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HSR install issues center bolt holes...

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Old May 19, 2006 | 07:49 PM
  #1  
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HSR install issues center bolt holes...

OK, I got the intake, and was going to use the old style heads untill I saw that they were missing several of the bolt bosses for the serp set up.

So I put the stock L98 heads on to find the 4 center bolts are at different angles. I know holley makes the adapter kit, but I am really not wanting to spend some 70 bucks (delivered) for this.

So the question is who has had this same issue and what did you do to solve it on the cheap...
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Old May 19, 2006 | 09:29 PM
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From: SALEM, NH
Car: '88 Formula
Engine: LC9
Transmission: 4L60E
Axle/Gears: 3.89 9"
Originally Posted by V6sucker
OK, I got the intake, and was going to use the old style heads untill I saw that they were missing several of the bolt bosses for the serp set up.

So I put the stock L98 heads on to find the 4 center bolts are at different angles. I know holley makes the adapter kit, but I am really not wanting to spend some 70 bucks (delivered) for this.

So the question is who has had this same issue and what did you do to solve it on the cheap...
The HSR isn't slotted for both patterns?? You gotta be kidding me.

-- Joe
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Old May 19, 2006 | 10:48 PM
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Originally Posted by anesthes
The HSR isn't slotted for both patterns?? You gotta be kidding me.

-- Joe
slotted yes.
But the 4 center head bolts are at a different angle than the intake.

Meaning the front and rear four tighten down like normal but the center four do not.
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Old May 20, 2006 | 05:57 AM
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From: SALEM, NH
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Axle/Gears: 3.89 9"
Originally Posted by V6sucker
slotted yes.
But the 4 center head bolts are at a different angle than the intake.

Meaning the front and rear four tighten down like normal but the center four do not.
as long as the intake is slotted, it will tighten down fine.. well, that is unless they didn't machine the slot at two different angles. then again, when I converted mine, I didnt machine the slot at two angles and it still worked fine, with 12psi boost.

-- Joe
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Old May 20, 2006 | 11:44 PM
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From: Louisville, Ky
Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
You need angled spacers (washers) for the center bolts....head to stealthram.com for more info.

But to fix the problem just drill the intake to the required angle.
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Old May 21, 2006 | 08:12 PM
  #6  
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Car: '90 C1500
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Yep...only for a pre-86 head do you not need these spacers but the for everything else...you will need those washers.
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Old May 22, 2006 | 09:45 PM
  #7  
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Originally Posted by YenkoST
Yep...only for a pre-86 head do you not need these spacers but the for everything else...you will need those washers.
I was just looking for a cheaper alternative than 70 something for those spacers that I am sure are marked up some 5X.XX bucks...

anyway I am hoping to fire it up this week!
After nearly 2 weeks of swapping engine (went to a 383) / trans (swapped input shafts with kevlar banded one and 2K stall) tearing down and rebuilding trans... tearing down engine and swapping heads because the pre 86 heads I have did not have a few of the serp bosses drilled... and I did not feel like dealing with that...

But I got most of it back togeather now. Just have to have the drivers side serp. bracket repaired then I can finish the engine/radiator stuff.
I some how lost the factory rubber lines off the frame rail hard lines so I had to buy some of those.
I got the air tubes cut off the 2055's today, will weld them up tomarrow.
Then I need to get the driveshaft back in, and the bulk of the magnaflow cat back up and take it and have the extension tubes made/installed.

I axed the stock water/oil cooler... it was way to big a PITA to remove, was in the way constantly so it is gone. I will install a sandwich adapter and a real one later.

I think I only have one thing I actually need to order and that is a 180 fitting from the pressure regulator... I had bought 2 90's but soon realized one needs to be a 180...

Now just need to put togeather the aldl cable, and get that zif socket in the ECM so I can start tuning with the HSR... Yes I am gonna stay pure maf right now, but gonna do the 749 map conversion soon.

