SLP Runners Came... and going BACK!
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Joined: Feb 2000
Posts: 1,170
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From: Seattle, Washington
Car: '87 IROC-Z/'82 RX7
Engine: SBC 355/1.1L Rotary
Transmission: T56/5 Speed
Axle/Gears: 4.33/3.93
SLP Runners Came... and going BACK!
Got my TPI SLP Runners today. VERY unhappy. The port openings aren't even round, there are huge amounts of cast mountains, and on one of the tubes on the inside, it looks like someone had a hole, and JBWELDED the thing closed. And the gaskets fit horrible. See pics.
Just letting you all know about my findings.
Just letting you all know about my findings.
Thread Starter
Supreme Member

Joined: Feb 2000
Posts: 1,170
Likes: 0
From: Seattle, Washington
Car: '87 IROC-Z/'82 RX7
Engine: SBC 355/1.1L Rotary
Transmission: T56/5 Speed
Axle/Gears: 4.33/3.93
Quote "Precision Machined for a perfect fit." Okay so maybe it will bolt on, but that's some nasty circlulage.
Thread Starter
Supreme Member

Joined: Feb 2000
Posts: 1,170
Likes: 0
From: Seattle, Washington
Car: '87 IROC-Z/'82 RX7
Engine: SBC 355/1.1L Rotary
Transmission: T56/5 Speed
Axle/Gears: 4.33/3.93
Should I have kept them, there would be some massive "Gasket Matching" eh?
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Joined: Jan 2001
Posts: 1,746
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From: Tucson, AZ
Car: 1991 Z-28
Engine: Can you say stroke?!?!
Transmission: 700-r4
Axle/Gears: 3.42
Damn, that sucks. I would have figured that they would be in better shape than that, especially since they're brand new.
Member
Joined: Jul 1999
Posts: 476
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From: Vancouver, Canada
Car: 1992 Z28 1LE
Engine: 350
Transmission: T5
unbelievable.... the USED Accel runners I had looked better.
I guess that just goes to show just how much care really goes into these "quality" pieces. The only thing from SLP that I'll be buying are their 1 3/4" headers (later on when/if the engine makes more power).
Look on the bright side.. you can get your money back, and then consider saving up for an HSR
! Yea... I think it must be a sign
I guess that just goes to show just how much care really goes into these "quality" pieces. The only thing from SLP that I'll be buying are their 1 3/4" headers (later on when/if the engine makes more power).
Look on the bright side.. you can get your money back, and then consider saving up for an HSR
! Yea... I think it must be a sign
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Thread Starter
Supreme Member

Joined: Feb 2000
Posts: 1,170
Likes: 0
From: Seattle, Washington
Car: '87 IROC-Z/'82 RX7
Engine: SBC 355/1.1L Rotary
Transmission: T56/5 Speed
Axle/Gears: 4.33/3.93
I don't know WHAT they have there, but I just ported my base, and ground off that lip that the stock ::: cough ::: smooth ::: cough ::: runners have on em... and use the 259.95 for subframes and LCA relocation brackets.
Psh... precision machined my butt.
Psh... precision machined my butt.
Joined: Mar 2001
Posts: 10,437
Likes: 2,093
Car: '89 Firebird
Engine: 7.0L
Transmission: T56
I would guess that their purchasing department has more say over engineering. Wouldn't surpise me if they have changed parts suppliers at some time and gone for a low cost provider. They'll get in return what they provide.
Those actually came from SLP? Mine looked nothing like that. Yes, there is a bit of gasket matching, but that's easy. It'd also be very easy to fix the ports...but it looks like there's more wrong with them then just shape and roughness.
Supreme Member
Joined: Feb 2000
Posts: 3,145
Likes: 1
From: Kemptville, Ontario, Canada
Car: 1992 Z28
Engine: 355
Transmission: 700R4
Those have a nasty case of core shift. I expect the tooling is breaking down and they don't want to replace it. The set I bought 3 years ago were bad but not that bad.
Last edited by Acceld Z; Apr 1, 2003 at 01:07 AM.
