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Ls1 Iroc Swapping to Turbo - billet 78/75 and A/W

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Old 10-24-2016, 11:04 PM   #21
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I slready own them, friend made 750/850 whp/tq with these exact injectors on e85 in a full size Chevy pickup with the same turbo I have. They will get me to my goal of 650. Then when I want more I'll have them ported. Spending 4x what I paid for the car on injectors is not happening.
What fuel pump was this on? Just bought a walbro 450 and 80 lbs.
Doing a similar build goal of 600ish with E85.
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Old 10-24-2016, 11:20 PM   #22
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What fuel pump was this on? Just bought a walbro 450 and 80 lbs.
Doing a similar build goal of 600ish with E85.
Pretty sure twin Bosch 044, same as what's in the nova.

We can be boost buds ftw
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Old 10-25-2016, 08:03 PM   #23
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Are you building your own hotside?
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Old 10-25-2016, 08:47 PM   #24
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ive maxed out that same 7875 turbo with 80 lb injectors on e85
-6 feed and return
twin 340 pumps

ive used 80s on 3 seperate builds and theyve all made over 700 tire on corn with room to spare

you dont need a giant fuel system for what youre wanting to do.
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Old 10-25-2016, 10:14 PM   #25
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Are you building your own hotside?
Yessir, 2.25 tube. I built the one for my nova and it came out very nice.





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Originally Posted by mkvamso View Post
ive maxed out that same 7875 turbo with 80 lb injectors on e85
-6 feed and return
twin 340 pumps

ive used 80s on 3 seperate builds and theyve all made over 700 tire on corn with room to spare

you dont need a giant fuel system for what youre wanting to do.
Thank you, that is the same thing I read all over. Glad to see some more input. The billet 78/75 I don't believe has been released, I'm expecting delivery late this week/next from my pre order. According to vs racing, it's shown about 18% improvement over the cast 78/75. Very excited to try it.
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Old 10-26-2016, 10:42 PM   #26
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Some important pieces showed up today
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Old 10-27-2016, 06:17 AM   #27
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80# injectors on e85 will go pretty fast . my buddy's Camaro ran 9.44@ 140 mph @3550 lbs

20.3 psi boost
15 degrees timing
e85 58 psi base fuel pressure.
80# deka injectors 99% dc.
single on3 78/75 .96 turbo

sbe 5.3 triple 12 cam 706 heads , truck intake/tb.

the 78/75 and 80# injectors are a good match on e85.
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Old 10-27-2016, 09:41 AM   #28
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Looks like 3.08 with a 26" tire will be 6100 @ 140mph. Not including converter slip. I have a set of gears already, I may just try them out. I wonder how much of a turd it would be in a foot brake car leaving on 6-7#?
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Old 10-27-2016, 10:32 AM   #29
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Looks like 3.08 with a 26" tire will be 6100 @ 140mph. Not including converter slip. I have a set of gears already, I may just try them out. I wonder how much of a turd it would be in a foot brake car leaving on 6-7#?
I personally would like to see a different gear with the car on a 28... how much does it weigh? I bet youll have enough to get it moving off the foot brake
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Old 10-27-2016, 11:14 AM   #30
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I personally would like to see a different gear with the car on a 28... how much does it weigh? I bet youll have enough to get it moving off the foot brake
With me 3300 and all the nitrous stuff. So 3400 ish with me and turbo stuff? I'd try a 3.27 with the 28's
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Old 11-01-2016, 10:35 PM   #31
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Just recieved an order in progress update on the turbo, so hopefully that means they are shipping them out to customers! Can't wait to compare the billet wheel to my cast one
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Old 11-02-2016, 08:15 AM   #32
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Believe I will be going with the ls2 cam for my build also.
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Old 11-08-2016, 10:16 AM   #33
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I actually wound up ordering a custom turbo grind from FTI. Looking to start on this soon
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Old 11-09-2016, 12:48 PM   #34
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in for updates, im gathering parts for my twin turbo iroc ls swap at the moment
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Old 11-09-2016, 06:08 PM   #35
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Turbo arrived today! Looks good, don't see anything noticable as far as imperfections or anything wrong. Wheel looks sexy haha.




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Old 11-09-2016, 07:17 PM   #36
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following this one

interested on the hot side and how you plan to clear the steering box
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Old 11-09-2016, 08:40 PM   #37
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Quote:
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following this one

interested on the hot side and how you plan to clear the steering box
I PLAN on both truck manifolds forward and down, will require some sltering of the driver side outlet. I have s10 trans adapt motor mounts in mine, bolt in in the v6 location. My engine sits a little higher than most.

Here is more pictures.







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Old 11-30-2016, 12:32 AM   #38
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Bought a tig welder to play with, I'm going to cut out the 1/2 npt ports on the intercooler and weld in 1" npt ports and then use a bbc electric water pump I have here laying around as th pump.
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Old 12-11-2016, 01:14 AM   #39
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Made progress tonight! Cam swapped, hot said done except gate. Etc.









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Old 12-11-2016, 09:15 AM   #40
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Looks good! I've started the same thing but it's the opposite. Just started pulling the 150k 5.3 apart and going to rip it out of the car. Got a custom cam motion cam that just came in and lots of other goodies showing up. Money money money! Great to see another 3rd gen on this forum!
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