What turbo should I get?
May 17, 2006 | 08:14 PM
#31
Originally Posted by Charged_5.3
Thanks for the info! So then getting a 6.0 would be better? Im no tree hugger by any means, but whats the gas mileage on those things? I plan to make it my DD so it would be good to know around how much I'm gonna spend on gas. Are you looking for a turbo that gets 8-10 psi on 5.3? I know that the STS 60-1 turbo can get you to those numbers. Don't know if this was the info you were looking for.
. My Trans Am dynoed after tuning @ 498HP/579TQ (still has issues). I've never checked the economy since it is not a DD, but I'd estimate 10-12 around town (but then it is hard not to spool the turbo a couple of times when I drive it).Ironically, the 60-1 is what is mounted in place of the muffler on my 383/LT4 Trans Am! I do have a map for that unit in my Turbo Calc program & it looks like it runs out of range at higher RPM on a 325 CID motor at 10 PSI. The closest turbos by Garrett look to be the GT40-54 or a T61~T66 (the program doesn't have all the maps).
May 17, 2006 | 08:35 PM
#32
TECH Apprentice
Joined: May 2006
Posts: 320
Likes: 0
Originally Posted by V8 Supra Builder
I was going to go with a LQ4/LQ9 6.0 setup in my Supra, but after some shopping & research I can do what I want with a 5.3 for a lot less $. IMHO @600+ HP fuel economy is not really a factor . My Trans Am dynoed after tuning @ 498HP/579TQ (still has issues). I've never checked the economy since it is not a DD, but I'd estimate 10-12 around town (but then it is hard not to spool the turbo a couple of times when I drive it).
Ironically, the 60-1 is what is mounted in place of the muffler on my 383/LT4 Trans Am! I do have a map for that unit in my Turbo Calc program & it looks like it runs out of range at higher RPM on a 325 CID motor at 10 PSI. The closest turbos by Garrett look to be the GT40-54 or a T61~T66 (the program doesn't have all the maps).
. My Trans Am dynoed after tuning @ 498HP/579TQ (still has issues). I've never checked the economy since it is not a DD, but I'd estimate 10-12 around town (but then it is hard not to spool the turbo a couple of times when I drive it).Ironically, the 60-1 is what is mounted in place of the muffler on my 383/LT4 Trans Am! I do have a map for that unit in my Turbo Calc program & it looks like it runs out of range at higher RPM on a 325 CID motor at 10 PSI. The closest turbos by Garrett look to be the GT40-54 or a T61~T66 (the program doesn't have all the maps).
. 60-1 will get you 8-10 psi but Im pretty sure you're gonna wanna crank up the boost eventually! If you're planning to, it would be best to get the GT67 so that you can save some $$$in the long run. No ca$h=No fun.
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