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#1051792 - 06/26/17 01:37 AM Ls1 drop spindle question  
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Big3 Offline
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Big3  Offline
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Lancaster, Ohio
Planning on getting back to work on my 87

Current setup:
Cast small block w/cast heads
B-body 1le brake "upgrade"
2"drop front springs

Plans:
6.0 or 6.2 Ls3
Ls1 front brakes on blazer spindles

My question is this ... 2" drop blazer splindles or stock blazer spindles?
I'm thinking 2" drop spindles with adjustable coil over front shocks due to the weight diff of the engine

Also : any way possible to use my hotchkis upper arms with the blazer spindles? I'm not thinking I can 😢


Last edited by Big3; 06/26/17 01:40 AM.

87 MCSS Black w/Saddle
383 w/dart heads,Functional Goodmark hood.
700r-4, Gforce member,4.10s
1LE's w/Hotchkis uppers,2" drop & ZQ8's
#1052058 - 07/06/17 08:31 PM Re: Ls1 drop spindle question [Re: Big3]  
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upflying Offline
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Reno, NV
I installed Belltech 2" drop spindles on mine. The drop brought the front of the car down slightly lower than stock. Springs and everything else is stock except Bilstein shocks. The car sat real high after the engine change.

Last edited by upflying; 07/06/17 08:33 PM.

86 MCSS Notchback coupe, LS3, 4L65E, QP 9", Eaton Truetrac, 4 wheel disc, column shift, Dakota Digital, silver with maroon bench interior

#1053973 - 10/21/17 11:26 AM Re: Ls1 drop spindle question [Re: Big3]  
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axld Offline
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lakeland,fl
i know this is a older thread, the next upgrade is brakes . i am thinking of the 12''LS1 with 2'' drop spindles also. has anybody dealt with flynbye? seems i can't get hold of them.


86 SS . Custom Paint. Built 6.0 with LS3 Top End .TSP Custom grind cam. FITECH ecu and harness.TKO 600 5 spd. Quick 9'' / 3.70 Gearing. ZQ8 Spindles. KORE3 12.8'' frt Brake Kit. UMI Rear Adjustable UCA. Rear LCA. UMI Front Chassis Bar. UMI rear shock tower brace. BMR Coil Springs. BMR Rear Sway Bar. N90 17'' Wheels . . SO FAR..............lol.
#1054021 - 10/23/17 07:05 PM Re: Ls1 drop spindle question [Re: Big3]  
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84 ZZ4 Offline
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84 ZZ4  Offline
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San Antonio, TX
I have heard before that FlynBye may take some time to contact, as it is a small business, but I have heard great feedback other than that.

Brackets made by UMI or Kore3 may be another option, they are made to fit the C5/C6 calipers to 98-2002 Blazer or G-body spindles.

I would assume the mounting position to the spindle would vary, since these are intended for 13" rotors.
You 'may' be able to tap new holes on the adapter plate for the spindle position and be done.

In no particular order:
http://umiperformance.com/catalog/index.php?main_page=index&cPath=8_398

http://www.kore3.com/proddetail.php?prod=10441-02
HTH


After further review of the different brackets, you may be better off getting some that will fit without the guesswork.
I'm not sure there is enough material to add another set of holes located closer inside the radius.
JMO



[Linked Image]
#1054036 - 10/24/17 08:34 AM Re: Ls1 drop spindle question [Re: Big3]  
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axld Offline
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axld  Offline
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lakeland,fl
yes I have looked at those also, the FlynBye looks complete ready to bolt on with brake lines ( on a 12'' rotor) but I have tried to call and e-mail several times now with no luck, so now I am thinking that after a purchase / customer service is a problem. I like to TALK to a person before I buy . guess I will measure for a bigger rotor set up. thanks.


86 SS . Custom Paint. Built 6.0 with LS3 Top End .TSP Custom grind cam. FITECH ecu and harness.TKO 600 5 spd. Quick 9'' / 3.70 Gearing. ZQ8 Spindles. KORE3 12.8'' frt Brake Kit. UMI Rear Adjustable UCA. Rear LCA. UMI Front Chassis Bar. UMI rear shock tower brace. BMR Coil Springs. BMR Rear Sway Bar. N90 17'' Wheels . . SO FAR..............lol.
#1054038 - 10/24/17 12:18 PM Re: Ls1 drop spindle question [Re: Big3]  
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MC96 Offline
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St. Johns MI
I see a lot of people getting the blazer spindle then upgrading to the C5 stuff.

