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JY5.3+LS9cam+s475+22lbs of boost in a 88GT

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Old 11-04-2012, 12:28 AM
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Originally Posted by brewster240
this car is cool, but it doesnt give me that special feeling like the fairmont and the others.

why doesnt the flat bed have a lq4? i bet it would be a lot better in everyway.
haha i know what you mean, the tow truck? we might lsx the thing eventually at the time we had the 454 laying around and it was easy to install without doing fuel pumps, injectors, megasquirt, msd, etc etc.

Originally Posted by jridenour31
I like this car. Much less of a hunk of **** lol, not that the other stuff isn't cool.
haha
it was a yellow hunk of **** in someones yard before we go it lol

Originally Posted by scmaro
Where you from? I'm about half an hour from maple grove, and I've been thinking about ditching the lt1 for a turboed 5.3!
im upper macungie near allentown
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Old 09-18-2013, 09:44 PM
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swapped to a cast larger s480 unit today, going to do some dyno testing and track racing this weekend weather permitting

car made 600rwhp before on 22lbs of boost and 16deg of timing and went 9.86 @ 140mph consistently

we will see how the bigger exhaust 80 does
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Old 09-19-2013, 06:19 AM
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Is this the 96 mm turbine with the 1.32 turbine housing?
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Old 09-19-2013, 07:51 AM
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i believe it is the 96mm turbine 1.35 AR so it is exactly like the billet one we were also testing, but it is Cast
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Old 09-19-2013, 07:49 PM
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Originally Posted by 94'BLKBRD
What rack are you using?

I'm thinking about deleting my Power Steering and run the truck manifolds I already have. Did you need to relocate the alternator or was it more of a weight reduction removing the alt/PS bracket?

Also, what size is your belt and where is your belt tensioner located?
You can just use the truck brackets just reroute your belt. I'm sure there just using a stock rack. It's fine just to use a power steering rack with no power steering .. But I just use the stock location for the tensioner on my fairmont.
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Old 09-22-2013, 08:12 PM
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put the car on the rollers today with the 80mm,
running out of fuel on 14psi wtf

going to have to check out the fuel feed situation
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Old 01-18-2014, 08:15 AM
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Any updates in this car Denman?
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Old 01-18-2014, 08:54 AM
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Wow, this thing is impressive!
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Old 01-18-2014, 05:06 PM
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Originally Posted by jleews6
Any updates in this car Denman?
ended up being bendy rods, we put in a ly6 we had, 58x motor

running on microsquirt still, stock cam it made 615rwhp on 14psi... stock cam!

waiting for the snow to go away for it to make hits
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Old 01-18-2014, 05:20 PM
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Can't wait to get mine running. Doing a L33 with a trick flow cam, eBay head studs, LS9 gaskets, holley high rise intake and 80lb injectors in a fox as well. Went with the VS Racing 80mm turbo and I am hoping for about 700rwhp. Still wonder if I should have gone with an s475 or 480 to meet my goal.
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Old 01-18-2014, 05:41 PM
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with the earlier turbo, was 600rwhp at 22psi kind of low for that amount of boost? or was that because it was a 220k mile JY LS, or maybe the 22psi was because of some sort of restriction?
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Old 01-18-2014, 08:38 PM
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Originally Posted by denmah
ended up being bendy rods, we put in a ly6 we had, 58x motor

running on microsquirt still, stock cam it made 615rwhp on 14psi... stock cam!

waiting for the snow to go away for it to make hits
Wow those big heads really move some air. A small cam would be another 100 hp.
Cant wait to see it run.
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Old 01-19-2014, 05:03 PM
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Originally Posted by SCaddict
Can't wait to get mine running. Doing a L33 with a trick flow cam, eBay head studs, LS9 gaskets, holley high rise intake and 80lb injectors in a fox as well. Went with the VS Racing 80mm turbo and I am hoping for about 700rwhp. Still wonder if I should have gone with an s475 or 480 to meet my goal.
i did an easy 675rwhp with the magnum 80mm from VSracing

Originally Posted by WstSidHomE
with the earlier turbo, was 600rwhp at 22psi kind of low for that amount of boost? or was that because it was a 220k mile JY LS, or maybe the 22psi was because of some sort of restriction?
in my experience these stock headed lm7s do not really like the ls9 cam

Originally Posted by jleews6
Wow those big heads really move some air. A small cam would be another 100 hp.
Cant wait to see it run.
yep, we have a cam for it, going to cam it and then redyno and take it out racing this summer
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Old 01-19-2014, 05:50 PM
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What was done to the motor to make the 675rwhp? How much boost?
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Old 01-19-2014, 06:31 PM
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Looks like I'm getting rid of my 99-04 rods in my motor. Just more money.
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Old 01-19-2014, 11:18 PM
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Originally Posted by SCaddict
What was done to the motor to make the 675rwhp? How much boost?
stock motor, heads, intake, tick turbo cam.
16psi

stock 215k mile longblock
thru a 80e, 31 inch tall tires, 2 piece driveshaft etc lol
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