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Truck 10 bolt in an Fbody (yes we can)

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Old 08-27-2016, 09:56 PM   #21
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Astro vans and blazers got it too.

Wheres the drunk guy? Come back drunk guy.
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Old 08-28-2016, 10:50 AM   #22
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Originally Posted by murphinator View Post
the 7.5 was in all the s10 variants , it was in a lot of g bodies too including rwd monte ss's . I think Monza/vega etc... and variants of those basically low hp 70's and 80's stuff got them while higher perf 72-81 chevelles , Camaros , firebirds , novas ,venturas etc... got 8.5's and a couple g bodies gn ,t type , 442 and cant recall if the grand prix 2+2 got it also. I had a couple monte ss's 87 and 88 and felt ripped off that the slower 442's got the beefy rear lol
There were S10's that came with it. After 93, higher option models etc DID come with the 8.5. It's the preferred axle for S10 V8 swaps. I do think if the f cars had the 8.5, the T56 clutch hamstring could have been left undone.
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Old 08-28-2016, 01:14 PM   #23
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Wow, shows you what I know then about other platforms. Apparently not much
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Old 08-29-2016, 07:55 AM   #24
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Quote:
Originally Posted by Darth_V8r View Post
There were S10's that came with it. After 93, higher option models etc DID come with the 8.5. It's the preferred axle for S10 V8 swaps. I do think if the f cars had the 8.5, the T56 clutch hamstring could have been left undone.
Are you saying that the clutch installed was intentionally weak in order to help safeguard the 7.5?

My clutch has significant slip at 30K.
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Old 08-29-2016, 03:29 PM   #25
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Are you saying that the clutch installed was intentionally weak in order to help safeguard the 7.5?

My clutch has significant slip at 30K.
Yes, it was. Sort of an 11th hour thing.

---"Oh, ****, the T56 is breaking our ten bolts, but we've got a zillion of these things already coming, so what do we do?"

---"I've got it, lets put a restrictor orifice in the clutch line to slow down the fluid flow so the driver can only hit the driveline so hard"

---"great idea, but what about the crud that builds up in the line at the orifice and eventually chokes it off?"

---"We'll deal with that if it happens. It's either that or we eat all these axles"

So, there are two things. The orifice in the clutch line - hence the "drill mod" to get rid of that orifice. The other thing is that self-adjuster mechanism, which softens over time, weakening the pressure plate. When it gets bad enough, the pedal starts randomly coming up half way, etc. Typically, the solution ends up being an aftermarket clutch without the adjuster AND an aftermarket master cylinder.

And eventually a better axle
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Old 08-29-2016, 03:35 PM   #26
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Originally Posted by Darth_V8r View Post
Yes, it was. Sort of an 11th hour thing.

---"Oh, ****, the T56 is breaking our ten bolts, but we've got a zillion of these things already coming, so what do we do?"

---"I've got it, lets put a restrictor orifice in the clutch line to slow down the fluid flow so the driver can only hit the driveline so hard"

---"great idea, but what about the crud that builds up in the line at the orifice and eventually chokes it off?"

---"We'll deal with that if it happens. It's either that or we eat all these axles"

So, there are two things. The orifice in the clutch line - hence the "drill mod" to get rid of that orifice. The other thing is that self-adjuster mechanism, which softens over time, weakening the pressure plate. When it gets bad enough, the pedal starts randomly coming up half way, etc. Typically, the solution ends up being an aftermarket clutch without the adjuster AND an aftermarket master cylinder.

And eventually a better axle
Lol. Yeah, I've noticed the pattern around here. Have my Monster and Tick in my garage waiting. NTO5R's already on.

And I plan to uh, eventually get a better axle. I'll be the 167,584th guy to see how long my 10 bolt can live with drive line snapping mods.
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Old 08-29-2016, 10:02 PM   #27
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<First hard launch or 1-2 shift> - BOOM

Welp...
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Old 08-30-2016, 12:05 PM   #28
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Originally Posted by AnotherWs6 View Post
Lol. Yeah, I've noticed the pattern around here. Have my Monster and Tick in my garage waiting. NTO5R's already on.

