Poll: 76mm Turbo or Heads/Intake?

[dville_gt]

The reason I suggested the SD60's is the actual injector data is out there which makes tuning it very nice.
The stock lq9 cam is the same as a stock ls1 cam. You should try the ls6-ls2 cam insted. Its worth 20rwhp over the lq9 cam and can be found for $50-$75.Or another option is the LS9 cam. You can buy it new for $120.

good to know, are any of these cams on a smaller base circle? i went with 7.425" tsp pushrods that i assume won't work with stock cams (i believe stock is 7.375").

i have a buddy who i think has a ls6 cam that he'd sell me cheap. if not do you have a part number for the ls9 (is it worth any extra hp?)

also, how much harder is tuning going to be vs. what i have currently? i assume it is the same game, logging afr error and modifying the ve table accordingly (obviously with a more aggress PE rate and less timing)?

[Cobraman]

Throw some fofisixes in that bitch.


Or a B headed mod motor if you really want to go fast.


Lol

[Sam88gta1]

was planning to return to the stock lq9 cam and leave the good springs and hardware on the 317's

since i am already running the ls7 injectors can i not just have FIC convert them to 60, 80, or 93lb for like $200?

The reason I suggested the SD60's is the actual injector data is out there which makes tuning it very nice.
The stock lq9 cam is the same as a stock ls1 cam. You should try the ls6-ls2 cam insted. Its worth 20rwhp over the lq9 cam and can be found for $50-$75.Or another option is the LS9 cam. You can buy it new for $120.

[dville_gt]

Yes all are mpt76 q trim.
You only need a 60lb injector. Buy a NEW set of the SD 60's. You will have to upgrade to a two bar sd OS and use the 12580698 GM two bar map.
Have you given much thought to changing the cam?

why not do the 3 bar sd? does it cost more credits then the 2?

[dville_gt]

$200 and he'll make the ls3/ls7's 72lbs @ 3bar

http://ls1tech.com/forums/fueling-injection/1401753-fuel-injector-resizing.html

Tuning a modified injector is no different than any other, the only thing changed is the discharge plate, the injector orfice nor valve is touched. All Bosch LS style injectors are the same basic injector, the discharge plate and color is the only difference. So, we copy those plates and turn yours into the size required.

[dville_gt]

Yes all are mpt76 q trim.
You only need a 60lb injector. Buy a NEW set of the SD 60's. You will have to upgrade to a two bar sd OS and use the 12580698 GM two bar map.
Have you given much thought to changing the cam?

was planning to return to the stock lq9 cam and leave the good springs and hardware on the 317's

since i am already running the ls7 injectors can i not just have FIC convert them to 60, 80, or 93lb for like $200?

[Sam88gta1]

all mpt76 q trim .96ar?

how much injector did you need?

Yes all are mpt76 q trim.
You only need a 60lb injector. Buy a NEW set of the SD 60's. You will have to upgrade to a two bar sd OS and use the 12580698 GM two bar map.
Have you given much thought to changing the cam?

[Sam88gta1]

point taken. after looking at a t76 map it looks like it really is ideal for this motor.

question now is if there is any way to aquire one for less then 640.

also, is the .96 what all the 6 liter guys are running vs. the 1.0ar exhaust housing?

Try the Magnum 76. You can get one local from Vyron. .96 is what Chris and all of the other guys have run.

[2165 Turbo Rail]

yup all have the MPT76 (not going to lie.. don't remember if its q trim)

we all use 60lbs injectors and either Walbro 255 or Bosch 044 with corvette filter/regulator

Colling and BJ have 5.3 N/A

[dville_gt]

me, john (the green mile), Nathan Hale (the white 65 ford truck, TJ (nathans cousin with the green 36), August (60 somthing lincoln) another guy with a 65 chevy truck

we all have the exact same turbo some of us have LQ4 some have LQ9 and one has a LY6 (i think that is right) (Sam would know for sure)

all mpt76 q trim .96ar?

how much injector did you need?

[2165 Turbo Rail]

me, john (the green mile), Nathan Hale (the white 65 ford truck, TJ (nathans cousin with the green 36), August (60 somthing lincoln) another guy with a 65 chevy truck

we all have the exact same turbo some of us have LQ4 some have LQ9 and one has a LY6 (i think that is right) (Sam would know for sure)

[dville_gt]

You are power limited with your motor. You can not magically make more power with a bigger better turbo on your stock motor. The s400 will be a lazy dog under 5500 rpm. It will make boost under 5500 but nothing like the mp76 or the Magnum 76.

point taken. after looking at a t76 map it looks like it really is ideal for this motor.

question now is if there is any way to aquire one for less then 640.

also, is the .96 what all the 6 liter guys are running vs. the 1.0ar exhaust housing?

[Sam88gta1]

Ya, I emailed back and fourth with him today. Said he can't do anything cost wise on that turbo as the 649 is already a sale price. Lots of folks have recommended that turbo for the 6 liter and it's basically the same price as the MPT76. There will be additional cost obviously from the T6 stuff and 5inch exhaust, but from what I understand B/W makes a much better product then MP. I would be pissed though if the damn thing wouldn't spool until 5500rpm!

You are power limited with your motor. You can not magically make more power with a bigger better turbo on your stock motor. The s400 will be a lazy dog under 5500 rpm. It will make boost under 5500 but nothing like the mp76 or the Magnum 76.

[2165 Turbo Rail]

DOH sorry guess he changed his number. I haven't called him since the GTO has been finished

[85turbocoupe]

The S400 is WAY overkill for what you are trying to do. Stick with the 70 or 76mm Masterpower turbo. It will make 575-600 rwhp at 10lbs on pump gas with ease. Pulling the 6.0 for a much smaller 5.3 or 4.8 is a terrible idea. The 6.0 will make 60-70 more rwhp and torque at the same boost level and be just as safe.

Never said the 5.3 would make more or be more durable. My point was the 5.3's are dirt cheap and he could sell that lq9 and pay for 5.3 and a lot of the turbo parts. That being said.. looking at the car it appears he doesn't mind spending money. Either way the car is gonna be fast as shit.