A lot of wasted time and effort, skip the blazer stuff and get the UMI bracket and go directly to the C5 caliper on your factory spindle (or 2100 belltech)


86 SS
400SBC, 4l80e, MSD Atomic injection/trans controller, Tilt glass clip, all tubular arms, corvette brakes, 9" rear
In progress
#1054061 - 10/25/17 10:43 PM Re: Ls1 drop spindle question [Re: Big3]  
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axld Offline
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lakeland,fl
yea MC96, looks like the way I am going ( with drop spindles),I can build them up and swap out the whole assy.


86 SS . Custom Paint. Built 6.0 with LS3 Top End .TSP Custom grind cam. FITECH ecu and harness.TKO 600 5 spd. Quick 9'' / 3.70 Gearing. ZQ8 Spindles. KORE3 12.8'' frt Brake Kit. UMI Rear Adjustable UCA. Rear LCA. UMI Front Chassis Bar. UMI rear shock tower brace. BMR Coil Springs. BMR Rear Sway Bar. N90 17'' Wheels . . SO FAR..............lol.
#1054065 - 10/25/17 11:01 PM Re: Ls1 drop spindle question [Re: Big3]  
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MC96 Offline
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St. Johns MI
Thats what I did, I used a different company other than UMI, but I would probably recommend those guys as their bracket is the same thing and they are a great group. I went with wilwood hubs but having some old stock rotors turned down is alot cheaper. Just go get some S10 ones at a U pull.

Last edited by MC96; 10/25/17 11:02 PM.

86 SS
400SBC, 4l80e, MSD Atomic injection/trans controller, Tilt glass clip, all tubular arms, corvette brakes, 9" rear
In progress
#1054195 - 11/02/17 02:31 PM Re: Ls1 drop spindle question [Re: Big3]  
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SickSpeedMonte Offline
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MD
I don't trust a turned down rotor as a hub. You remove a lot of strength from the hub when you remove the rotor. It was never intended to function that way. Aren't the blazer hubs steel? I'm sure they'd make them cast if they could, as it would be cheaper.

#1054196 - 11/02/17 03:26 PM Re: Ls1 drop spindle question [Re: Big3]  
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MC96 Offline
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MC96  Offline
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St. Johns MI
Blazer? As in the bolt on hubs? Yes machined steel, but youre paying almost as much as the wilwood hubs for those, and its a wear item. The wilwood hubs use the stock bearings which are dirt cheap to replace. Ive read somewhere that a spindle with a pin is actually stronger than a sealed unit as well.


A friend of mine ran a stock car in the St. Louis area, he ran with no RF caliper and a machined down rotor/hub and never had an issue, I know racing and tons of street miles is an apples to oranges comparison but dirt gets rough.

Here is the company I bought brackets from http://www.krfabs.com/product_detail.php?productID=4 The hub they sell in their kit appears to be a cast trailer hub. I just bought a set of Wilwoods, with the discount I had it was dumb not to.


86 SS
400SBC, 4l80e, MSD Atomic injection/trans controller, Tilt glass clip, all tubular arms, corvette brakes, 9" rear
In progress
#1054197 - 11/02/17 03:32 PM Re: Ls1 drop spindle question [Re: 84 ZZ4]  
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MC96 Offline
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St. Johns MI
Originally Posted by 84 ZZ4
I have heard before that FlynBye may take some time to contact, as it is a small business, but I have heard great feedback other than that.

Brackets made by UMI or Kore3 may be another option, they are made to fit the C5/C6 calipers to 98-2002 Blazer or G-body spindles.


In no particular order:
http://umiperformance.com/catalog/index.php?main_page=index&cPath=8_398

http://www.kore3.com/proddetail.php?prod=10441-02
HTH




UMI only makes a bracket to go with our stock spindle, they dont offer a Blazer spindle option.


Like I said, before, if you want to get Vette brakes and do it as cheap as possible one time, skip the blazer and put them right on the stock, or drop spindle for our cars.


86 SS
400SBC, 4l80e, MSD Atomic injection/trans controller, Tilt glass clip, all tubular arms, corvette brakes, 9" rear
In progress
#1054204 - 11/02/17 09:30 PM Re: Ls1 drop spindle question [Re: Big3]  
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Joe87monteSS Offline
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Joe87monteSS  Offline
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Memphis,TN
I just finished my LS1 brakes on a 2 inch drop G dody/S10 spindle. I ordered these parts a while back, and I did have trouble getting a hold of the guy at Flynbye, but he finally came through. I only ordered the hubs and bracket kit from him. I ordered the lines via Kore3, which are excellent people to deal with. I did everything while I was under the front end. Bushings (Del-a-lum), ball joints, springs, shocks, steering linkage, etc.

