5.3 turbo questions?!?
5.3 turbo questions?!? ok so, ive been entertaining the idea of going turbo for a couple weeks now.
before, i was dead set on a h/c/i setup on a lq4/9 so havent done much research on turbo setups yet.
i found this ebay hotside for camaro/firebird
http://www.ebay.com/itm/GSP-97-02-ls...a34446&vxp=mtr
what do yall think?
i know ill have to relocate the alternator to the top.
thats no big deal seeing as im getting a 80k mile 07 5.3 for $250 from a friend.
is there anything else ill have to relocate/delete?
my plan is going with 42lb injectors and staying on 93 octane. atleast for now. im not searching for crazy power right now as this will still be my daily.
my goal is 8ish psi and making around 480whp which is very well in reason from what ive read.
heads will be stock 317's
trans will be my current builtish 4l60e with a fti 4000 stall till it takes a dump. then ill go to a 4l80.
turbo will be a gt45.
theres another thread on here of a guy with a similar setup.
stock 5.3 with 36lb injectors 6psi making 490whp
turbo making max psi by 3600rpms.
what else am i missing?
i know ill need to upgrade my fuel pump, thatll probably happen before i even start the turbo build since i think its on the way out now.
thanks!
before, i was dead set on a h/c/i setup on a lq4/9 so havent done much research on turbo setups yet.
i found this ebay hotside for camaro/firebird
http://www.ebay.com/itm/GSP-97-02-ls...a34446&vxp=mtr
what do yall think?
i know ill have to relocate the alternator to the top.
thats no big deal seeing as im getting a 80k mile 07 5.3 for $250 from a friend.
is there anything else ill have to relocate/delete?
my plan is going with 42lb injectors and staying on 93 octane. atleast for now. im not searching for crazy power right now as this will still be my daily.
my goal is 8ish psi and making around 480whp which is very well in reason from what ive read.
heads will be stock 317's
trans will be my current builtish 4l60e with a fti 4000 stall till it takes a dump. then ill go to a 4l80.
turbo will be a gt45.
theres another thread on here of a guy with a similar setup.
stock 5.3 with 36lb injectors 6psi making 490whp
turbo making max psi by 3600rpms.
what else am i missing?
i know ill need to upgrade my fuel pump, thatll probably happen before i even start the turbo build since i think its on the way out now.
thanks!
is there any problems with that turbo kit?
i also found this one that im leaning more towards since it includes basically EVERYTHING
http://www.ebay.com/itm/1998-2002-CH...98dea3&vxp=mtr
i also found this one that im leaning more towards since it includes basically EVERYTHING
http://www.ebay.com/itm/1998-2002-CH...98dea3&vxp=mtr
Dont put 317s on ... leave stock ones. You'll make it a slug and hate it and gain nothing by doing so.
I also agree on get 60# injectors... or even 80's they are not much more....in the event that maybe you wanted to try E85 in the future.
I also agree on get 60# injectors... or even 80's they are not much more....in the event that maybe you wanted to try E85 in the future.
i thought that 317 were what everyone used?
or is that just on the 6.0's?
i do plan on e85 in the future. but itll be a while.
since itll be my daily i want to run premium for mpg reasons.
TECH Regular
Joined: Nov 2007
Posts: 485
Likes: 1
As far as those kits you linked to, I don't really like either one. I'd much rather make my own and do it exactly how I want. If you're dead set on an eBay kit though, definitely the first one. The turbo in the second kit is worthlessly small.
Last edited by jridenour31; Nov 17, 2012 at 06:24 PM.
Lower compression will only slow your spool time down, and make it feel like you are driving a 4cyl off of boost.
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TECH Regular
Joined: Feb 2010
Posts: 433
Likes: 0
From: Louisville
Go 80's if ur even thinking about going to e85 and might as well do good fuel pump or pumps and lines..stick with stock heads if u want lower compression get a set of 243's
317 will drop way to much compression and it's not needed for ur boost and power levels
317 will drop way to much compression and it's not needed for ur boost and power levels
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Verdad Gallardo as for pump, the 2nd kit i posted includes a pump. but from the research ive been doing, the cheap 38mm BOV suck, and the wastegates are horrible. so ill probably go with the first kit i posted, and pick up all the other stuff i need thats a little higher quality.
On The Tree
Joined: Nov 2006
Posts: 156
Likes: 0
From: Cincinnati OH
Everything I have heard about ebay kits isn't exactly good. Just that they have a lot of issues that need to be addressed for them to function well. There was a guy on here that had an ebay twin kit, he ended up having to fix alot of issues.
Most of the ebay turbos aren't built of sized well. People have good luck with the gt45, I have heard mixed results from the rest of them.
Most of the ebay turbos aren't built of sized well. People have good luck with the gt45, I have heard mixed results from the rest of them.
TECH Regular
Joined: Feb 2010
Posts: 433
Likes: 0
From: Louisville
If u can find a used modular hot side or Huron and just put gt45 on it and a cx racing intercooler..I would get a decent wastegate and bov also..just make sure fuel pump is good last thing u want is not fuel on a boosted motor
im thinking of either a gt45 turbo, or the on3 76mm
im trying to stay under $2k on the turbo build. ill still have to mess with the trans, and rear.
so the cheaper the kit the better.
ive done research on that particular kit, and people have had pretty good luck with them, minus the turbo and BOV.
im trying to stay under $2k on the turbo build. ill still have to mess with the trans, and rear.
so the cheaper the kit the better.
ive done research on that particular kit, and people have had pretty good luck with them, minus the turbo and BOV.
TECH Regular
iTrader: (1)
Joined: Aug 2007
Posts: 480
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From: Lake Jackson TX, south of Houston
I got that ebay kit but just the hot side. It needed alot of modding to make even fit. So if you dont have a tig don't wast the money. Spend good money on a good wastgate. I plan on redoing it w truck manifolds.
98 firebird 5.3l 4l60e. I had to cut the v band off the pass side weld it to another pipe to extend it down. The flange was hitting the tranny right at the starter. The pass side o2 doesn't clear so cap and weld a new one in. Pain in the *** to get the oil return in a good location, wasted a good oil pan. Header tubes are crap on the inside. Had to elongate some holes on the header flanges. and I think the turbo sits a little to low for proper oil return. Altinator will need to be relocated to the top pass head area. Turbo is almost toutching the rad. I went solid motor mounts on a sphone k-member.
98 firebird 5.3l 4l60e. I had to cut the v band off the pass side weld it to another pipe to extend it down. The flange was hitting the tranny right at the starter. The pass side o2 doesn't clear so cap and weld a new one in. Pain in the *** to get the oil return in a good location, wasted a good oil pan. Header tubes are crap on the inside. Had to elongate some holes on the header flanges. and I think the turbo sits a little to low for proper oil return. Altinator will need to be relocated to the top pass head area. Turbo is almost toutching the rad. I went solid motor mounts on a sphone k-member.
Last edited by socal; Nov 19, 2012 at 12:20 AM.