And I plan to uh, eventually get a better axle. I'll be the 167,584th guy to see how long my 10 bolt can live with drive line snapping mods.
Just make sure you start a thread asking how long your 10-bolt will last

Where did drunk guy go? I'm curious!
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Old 08-30-2016, 12:21 PM   #29
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Just make sure you start a thread asking how long your 10-bolt will last

Where did drunk guy go? I'm curious!
I actually laughed out loud at that. If I did start a thread it would only be like the 153,793rd so no biggy.

Yeah, where did drunken 8.5 guy go? **** tease.
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Old 08-31-2016, 06:17 AM   #30
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Without a full spool if a broken ring/pinion teeth inside can cause the axle to lockup at speed. That is the only thing that worries me about using a more efficient *weaker* ring/pinion axle, that broken ring/pinion teeth could cause it to lockup at speed. But with a full spool usually there's room for all the broken pieces to float around inside.

Last edited by Launch; 01-31-2017 at 05:34 PM.
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Old 08-31-2016, 08:01 AM   #31
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That's actually a good point and something that has crossed my mind as well. Teeth/lockup thing.
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Old 08-31-2016, 02:07 PM   #32
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Old 08-31-2016, 11:10 PM   #33
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No ****, what the hell man post a thread and never report back. Come on man!
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Old 09-01-2016, 12:58 AM   #34
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[QUOTE=AnotherWs6;19371253]I'd like to see this as well, dude was still drinking at 6am yesterday lol, he might take a while to recover.

LOL, KINDA MAKING ME WONDER WHAT HIS FABWORK LOOKS LIKE...
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Old 09-01-2016, 05:42 AM   #35
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Originally Posted by Darth_V8r View Post
There were S10's that came with it. After 93, higher option models etc DID come with the 8.5. It's the preferred axle for S10 V8 swaps. I do think if the f cars had the 8.5, the T56 clutch hamstring could have been left undone.
only the s10 zr2 pickup and blazer came with this rear. The rear was the same as the standard 1500 series rear, hence the need for the fender flares. It was wider and heavier and gave no real life advantage that I have ever found in the s10. I currently have both trucks sitting in my driveway and the zr2 is a Pig on gas....😠....
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Old 09-01-2016, 10:20 AM   #36
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^ Actually the Blazer Xtreme's also were available with a 8.5" on the standard s10 width with disc brakes and 3.42 gears

Curious to see the OP's venture into this as well. I have been debating on trying something similar starting with one of our bolt on mounts for our TAS systems for first and second gen f-bodies

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Old 09-01-2016, 10:27 AM   #37
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^ Actually the Blazer Xtreme's also were available with a 8.5" on the standard s10 width with disc brakes and 3.42 gears Curious to see the OP's venture into this as well. I have been debating on trying something similar starting with one of our bolt on mounts for our TAS systems for first and second gen f-bodies
that looks like a good approach vs putting the strain on the pinion housing.
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Old 09-01-2016, 10:36 AM   #38
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^ Actually the Blazer Xtreme's also were available with a 8.5" on the standard s10 width with disc brakes and 3.42 gears

Curious to see the OP's venture into this as well. I have been debating on trying something similar starting with one of our bolt on mounts for our TAS systems for first and second gen f-bodies

Two things that I did not want to know. 1 - that they put an 8.5 on a effing blazer and not on a 300+HP performance car. 2 - that whatever that BMR thing is exists. Now I'm curious have to go figure out what it is and how it works.
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Old 09-01-2016, 11:06 AM   #39
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Two things that I did not want to know. 1 - that they put an 8.5 on a effing blazer and not on a 300+HP performance car. 2 - that whatever that BMR thing is exists. Now I'm curious have to go figure out what it is and how it works.
I know. It still baffles me that they decided an appearance and handling packed S10 blazer was more deserving of a good rear end than their sport cars. I could understand the v6 cars coming with a 7.5, but the v8 cars? Come on GM....

Anyways, as for the piece I posted, it is part of our Torque Arm Conversion kit we make for the First and Second gen f-bodies and Novas. More can be found on them here:

http://bmrsuspension.com/?page=produ...id=25&catid=77
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Old 09-01-2016, 11:10 AM   #40
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Or at the VERY least on the T56 cars. I think they must have underestimated how much that T56 transfers to the rear
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