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Billet 7875 Results thread

 
Old 08-27-2017, 01:22 PM
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Originally Posted by Tally TransAm View Post
yeah, however, on that pass i lost a fuel pump on the launch and was running lean enough to melt a cylinder head on the big end. car was probably making a little more power than my normal tune
What brand and type of fuel pump, intank units? How many mile on that pump?

Solid run too for a heavy car


LawHead in for some Great Results and your 150+ mph pass!
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Old 08-27-2017, 03:04 PM
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We will see! Car gets a cage this week and Carb should be the following week

Then we make some hits
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Old 08-28-2017, 06:50 PM
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Originally Posted by Rudy72 View Post
What brand and type of fuel pump, intank units? How many mile on that pump?

Solid run too for a heavy car


LawHead in for some Great Results and your 150+ mph pass!

twin intank walbro 255's. no idea on miles, my car sits A LOT. pump was actually fine, a wire pulled out of a shitty fuse terminal on the launch.
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Old 08-31-2017, 02:52 PM
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Carb should be here next week, as well as the cage should be going in so we should be making some progress next week and hopefully get some numbers

Really surprised there isn't people out there pushing this turbo on E85
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Old 09-01-2017, 06:48 AM
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My billet 7875 is on its way from VSracing, will be putting it on my 4.8 fairmont in the coming weeks....
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Old 09-01-2017, 07:32 AM
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My billet 78/75 build thread starts about here.....

https://ls1tech.com/forums/multimedi...s-vids-17.html
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Old 09-01-2017, 09:13 AM
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I wonder how much more power can be expected from these t4 .96 housings with the 75mm turbine? I know PTE has CEA turbine wheels that would help flow, but I'm hoping to see someone offer a larger turbine wheel and/or housing that keeps these small frame turbos still flowing on larger engines and higher power levels.
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Old 09-01-2017, 11:41 AM
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Originally Posted by slowride View Post
I wonder how much more power can be expected from these t4 .96 housings with the 75mm turbine? I know PTE has CEA turbine wheels that would help flow, but I'm hoping to see someone offer a larger turbine wheel and/or housing that keeps these small frame turbos still flowing on larger engines and higher power levels.
Doesn't Comp Turbo have a larger turbine?
I thought I saw they had a 7885 or like a 7892 or are those mid-frame turbos?
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Old 09-01-2017, 02:37 PM
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Carb shows Thursday so let's hope next weekend we swap turbos and get to tuning
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Old 09-18-2017, 09:32 PM
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Should be getting the car back this weekend from the Cage Install

Storm down here in Florida put a hold on things

Picked up an Aluminum 5.3 as well which will have 243 heads and will be doing all the normal things people do to them to help them live should help make a little more power and take away some weight that was added from the cage
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Old 10-05-2017, 09:17 AM
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Should be getting the turbo on the car this weekend if Florida wants to play nice with the rain got the car back from getting a cage and got the E85 carb

Also have an Aluminum Gen 4 motor on the way were gonna do all the "tricks" too to make it last and see how far we can push this thing

Soon!
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Old 10-05-2017, 09:51 AM
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Waiting for results !
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Old 10-05-2017, 09:52 AM
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If this rain wasn't hampering things it would have been on yesterday and would have had the car back together but don't have the luxury of a place inside to actually work on the car so until we get some better weather I'll be back to the waiting game
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Old 10-06-2017, 05:18 AM
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Cast 7875 here, 11.05 @137. Full weight f body, makes 745/1042 through a th400.
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Old 10-06-2017, 06:40 AM
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10.80 at 130 mph at 4400 lbs l33 with ls9 cam 400th 2003 Silverado. vsr billit 78/75 20 psi
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Old 10-06-2017, 07:54 AM
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No hard numbers but I finally got some seat time in mine, holy ****** on just the 7lb wg spring this bitch goes sideways at 80. So much fun. Once I get it all dialed in i will report back.
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Old 10-06-2017, 08:58 AM
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What wastegate and bov are you guys running with this turbo ? I have the Huron speed truck manifold kit that accepts up to a 44mm wg and 50mm bov. I'm looking for suggestions . I like the numbers you guys are running in those heavier vehicles.
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Old 10-06-2017, 10:19 PM
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Originally Posted by Game ova View Post
Cast 7875 here, 11.05 @137. Full weight f body, makes 745/1042 through a th400.

I feel like watching that run would be like watching John force line up. 1000+ torque and only an 11 flat? Thing has a lot more potential time wise.
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Old 10-06-2017, 10:21 PM
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Originally Posted by The ****** View Post
Doesn't Comp Turbo have a larger turbine?
I thought I saw they had a 7885 or like a 7892 or are those mid-frame turbos?
Comp is like 5 minutes from my school. I can always stop by and ask them if you would like. Send me a PM to remind me. I need to pick up stuff from them this week anyways.
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Old 10-07-2017, 06:43 AM
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Be interesting to see S475 vs 7875 on the same set up
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