Last edited by V6sucker; May 22, 2006 at 09:57 PM.
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Old May 22, 2006 | 10:04 PM
  #8  
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From: Browns Town
Car: 86 Monte SS (730,$8D,G3,AP,4K,S_V4)
Engine: 406 Hyd Roller 236/242
Transmission: 700R4 HomeBrew, 2.4K stall
Axle/Gears: 3:73 Posi, 7.5 Soon to break
Take a look here.
https://www.thirdgen.org/forums/tech...ghlight=washer

I couldn't get them to fit with the TPI but they may work with the open base on the HSR.
The're cheap and the angle was about perfect on them.
There's a couple other suggestions there too.
Good luck with it.
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Old May 22, 2006 | 10:57 PM
  #9  
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From: Louisville, Ky
Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
I got my angled spacers for $12 shipped to me from someone over at Stealthram.com

You wanna help me build my ALDL cable??? I've been all over these boards trying to make sense of the schematics but I just can't for some reason.
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Old May 22, 2006 | 11:53 PM
  #10  
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Originally Posted by CamarosRUS
I got my angled spacers for $12 shipped to me from someone over at Stealthram.com

You wanna help me build my ALDL cable??? I've been all over these boards trying to make sense of the schematics but I just can't for some reason.
no prob after I find a valid diagram.

I am also making one for the 165 maf though...
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Old May 23, 2006 | 12:03 AM
  #11  
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From: Louisville, Ky
Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
true. i think i might just fork out the extra money and buy one.
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Old May 23, 2006 | 12:10 AM
  #12  
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From: Louisville, Ky
Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
BTW...check this thread out V6. Might try getting ahold of that guy, he might possibly have a set left or know where to get more cheap. They aren't bad looking, I'm running them w/out problems. $12 shipped to me (I'm Pearl Z on there).

Stealthram.com :: View topic - Beveled washers and bolts...
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Old May 23, 2006 | 11:57 AM
  #13  
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Originally Posted by CamarosRUS
BTW...check this thread out V6. Might try getting ahold of that guy, he might possibly have a set left or know where to get more cheap. They aren't bad looking, I'm running them w/out problems. $12 shipped to me (I'm Pearl Z on there).

Stealthram.com :: View topic - Beveled washers and bolts...
I have been tring to register at that site for a month now... still not getting a reply to join...
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Old May 23, 2006 | 12:25 PM
  #14  
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From: Louisville, Ky
Car: 1991 Z28
Engine: 383
Transmission: T-5
Axle/Gears: 3.08 10 Bolt
Hmmmmm.....well I know how that is. Its like that for me for a couple sites that I'd like to join as well.

Email rhinton@stealthram.com ...hes the site administrator over there and see what he says.
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Old May 27, 2006 | 07:37 AM
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Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Save yourself a penny, go to McMaster Carrs website and look for bevelled washers, I paid $2.87 with tax for 8 of them at the time. Very cheap, perfect for what i needed.
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Old May 27, 2006 | 07:01 PM
  #16  
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Originally Posted by Thirdgen89GTA
Save yourself a penny, go to McMaster Carrs website and look for bevelled washers, I paid $2.87 with tax for 8 of them at the time. Very cheap, perfect for what i needed.
that is exactly what I did.
I went ahead and ordered 3 (5 piece) packs @ $5.xx, and got them the other day.
Worked great after I got the 1.5" long bolts. 2 spacers per bolt.

