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Billet 7875 Results thread

 
Old 12-09-2018, 01:55 PM
  #81  
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Originally Posted by Kfxguy View Post
you better get gas lol 50mile range is only gonna get you a couple blocks like that 😂
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Old 12-09-2018, 04:22 PM
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Originally Posted by Drj8787 View Post

you better get gas lol 50mile range is only gonna get you a couple blocks like that 😂
yea I ended up picking up my grandmother one city over and then made it almost home and stopped and got some
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Old 12-09-2018, 04:41 PM
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I went [email protected] on a cast wheel 78/75, 6.0l, ss2 cam 3750 lbs,and I just finished up another build had a square port 6.0l, ss2, 4l80e unlocked do 645rwhp on 15lbs with a VS billet 78/75.

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Old 12-09-2018, 11:03 PM
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Originally Posted by Turbo D View Post
I went [email protected] on a cast wheel 78/75, 6.0l, ss2 cam 3750 lbs,and I just finished up another build had a square port 6.0l, ss2, 4l80e unlocked do 645rwhp on 15lbs with a VS billet 78/75.

https://youtu.be/BYNRDDtCnLY
What boost pressure was it set to on the 10.85 pass? Also, did you get any numbers on the dyno when it was at 10 psi?
Love the "free hat" haha
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Old 12-10-2018, 07:10 PM
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Originally Posted by Kfxguy View Post

yea I ended up picking up my grandmother one city over and then made it almost home and stopped and got some

Did grandma like the whistling noises? You didnít give her whiplash did ya, lol?
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Old 12-10-2018, 08:07 PM
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LS3 stock bottom end + Ported heads and 235/231 cam + Precision 7675 = 817rwhp/758rwtq @ 16psi on 93 + meth
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Old 12-23-2018, 03:17 PM
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Guys I’m swapping my cast 7875 for a billet 7875 right now. I have no Dyno numbers but I’m making only this change and I drive the car almost every day. So I will be able to tell you the difference I feel, if any. I’m really in tune to everything with the car. I feel that my butt dyno is pretty accurate to tell me if there’s a difference or not. I can give you guys my assessment if your interested.
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Old 12-24-2018, 12:03 AM
  #88  
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Ok here’s my take on it.

1) sounds total different. It has less of a whistle sound
2) it appears to spoil faster. And it’s only a very little bit. If I had to put a time on it, I’d say it’s about a tenth of a second faster. How do I know? Well I it is a noticeable less lag. Not that I had much lag before.
3) midrange feels a bit stronger. I’d say about 50-60ftlbs more.
4) checking logs and videos and comparing, it’s .2 quicker from 60-115mph.
5) the blowoff valve is louder for some reason.
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Old 12-24-2018, 12:12 AM
  #89  
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Originally Posted by Kfxguy View Post
Ok hereís my take on it.

1) sounds total different. It has less of a whistle sound
2) it appears to spoil faster. And itís only a very little bit. If I had to put a time on it, Iíd say itís about a tenth of a second faster. How do I know? Well I it is a noticeable less lag. Not that I had much lag before.
3) midrange feels a bit stronger. Iíd say about 50-60ftlbs more.
4) checking logs and videos and comparing, itís .2 quicker from 60-115mph.
5) the blowoff valve is louder for some reason.
I can buy the sound, and the spool time you mention. But I seriously doubt you're making that much, if any at all more torque. I went from a billet precision to the cast on3 and it made the same torque, I know this because I put it on the rollers.
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Old 12-24-2018, 12:26 AM
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Originally Posted by Game ova View Post
I can buy the sound, and the spool time you mention. But I seriously doubt you're making that much, if any at all more torque. I went from a billet precision to the cast on3 and it made the same torque, I know this because I put it on the rollers.
i wont argue that, because it does spin the tires from a roll any differently. But the initial hit does feel stronger. Do I feel that itís a huge difference? No. Im not sure if I think itís worth the extra money. Im wondering if I should have skipped this unit and went to the on3 BMF 7675.
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Old 12-24-2018, 12:33 AM
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Originally Posted by Kfxguy View Post


i wont argue that, because it does spin the tires from a roll any differently. But the initial hit does feel stronger. Do I feel that itís a huge difference? No. Im not sure if I think itís worth the extra money. Im wondering if I should have skipped this unit and went to the on3 BMF 7675.
I can't cosign this, but I've read that the BMF lights off so fast that it makes rod bending torque. In other words, it spools almost too fast. Again, this is hearsay as I have no experience with the unit.
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Old 12-24-2018, 12:39 AM
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Originally Posted by Game ova View Post
I can't cosign this, but I've read that the BMF lights off so fast that it makes rod bending torque. In other words, it spools almost too fast. Again, this is hearsay as I have no experience with the unit.

so do you think it would be a bad idea? I do have a good boost controller that should keep it in check.
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Old 12-24-2018, 12:43 AM
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Originally Posted by Kfxguy View Post



so do you think it would be a bad idea? I do have a good boost controller that should keep it in check.
Eh, I'm sure it's fine. May have been a timing issue (too much too early) who knows.
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Old 12-26-2018, 08:32 PM
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Ah man, I was hoping the spool noise was louder with the Billet lol... love my cast vs 78/75 spool sound.

Viren said that the billet would only be worth about 8% increase in airflow at 11-14psi. Itís not till you get much higher 20+psi that you get the full 18% flow increase.
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Old 12-26-2018, 08:54 PM
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Originally Posted by customblackbird View Post
Ah man, I was hoping the spool noise was louder with the Billet lol... love my cast vs 78/75 spool sound.

Viren said that the billet would only be worth about 8% increase in airflow at 11-14psi. Itís not till you get much higher 20+psi that you get the full 18% flow increase.
yea it wasnít a big difference. I actually kinda felt at first it might not have did anything but after watching some vids, Iím convinced it has. I definitely feel like itís not struggling after 6000 like it was before. I think I know what fooled me tho. After driving it more Iíve noticed the initial boost hit isnít as abrupt as the cast. What happens is it starts to build boost sooner and the point itís ďbuildingĒ boost, the cast is not in boost and all of a sudden it is. The cast comes in before and is in full boost around the same as the cast or maybe a couple hundred rpm sooner but say 500-1000rpms before that, itís got a couple psi where the cast has none then all. That will fool you. The billet is faster and makes the car more responsive. Iím not sure if you saw the video in my build thread but Iíll post it here. This is on 8.5psi. Also Iím still running through full restrictive exhaust and a squeezed down pipe that is choking it. Iíll be opening it up more soon.

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Old 12-26-2018, 09:16 PM
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Instead of making you guys try the compare, I took screenshots to illustrate.

First one is aboit 60mph. The cast one is on bottom and has the lead (had to time then just right)




the billet one has taken over

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Old 12-26-2018, 09:23 PM
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I understand and appreciate the effort to show the difference, but really, the dyno....or the track would have really been the way to show what each unit has to offer. Screenshots don't really get it done imo.
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Old 12-26-2018, 09:27 PM
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Originally Posted by Game ova View Post
I understand and appreciate the effort to show the difference, but really, the dyno....or the track would have really been the way to show what each unit has to offer. Screenshots don't really get it done imo.
Okay.
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Old 12-26-2018, 10:09 PM
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Thanks kfx
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Old 12-26-2018, 10:24 PM
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Originally Posted by 007FJ View Post
Thanks kfx

welcome.

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