be a good idea to stud the heads and the mains? Im assuming to run around 16lbs of boost (from what iv seen other people running on stock long block 5.3s) and what size injectors? Seems like 40lbers is what some are using, i got a PM about some 42lb and 44lb injectors i can buy. I have a ls5 intake on its way and using the stock 5.3 TB. Give me some of sugustions on how you guys with smoe time under your belt would do this. Im still on kinda a budget thats why its staying a stock long block for now so keep it easy on me.
02-01-2009, 11:11 AM
#2
ARP rod bolts, dont touch the heads or head bolts. Do a cam, springs and 65# injectors. The 42# stuff isnt even worth your time. Your gonna need race gas or methanol to run over 12psi. You find a turbo yet? GT42 is a really good setup on there, the T70 is good too but kinda small. TC76 would be another good buy
Gary
Gary
02-02-2009, 10:40 AM
#6
Its pretty hard to beat the factory seal on these motors. If your running a stock longblock there is no reason to pull the heads, that will just waste some $$. If your going over 600whp you are gonna need dual walbros as well. The tc76 is awesome on a 5.3, did you pick out a cam yet?
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02-02-2009, 03:33 PM
#8
Its pretty hard to beat the factory seal on these motors. If your running a stock longblock there is no reason to pull the heads, that will just waste some $$. If your going over 600whp you are gonna need dual walbros as well. The tc76 is awesome on a 5.3, did you pick out a cam yet?
I did not start on the cam search yet. What you thinking?I plan on getting the Patriot gold kit and new seals, pushrods and roller rockers. So a whole new valvetrain.
02-02-2009, 06:16 PM
#9
I ran a 224/224-112 on my boosted 6.0, it lacked a little in spoolup but i had a big turbo. Over 4500 though, that thing ripped. How big of a cam do you want?? IMHO, the comp 212/218 is the best turbo cam you can get for that motor. I had one in a 4.8 N/A and it was awesome. Biggest i would go is a 220 or 224 sized cam. ZO6 is a good one also, but the comp 212/218 will make alot more power for similar price. Look for a used one.
The patriot kit will work very well, and with the rod bolts you will be able to reliable go to around 6800, also perfect for that cam.
Tuning software?? go right for the 2-bar SD setup in HPT or EFILive.
The patriot kit will work very well, and with the rod bolts you will be able to reliable go to around 6800, also perfect for that cam.
Tuning software?? go right for the 2-bar SD setup in HPT or EFILive.
02-02-2009, 06:48 PM
#11
If you have a 3-bar sensor then sure! You will have a major problem maxxing out the 2-bar though, so if it costs more i would just stick with 2, better resolution in the VE tables. Either way you will be all right. You do realize that 16psi on that motor will be a solid 650-ish whp right? And in your tin can with a good launch will be way down in the 9s!
What are you looking at for a hotside? Im guessing a truck mani set up with turbo in the front. You have a wastegate and stuff yet? JGS 50mm gate and 56mm BOV are the ticket.
What are you looking at for a hotside? Im guessing a truck mani set up with turbo in the front. You have a wastegate and stuff yet? JGS 50mm gate and 56mm BOV are the ticket.
02-03-2009, 07:56 AM
#13
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The turbo is going to hate the 4:11's. Swap down to a 3:42 or a 3:23/3:25's would be better. turbo's work on "load" not necisarily air flow. Taller gears will keep the turbo loaded and making max boost. You will find that your converter will probably flash to 4500 with the extra torque that the turbo setup will produce. 
I vote for 72# inj with 42psi (fuel pressure) w/a TC76. We run a MPT70 on a 5.3 w/a 04 ZO6 cam/springs and 72# inj. w/meth. Plenty of room to move/grow. Oh and double walbro 255's. 2 bar map will do all you need until you go to a forged rotating asm.
I vote for 72# inj with 42psi (fuel pressure) w/a TC76. We run a MPT70 on a 5.3 w/a 04 ZO6 cam/springs and 72# inj. w/meth. Plenty of room to move/grow. Oh and double walbro 255's. 2 bar map will do all you need until you go to a forged rotating asm.
02-03-2009, 04:17 PM
#14
well i got 60 pound motron injectors on there way. Im sure thell be more then enough to get the car running damn good. I know there gonna hate the gears and converter but it was all set up to run on my lt1 motor and now i changed the build. I was thinking about 3.73's with a 28'' tire and around a 3k converter? The trans has a RMVB w/ break fyi, dont know if that will change converter choice. And ill go with the 2bar map. Anything else?
02-04-2009, 07:25 PM
#17
now about the cam. I got 1.8 harlen sharp rockers, how would that work with a zo6 cam? What would that make the specs on that cam be? Or the 212/218 cam? and whats a good lsa for boosted cars?
Last edited by Taubr Unit; 02-04-2009 at 07:48 PM.
02-04-2009, 08:40 PM
#19
The TC67 making 700rwhp is pushing it. The TC76 on the dyno we see little difference from the 67, 70 and the 76 and 78 as far as spool up. Run the 76 or 78, at lower more efficient boost level. Your headgaskets will thank you...