Don't forget to consider what rotor will fit your wheel size.

Here are a few photos that will not show up on this site for some reason.

https://www.amazon.com/photos/share/XjUaHYsIMSajdNrrEtqwv7hYA0MpoTrQaZ0gfpm61HO


Joey
Engine/head builder/machinist
1987 Monte Carlo SS 383/4 Speed
2004 Silverado
Facebook

#1054218 - 11/04/17 10:26 AM Re: Ls1 drop spindle question [Re: Big3]  
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axld Offline
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lakeland,fl
with my YEAR ONE N90 17'' wheels looks like I have the room to do a 13'' rotor . 2 1/2'' from top of stock rotor with room, wonder if the C5 or C6 calipers will fit? 1 1/2'' from stock caliper to back of wheel clearance. don't want to change the track width but would if it could be done with a thin spacer.


86 SS . Custom Paint. Built 6.0 with LS3 Top End .TSP Custom grind cam. FITECH ecu and harness.TKO 600 5 spd. Quick 9'' / 3.70 Gearing. ZQ8 Spindles. KORE3 12.8'' frt Brake Kit. UMI Rear Adjustable UCA. Rear LCA. UMI Front Chassis Bar. UMI rear shock tower brace. BMR Coil Springs. BMR Rear Sway Bar. N90 17'' Wheels . . SO FAR..............lol.
#1054283 - 11/07/17 04:35 PM Re: Ls1 drop spindle question [Re: Big3]  
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SickSpeedMonte Offline
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MD
These Wilwood hubs?

http://www.wilwood.com/Hubs/HubProd.aspx?itemno=270-11043

"Forged Billet Aluminum Vented Rotor Offset Hubs are made from premium grade alloy billets are forged into shape under high heat and pressure, then CNC machined for precise fit on each spindle application. Intended for use with intermediate adapter plates with vented .81” width rotors, but can also be used with aluminum mounting hats for custom applications. This specific hub is double drilled with a 5 x 4.50" / 5 x 4.75” wheel lug pattern. Hubs include bearing races and screw-on aluminum caps."

So you're saying slip the Vette rotor over the wheel studs? It seems like they are only intended to work with their 2-piece rotors.

Last edited by SickSpeedMonte; 11/07/17 04:47 PM.
#1054285 - 11/07/17 04:48 PM Re: Ls1 drop spindle question [Re: Big3]  
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MC96 Offline
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St. Johns MI
Those are the ones, I just slipped a stoptech C5 rotor over it.

Maybe we can get Ramey to chime in, I was worried about the fact that the holes are bigger than the studs, which meant they wouldnt center quite right (there is no way to locate by the center of the hub) when you tightened down the wheel. I was going to turn some small spacers to keep the rotor true and lug centric.

BUT

@ PRI last year I asked Wilwood and they sent me to Rameys booth, he told me throw a china vette rotor on and be done with it as thats what their Green Machine runs.

Last edited by MC96; 11/07/17 04:48 PM.

86 SS
400SBC, 4l80e, MSD Atomic injection/trans controller, Tilt glass clip, all tubular arms, corvette brakes, 9" rear
In progress
#1054288 - 11/08/17 12:20 AM Re: Ls1 drop spindle question [Re: Big3]  
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Marcus Offline
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Marcus  Offline
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Folks are doing the ZQ8 spindles rather than stock G spindles because the brake mounting format is correct for C5 style brakes and far and away stiffer and stronger than mounting a bracket to a stock G spindle. Then there`s hubs, trying to use cut down rotors is a bad idea, they`re weak gray iron and don`t hold up well without the disc around them. So you`re buying aftermarket hubs that cost just as much or more than a set of used ZQ8 spindles and hub bearing packs. The other advantage is that the bearings in the ZQ8 unit bearing are much larger and have much more load capacity than the tiny stock G body bearings. BTW a great source for brake conversion brackets that hasn`t been mentions here is Kore3.
2" drop spindles vs. non drop spindles...2" drop spindles are decorative and okay for show cars. They are often lower quality material and heat treat so they`re usually a poor choice for serious performance cars anyway. 2" drop spindles do not improve performance, they only alter the appearance and detract from positive caster in the alignment (due to the increased rake). On a platform with completely backward suspension geometry and terrible bump steer it only makes sense IMO that if we`re going to change front end components we may as well change them to something that actually improves the way the car performs and drives. A set of good touring springs will improve cornering and ride quality and depending on brand will lower the front end 1"-1.5" inches. Now correct the suspension geometry and bump steer with a Stage 2-Plus tall ball joint package http://scandc.com/new/node/47 or StreetComp AFX package http://scandc.com/new/node/53 and you drop the front end an additional 3/4"-1" for a total of around 2", which is just where you wanted to be. Run a 2" drop spindle with the same springs and tall ball joint package and you`re at a total drop of around 4", which is show car territory and pretty much undrivable. Of course the huge advantage of dropping the car as part of a geometry / bump steer correction package is that now instead of the car just looking great, it actually DRIVES GREAT! Mark SC&C