So for under $20 I got what I needed. Screw holley and thier inflated BS!
MU HAHAHAHAHA

But as an update to the car, got the headers (2055's) mounted up today.
Got the new serp belt on, did the air delete.
still waiting on 1 180 degree fitting from summit but other than that I think I have everything...
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Old Jun 11, 2006 | 11:04 AM
  #17  
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From: orlando, fl usa
Car: 1986 pontiac TA
Engine: 360 HSR
Transmission: 700r4 3300 yank converter
Axle/Gears: 3.27 9 bolt
Originally Posted by V6sucker
I have been tring to register at that site for a month now... still not getting a reply to join...
what's your board name? have you received your activation email? look in your spam folder.
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Old Jun 11, 2006 | 07:11 PM
  #18  
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Originally Posted by mrr23
what's your board name? have you received your activation email? look in your spam folder.
I got your email earlier today and got it sorted.
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Old Jun 11, 2006 | 07:49 PM
  #19  
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From: orlando, fl usa
Car: 1986 pontiac TA
Engine: 360 HSR
Transmission: 700r4 3300 yank converter
Axle/Gears: 3.27 9 bolt
good deal. made a change to my admin section and found a bunch of people that hadn't activated their account.
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Old Jun 27, 2006 | 05:52 PM
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Car: 1989 GTA
Engine: 5.7 TPI
Transmission: A4
Axle/Gears: 3.23
Originally Posted by Thirdgen89GTA
Save yourself a penny, go to McMaster Carrs website and look for bevelled washers, I paid $2.87 with tax for 8 of them at the time. Very cheap, perfect for what i needed.
Do you happen to have a part number for those?
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Old Jun 27, 2006 | 11:56 PM
  #21  
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From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
http://www.mcmaster.com/

Part# 92810A120

I had to drill out the holes a little larger. Also, the bevel isn't the perfect angle however the aluminum is soft enough that it will conform for an even clamping pressure.

Only $2.47 for 5, and you only need 4.
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Old Jun 28, 2006 | 07:26 AM
  #22  
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From: Abilene, TX
Car: 1989 GTA
Engine: 5.7 TPI
Transmission: A4
Axle/Gears: 3.23
Originally Posted by Thirdgen89GTA
http://www.mcmaster.com/

Part# 92810A120

I had to drill out the holes a little larger. Also, the bevel isn't the perfect angle however the aluminum is soft enough that it will conform for an even clamping pressure.

Only $2.47 for 5, and you only need 4.
Thank you Sir, I do appreciate it!
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Old Jun 28, 2006 | 01:59 PM
  #23  
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From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Actually, I may have been wrong. Are the bolts for a stock TPI 3/8" or 5/16"?

Can't remember and I don't have one to measure.

Measure the stock diameter of your bolts, it's either the 3/8" beveled washer, or the 5/16" beveled washer.

It might be this part # instead: (3/8" alu beveled washer) 92810A130
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Old Jun 30, 2006 | 05:09 PM
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From: Upland Pa
Car: Camaro Vert
Engine: 355 HSR
Transmission: A4
Axle/Gears: 3.73 S60
Here is what I used..
McMaster-Carr
Attached Thumbnails HSR install issues center bolt holes...-wedgesinstalled.jpg  
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Old Jun 30, 2006 | 11:07 PM
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Car: 89 vet
Engine: v8
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Originally Posted by YenkoST
Yep...only for a pre-86 head do you not need these spacers but the for everything else...you will need those washers.

FYI
I installed a stealth ram on my dads 90 vet(w/ custom plenum) wedge washers were not needed.

ED89
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Old Jul 1, 2006 | 08:31 AM
  #26  
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From: Chicagoland Suburbs
Car: 1989 Trans Am GTA
Engine: LT1, AFR 195cc, 231/239 LE cam.
Transmission: M28 T56
Axle/Gears: 3.23 10bolt waiting to explode.
Originally Posted by Kat
Here is what I used..
McMaster-Carr
Yep, thats a pic of the same beveled washers I used. Only difference is that i used the stock torx head bolt. Cheapest way to fix the issue.
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Old Jul 1, 2006 | 10:34 AM
  #27  
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From: Upland Pa
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Engine: 355 HSR
Transmission: A4
Axle/Gears: 3.73 S60
Originally Posted by Thirdgen89GTA
Yep, thats a pic of the same beveled washers I used. Only difference is that i used the stock torx head bolt. Cheapest way to fix the issue.
Yup, iirc I think it was your post from a while back I got the info from.
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