LS1TECH - Camaro and Firebird Forum Discussion

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-   -   Billet 7875 Results thread (https://ls1tech.com/forums/forced-induction/1878858-billet-7875-results-thread.html)

Lawhead 08-24-2017 10:23 PM

Billet 7875 Results thread
 
I've done a ton of searching on here and haven't really found too many people posting their results with the VSR 7875. Was looking for people to chime in with their track results/Dyno/street encounters

From mild 500rwhp set ups to maxing this thing out

Let's see them

Just got mine today to replace the 7668


https://cimg1.ibsrv.net/gimg/ls1tech...08d83a4a1a.jpg

Cwarta 08-24-2017 11:13 PM

https://cimg7.ibsrv.net/gimg/ls1tech...593876c80f.jpg

First pass ever with the combo in Colorado, 5500 d/a. Blew the map apart about 10' before the 1/8 stripe. 12# 12*

silvea 08-24-2017 11:41 PM

So your results are only valid up til the 8th mile? What kind of horsepower are you putting down. My old na build ran high 7's in the mid 90's.

Cwarta 08-24-2017 11:56 PM


Originally Posted by silvea (Post 19709891)
So your results are only valid up til the 8th mile? What kind of horsepower are you putting down. My old na build ran high 7's in the mid 90's.

Not sure, never dynoed it or ran it again, tore it apart to build my nova. 3500# or so

Lawhead 08-25-2017 06:22 AM

Sucks you couldn't get more info on it

forcd ind 08-25-2017 06:22 AM

I am interested in results also, as I was looking at that turbo for my present project-sort of a budget build (we know how that goes, lol)

yenkomike 08-25-2017 06:56 AM

vs billit 78/75 ran 10.80 at 125 mph on 5.3 with ls9 cam in 4300 lb Silverado. 20 psi boost.

47ford 08-25-2017 08:32 AM

I know it's not billet but I have an on3 7875 ran 10.70 @ 130 on 9 psi 3400lb camaro 6.0 blowthrough

Lawhead 08-25-2017 08:37 AM

We're gonna try our damn hardest to go 150 at 2900

01ssreda4 08-25-2017 09:14 AM

I'm planning on running mid 9s at 3300 pounds with a 5.3 and 4l80e. We will see if I reach my goal.

Lawhead 08-25-2017 10:37 AM

Yeah with the glide and being light I don't see why we can't hit our goals

Space was the limiting factor and I haven't seen any VSR 7875s go 150 yet, It may take a built 5.3 but were gonna try on the stock style parts first we got 10mph to make up

stoverz28 08-25-2017 12:38 PM

I made 705/746 through a cammed 5.3 at 16lbs and 19* but with T7575. This was also through a 6 speed. Would think the two turbos are very similar in flow numbers.

Ran 10.6 @ 133 with a slipping clutch.

Lawhead 08-25-2017 02:57 PM

Looks like you had some room to grow there too if you wanted to turn it up!

Tally TransAm 08-25-2017 03:57 PM

I was hoping this was going to be your results thread to get me to pull the trigger on swapping.

Lawhead 08-25-2017 07:22 PM

Still waiting on a carb man as soon as we have some data we will update

Tally TransAm 08-25-2017 08:11 PM

i'm really interested. based on the weight difference we are probably making similar power on a maxed out 7668 and 93 octane. mine has gone 6.5 @ 111 with the 4l80 and should go around 10.0 @ 138 @ 3600# (previous best with the manual was 6.7 @ 107 and 10.3 @ 136)

I dont see me doing much quarter mile but i'd like to approach a 6.0 @ 115 and break 145 mph if i ran it all the way out. it would be nice to get this turbo vs the huron speed one and save $150

Lawhead 08-25-2017 10:44 PM

Honestly if you're trapping 111 at 3600 you're make a ton more than me that's about a 800 pound difference with only 1 mph

That On 93??

yenkomike 08-26-2017 06:18 AM

be carefull pushing those turbos on 93 at the levels you are pushing they are pumping a ton of heat.

my buddys Camaro has ran 6.05 at 114 and 9.44 at 141 mph on a cast on3 78/75 @3550 lbs E85 . engine is a 5.3 with isky triple 12 cam 400th and 3.73 gear with 31 by 13 slicks. we were noticing it getting iat pretty high at 20 psi boost around 175* so we swapped to his billit borg 80/83 t4 and no track runs yet but street testing has seen the iats under 150* and that's heat soaked without a cool down.

I think the .96 housing is the limiting factor with all the 78/75 turbos. but for the money they cant be beat. good luck.

Lawhead 08-26-2017 07:19 AM

Car is coming off 93 after this swap

Tally TransAm 08-26-2017 07:41 AM


Originally Posted by Lawhead (Post 19710736)
Honestly if you're trapping 111 at 3600 you're make a ton more than me that's about a 800 pound difference with only 1 mph

That On 93??

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


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