Supreme Member
Joined: Feb 2000
Posts: 3,145
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From: Kemptville, Ontario, Canada
Car: 1992 Z28
Engine: 355
Transmission: 700R4
Originally posted by JAKEDPLAYA
THOSE WOULD HAVE MADE IT THROUGH THE QC DEP. AT MY MACHINE SHOP....LOL
AND WHAT IS "CORE SHIFT" AND WHAT KINDA "TOOLING" DO THEY USE AT A FOUNDRY??RUNNERS HAVE A CAST FINISH
THOSE WOULD HAVE MADE IT THROUGH THE QC DEP. AT MY MACHINE SHOP....LOL
AND WHAT IS "CORE SHIFT" AND WHAT KINDA "TOOLING" DO THEY USE AT A FOUNDRY??RUNNERS HAVE A CAST FINISH
those runners looks like crap...
lately ive been finding that SLPs quality has been goin down hill. Me and my friend jus ordered some 1 3/4" headers from them and the flange part was crooked where the headers would bolt up to the head. i thought we get what we pay for
mother****ers!!!
lately ive been finding that SLPs quality has been goin down hill. Me and my friend jus ordered some 1 3/4" headers from them and the flange part was crooked where the headers would bolt up to the head. i thought we get what we pay for
mother****ers!!! Supreme Member
Joined: Jan 2001
Posts: 1,609
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From: www.thirdgentech.com
Car: 2004 GTO
Engine: LS1
Transmission: T-56
SLP has really been ignoring the thirdgen cars. Do they realise that these cars are becoming incredibly cheap and people will always want go-fast parts for them?
SLP= Only cares about the money
SLP= Only cares about the money
There is no reason to buy anything from SLP. The runners are the only piece that is priced less than the competition and now a days they are total crap, proven. Most of the other parts are just priced to high and equivalents are available from other manufacturers.
Twilightoptics
What year runners do you need? I have a set of 85-88 runners that are sitting on a shelf. I bought them in early 1997 installed them and then my car sat stored from Aug 1998 until 4 months ago when the motor was pulled and the TPI was replaced with a Superram. The runners are nice inside with minimal flash. Make me an offer if interested.
Twilightoptics
What year runners do you need? I have a set of 85-88 runners that are sitting on a shelf. I bought them in early 1997 installed them and then my car sat stored from Aug 1998 until 4 months ago when the motor was pulled and the TPI was replaced with a Superram. The runners are nice inside with minimal flash. Make me an offer if interested.
SLP makes some VERY crappy parts IMO. They have **** for quality and HITHERE think those runners look good compared to how mine came. HITHERE'm never going to buy anything for SLP again. HITHERE was goignt HITHERE get some headers but for over $200 more than other headers the 1 3/4 aren't worth it at all. You could get something else that would add more power than stepping up from 1 5/8 to 3/4.
Josh
Josh
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
My SLP runners didn't mate terribly well with the gaskets, but it was nothing that a die grinder didn't fix. There's a reason they cost 1/2 of what all the others cost. A couple hours with a die grinder gets you runners that flow as well as any other brand at half the price. I guess it just depends on whether you want to get your hands dirty in exchange for lower costs.
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Posts: 4,627
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From: Houston Area
Car: Faster
Engine: Than
Transmission: You!
The openings on mine looked pretty crappy from the factory, but I port matched my runners and plenum to the TPIS big mouth plenum/runner gaskets, then I smoothed everything out as far in as I could reach. The results were WELL worth it!
Just my $.02
Mike (1bad91Z)
Just my $.02
Mike (1bad91Z)
Originally posted by Jim85IROC
My SLP runners didn't mate terribly well with the gaskets, but it was nothing that a die grinder didn't fix. There's a reason they cost 1/2 of what all the others cost. A couple hours with a die grinder gets you runners that flow as well as any other brand at half the price. I guess it just depends on whether you want to get your hands dirty in exchange for lower costs.
My SLP runners didn't mate terribly well with the gaskets, but it was nothing that a die grinder didn't fix. There's a reason they cost 1/2 of what all the others cost. A couple hours with a die grinder gets you runners that flow as well as any other brand at half the price. I guess it just depends on whether you want to get your hands dirty in exchange for lower costs.