--Savitske Classic & Custom--
Cutting edge suspension & brakes
--Author of "How to Make Your Muscle Car Handle"--

www.SCandC.com
sales@scandc.com 610-381-6100
#1054296 - 11/08/17 09:50 AM Re: Ls1 drop spindle question [Re: Big3]  
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axld Offline
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lakeland,fl
Mark,are the ZQ8 blazer spindles? and don't we still have to use a conversion bracket to install the C5 parts? my car has a big gap between the top of tire to fender lip. did 1.5'' stiffer drop springs and I swear it went up! guess factory springs were sagged. So , me hot rodding on my budget, would coil over be a better system to save for? I want to auto cross also.


86 SS . Custom Paint. Built 6.0 with LS3 Top End .TSP Custom grind cam. FITECH ecu and harness.TKO 600 5 spd. Quick 9'' / 3.70 Gearing. ZQ8 Spindles. KORE3 12.8'' frt Brake Kit. UMI Rear Adjustable UCA. Rear LCA. UMI Front Chassis Bar. UMI rear shock tower brace. BMR Coil Springs. BMR Rear Sway Bar. N90 17'' Wheels . . SO FAR..............lol.
#1054320 - 11/09/17 11:06 PM Re: Ls1 drop spindle question [Re: Big3]  
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Marcus Offline
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Marcus  Offline
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axld, yes I was refering to the 2WD Blaser spindles with unit bearings and original dual piston calipers. You do have to use conversion brackets (Kore3, $130) but the brake mounting format is the same as C5/C6, the mounting brackets are big and beefy and everything indexes on flat machined surfaces. You get the bonus of bigger wheels bearings too. As far as springs, you say you have 1.5" drop springs, what brand (most aftermarket springs for Montes are 1", 1.2" or 2" drop)? Or are they Moog springs that are "supposed to be" drop springs when used on a Monte? FYI the quality and dimensions of Moog springs are so poor anymore we refuse to use them and they almost always run very tall these days. Coil overs are a great option to run high spring rates on hardcore auto x and road race cars but when running street spring rates that offer no real advantage over a properly selected set of springs and shocks and they have numerous potential pitfalls. At any rate (no pun intended) the first and biggest step is getting a Monte to handle is to correct the hideous front end geometry and put a good modern performance alignment on it.Without doing this step you`re chasing your own tail and the car will never work really well, just less bad. The best methods for correcting the geometry also lower the car 3/4"-1" so that may take care of your ride height issue without even changing springs. Using parts you already have is really building on a budget! smile What`s more you now have a front end that works like a proper modern car and the handling and drive ability that goes with it. If you`d like more detailed information please feel free to take advantage of our famous Free Suspension Counseling Service @ 610-381-6100.


--Savitske Classic & Custom--
Cutting edge suspension & brakes
--Author of "How to Make Your Muscle Car Handle"--

www.SCandC.com
sales@scandc.com 610-381-6100
#1054330 - 11/10/17 09:22 AM Re: Ls1 drop spindle question [Re: Big3]  
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axld Offline
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axld  Offline
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lakeland,fl
Thanks for the reply . My Springs (and sway bars ) are BMR , just down the road from me. I am trying to do a brake upgrade while planing for suspension also.seems the more I dig into this the more choices /confusing this gets, lol. But I am serious about this so a call may help.


86 SS . Custom Paint. Built 6.0 with LS3 Top End .TSP Custom grind cam. FITECH ecu and harness.TKO 600 5 spd. Quick 9'' / 3.70 Gearing. ZQ8 Spindles. KORE3 12.8'' frt Brake Kit. UMI Rear Adjustable UCA. Rear LCA. UMI Front Chassis Bar. UMI rear shock tower brace. BMR Coil Springs. BMR Rear Sway Bar. N90 17'' Wheels . . SO FAR..............lol.

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