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Billet 7875 Results thread

Old 10-25-2018, 04:19 PM
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98 Camaro LQ4 6.0 huron speed v1 kit 7875 turbo LJMS stage 2 turbo cam 18 psi and 12* 80# Dekas springs and trunion upgrades stock bottom end on pump gas/meth

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Old 11-17-2018, 04:26 PM
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What is the advantage of the billet 7875 over the cast wheel 7875? Anyone swapped from one to the other? Is the billet worth the extra money?
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Old 11-19-2018, 08:37 PM
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Originally Posted by Kfxguy View Post
What is the advantage of the billet 7875 over the cast wheel 7875? Anyone swapped from one to the other? Is the billet worth the extra money?
I had the billet 7875 . Stock 4.8 no cam nothing . Stoxk 80e . I made 670 rwhp on 19# .

my buddy had the cast on his heads/ boost cam 5.7l ls1 . He made 570 on 12# . In my opinion . The billet is was more efficient
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Old 11-19-2018, 09:07 PM
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Originally Posted by Mavn View Post
I had the billet 7875 . Stock 4.8 no cam nothing . Stoxk 80e . I made 670 rwhp on 19# .

my buddy had the cast on his heads/ boost cam 5.7l ls1 . He made 570 on 12# . In my opinion . The billet is was more efficient
maybe. But heres what I figured up. Without knowing either motors hp before the turbo, I estimated the hp gain at 30hp per psi. His motor would have made about 240hp more on 19lbs (remember, estimate because we all know that too many variables and his turbo may have not supported that much hp). So that would have put him in the 800hp range. The billet is supposed to be more efficient and spool faster and be capable of more hp, but I wish someone had the cast, ran their car, put a billet on with no other changes and ran or dynonit again. That would be a true testament.
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Old 11-20-2018, 12:34 PM
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No dyno numbers, but i finally got this one running and tuned. With the Huron speed kit, and a 7lb spring it makes 11.5ish psi. It goes into positive boost at 2500rpms (which i thought was good) Pulls real nice as is, timing is between 17-19 on pump e70, afr is 11.2.

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Old 11-20-2018, 02:31 PM
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Originally Posted by 01ssreda4 View Post
No dyno numbers, but i finally got this one running and tuned. With the Huron speed kit, and a 7lb spring it makes 11.5ish psi. It goes into positive boost at 2500rpms (which i thought was good) Pulls real nice as is, timing is between 17-19 on pump e70, afr is 11.2.

https://www.youtube.com/watch?v=EmnO8pPmXow
SBE ls1?
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Old 11-20-2018, 03:13 PM
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Originally Posted by Mavn View Post
SBE ls1?
L33 5.3, 4l80e, Moser 9 inch

https://ls1tech.com/forums/forced-in...-75-build.html
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Old 11-20-2018, 03:15 PM
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Hope it was the converter, but that high gear sounds very suspect.
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Old 11-20-2018, 03:21 PM
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Originally Posted by Game ova View Post
Hope it was the converter, but that high gear sounds very suspect.
do what? you lost me

Let me clarify, the 80e tuning isn't/wasn't done there. I didn't tune the manual tables, I had it in 2nd coming over the hill, because i wasn't 100% throttle the ****** shifted to third before i moved the shifter. It's in a table in the tune I just haven't corrected it yet, if that's what you're referring to.
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Old 11-20-2018, 03:23 PM
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Originally Posted by 01ssreda4 View Post
do what? you lost me
I watched the video, sounded like on the 2-3 shift, the transmission was slipping. Either that, or it was riding the converter. RPM sounded like it shot up.
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Old 11-20-2018, 03:49 PM
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Edited my comment, you are correct
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Old 11-20-2018, 09:42 PM
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I have a cast on3 78/75 and have gone [email protected] im my 3750~ weight Camaro on 20#s locking my converter.
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Old 11-25-2018, 03:51 PM
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4.8, BTR Stage 2, BTR springs, 7875 VS Billet, 4l80e w/HD kit, Circle D single unlocked, 8.8 w/3:73 gears, A2A, E85. 93 Mustang, 3400lbs with driver. Best run to date 10.30 @ 135 with a 1.6 60', 15psi 1rst and 2nd, 10psi 3rd to keep my speed at 135 or less (6pt no cage). Dyno soon to tune to 20psi.

Last edited by fegoins; 11-26-2018 at 05:16 PM.
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Old 12-07-2018, 12:56 AM
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6.0 LQ4 7875, tick stg1 turbo cam, 317s, 3 down pipe with 3 cutout, t-56 car made 711/779 on 17 psi. 530/570 on 10 psi. It makes peak boost around 5,300 rpm and drops off after that.
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Old 12-08-2018, 04:02 AM
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Originally Posted by BlkBird2000 View Post
6.0 LQ4 7875, tick stg1 turbo cam, 317s, 3 down pipe with 3 cutout, t-56 car made 711/779 on 17 psi. 530/570 on 10 psi. It makes peak boost around 5,300 rpm and drops off after that. https://youtu.be/QN8B6BRMJ4U

Nice numbers, Im curious if you have it in 4th gear and nail the gas at what rpm does it start making boost? Is that the cast or Billet 7875?
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Old 12-08-2018, 10:10 AM
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Originally Posted by 4EyedTurd1 View Post



Nice numbers, I’m curious if you have it in 4th gear and nail the gas at what rpm does it start making boost? Is that the cast or Billet 7875?
if I do that in any gear, boost take a split second to hit. If you want I can take a video of it. Just tell me what gear and rpm you want me at. Mines an auto tho.

Last edited by Kfxguy; 12-08-2018 at 10:21 AM.
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Old 12-08-2018, 01:48 PM
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I ask BlkBird2000 since he has a 6.0
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Old 12-08-2018, 01:58 PM
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Originally Posted by 4EyedTurd1 View Post
I ask BlkBird2000 since he has a 6.0
well excuse me lol. I have a 5.7 and I figured it would be relevant because it would turn on faster with a 6 liter vs 5.7. Ill refrain trying to help next time. I actually went did a video but I wont waste my time posting it.
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Old 12-08-2018, 05:54 PM
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Well....go ahead and post it.
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Old 12-09-2018, 02:43 PM
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Originally Posted by 4EyedTurd1 View Post
Well....go ahead and post it.

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