Thread Starter
Supreme Member

Joined: Feb 2000
Posts: 1,170
Likes: 0
From: Seattle, Washington
Car: '87 IROC-Z/'82 RX7
Engine: SBC 355/1.1L Rotary
Transmission: T56/5 Speed
Axle/Gears: 4.33/3.93
Like I said, if it was just the port matching I'd live with it... but it was like someone patched a hole, and tried to grind it down! It's worse than slipping by QC, it's knowing it's there and trying to pull a fast onE!
Member
Joined: Jul 1999
Posts: 292
Likes: 0
Car: 89 Formula 350
Engine: 360 / HSR
Transmission: T56
Axle/Gears: 3.27
Originally posted by Jim85IROC
A couple hours with a die grinder gets you runners that flow as well as any other brand at half the price. I guess it just depends on whether you want to get your hands dirty in exchange for lower costs.
A couple hours with a die grinder gets you runners that flow as well as any other brand at half the price. I guess it just depends on whether you want to get your hands dirty in exchange for lower costs.
It would be nice if SLP paid more attention to the parts they make for the cars that got their company started.
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Joined: Jul 1999
Posts: 700
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From: Pineville, NC US
Car: An '87 Italian Retard Out Cruisin'
Engine: LS1 install in progress
Transmission: 4L60e
Axle/Gears: 9 bolt
No surprise to me. Thats why I bought AS&M runners. My Slp headers were also like that plus the flanges were twisted and when I called SLP told me they were supposed to be like that, whatever
. And for those that say no big deal, use a die grinder, screw that. What Benny said. Time is money. And for all the other problems I have had with them, Slp can kiss my white A$$. Send them back.
. And for those that say no big deal, use a die grinder, screw that. What Benny said. Time is money. And for all the other problems I have had with them, Slp can kiss my white A$$. Send them back. Last edited by john5.7 87Iroc; Apr 5, 2003 at 10:18 PM.
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From: SE Michigan
Car: Bright Red 91 GTA
Engine: CARBED LT4
Transmission: MK6
yea the 91-92 firehawks really got the company started...it almost bankrupted them
but they are secure for now....maybe we should get a thread goin about how unhappy us thirgdgen owners are about there products lately....
but also like jim said, theres a reason there cheaper..bolt them on and youll see gains over stock..but port match them and the gains will be more significant
i dunno i still wouldnt be happy with them even for cheaper
but they are secure for now....maybe we should get a thread goin about how unhappy us thirgdgen owners are about there products lately....
but also like jim said, theres a reason there cheaper..bolt them on and youll see gains over stock..but port match them and the gains will be more significant
i dunno i still wouldnt be happy with them even for cheaper
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Joined: Apr 2003
Posts: 189
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From: houston
Car: 89 formula 350
Engine: 402 CI ls2 with tvs1900
Transmission: t56
IF YOUR INTERESTED I AM SELLING USED AS&M LARGE TUBE RUNNERS, PORTED PLENUM AND INTAKE DONE BY AS&M. THEY CAME OFF MY 89 350. 435.00 INCLUDES UPS GROUND SHIPPING
Why send them back just port match them.
Some pictures of my SLP runners.
https://www.thirdgen.org/techbb2/sho...hreadid=173031
Jerry
Some pictures of my SLP runners.
https://www.thirdgen.org/techbb2/sho...hreadid=173031
Jerry
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Joined: Jul 1999
Posts: 13,579
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From: Readsboro, VT
Car: 85 IROC-Z / 88 GTA
Engine: 403 LSx (Pending) / 355 Tuned Port
Transmission: T56 Magnum (Pending) / T5
Axle/Gears: 3.42 / ?
I guess everybody has different priorities. I'll be snowmobiling in hell before I cough up $400+ for a damned pair of runners... especially considering I can get a complete stealth ram setup for a few bucks more. Time is money for some, but for me money is money, and the more I save the better. When everything else on my motor is so good that my runners become my biggest restriction, I'll change my point of view.
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