Originally Posted by Tally TransAm
(Post 19710843)
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 Solid run too for a heavy car LawHead in for some Great Results and your 150+ mph pass! |
We will see! Car gets a cage this week and Carb should be the following week Then we make some hits |
Originally Posted by Rudy72
(Post 19711520)
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. |
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 |
My billet 7875 is on its way from VSracing, will be putting it on my 4.8 fairmont in the coming weeks.... |
My billet 78/75 build thread starts about here..... https://ls1tech.com/forums/multimedi...s-vids-17.html |
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. |
Originally Posted by slowride
(Post 19715782)
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. I thought I saw they had a 7885 or like a 7892 or are those mid-frame turbos? |
Carb shows Thursday so let's hope next weekend we swap turbos and get to tuning |
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 |
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! |
Waiting for results ! |
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 |
Cast 7875 here, 11.05 @137. Full weight f body, makes 745/1042 through a th400. |
10.80 at 130 mph at 4400 lbs l33 with ls9 cam 400th 2003 Silverado. vsr billit 78/75 20 psi |
No hard numbers but I finally got some seat time in mine, holy muther 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. |
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. |
Originally Posted by Game ova
(Post 19740661)
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. |
Originally Posted by The BallSS
(Post 19715896)
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? |
Be interesting to see S475 vs 7875 on the same set up |
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