Period Correct Aftermarket Engine Parts
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Car: '87 Trans Am GTA
Engine: L98
Transmission: 700r4
Period Correct Aftermarket Engine Parts
So in my quest to make my L98 more powerful, but still keep it "period correct" I came across this SLP catalog (which I'll post photos of below) from about '89 and have taken an interest in quite a few different parts that were listed. Obviously most of the aforementioned parts are no longer in production and tracking them down may prove to be a royal PITA, as I only have catalog part numbers to go by, which are proving to be not all that useful in my searches. Really the only part I think I've found is the "Cloyes True Roller Matched Timing Chain Set" in the ninth page, which I believe is this Cloyes 9-1100SP set. From what I can tell it's identical to what's pictured, but don't hold me to that. Is there a resource available somewhere to track down old aftermarket modifications, or better yet a place to find near-identical replicas? At the very least it would be extremely helpful to track down the actual part / model numbers to help with my searches. Anyways, everything I'm interested in at least trying to track down are as follows:
- SLP High-Performance L98 TPI Throttle Body (Cat. Part No. 22002, Page 3)
- Bosch 92mm Mass Airflow Sensor (Cat. Part No. 23000, Page 4)
- SLP High-Performance Camshaft (Cat. Part No. 51006, Page 8)
- SLP High-Performance Valve-Train Components (Cat. Part Nos. 53002, 53102, 53110, 53122, Page 9)
- Cloyes "True Roller" Matches Timing Chain Set (Cat. Part No. 53202, Page 9)
- SLP Lock-Up Torque Converter (Cat. Part No. 60100, Page 10)
- Hamburger's Oil Pan (Cat. Part No. 80004, Page 10)
...and here are the catalog pages. I'll include them all for anyone else who may be interested:
Page 1
Page 2
Page 3
Page 4
Page 5
Page 6
- SLP High-Performance L98 TPI Throttle Body (Cat. Part No. 22002, Page 3)
- Bosch 92mm Mass Airflow Sensor (Cat. Part No. 23000, Page 4)
- SLP High-Performance Camshaft (Cat. Part No. 51006, Page 8)
- SLP High-Performance Valve-Train Components (Cat. Part Nos. 53002, 53102, 53110, 53122, Page 9)
- Cloyes "True Roller" Matches Timing Chain Set (Cat. Part No. 53202, Page 9)
- SLP Lock-Up Torque Converter (Cat. Part No. 60100, Page 10)
- Hamburger's Oil Pan (Cat. Part No. 80004, Page 10)
...and here are the catalog pages. I'll include them all for anyone else who may be interested:
Page 1
Page 2
Page 3
Page 4
Page 5
Page 6
Last edited by Ryan-87GTA; 04-10-2019 at 07:18 PM.
#2
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Re: Period Correct Aftermarket Engine Parts
...and the remaining six pages:
Page 7
Page 8
Page 9
Page 10
Page 11
Page 12
Page 7
Page 8
Page 9
Page 10
Page 11
Page 12
#3
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Re: Period Correct Aftermarket Engine Parts
This was covered already in this post.
https://www.thirdgen.org/forums/alte...d-gen-slp.html
Any parts inquiry you might pick @TTOP350 brain.
If your looking to track down a memcal don’t waste your effort there tunes suck.
https://www.thirdgen.org/forums/alte...d-gen-slp.html
Any parts inquiry you might pick @TTOP350 brain.
If your looking to track down a memcal don’t waste your effort there tunes suck.
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Re: Period Correct Aftermarket Engine Parts
Supposedly the L98 I bought has an SLP cam. When I tear it down soon I'm going to check it out and decide if I'm going to use it or not. Probably wont, I will let you know if it checks out and you are interested. Engine had SLP runners and a sticker under the hood with some SLP info..
#5
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Re: Period Correct Aftermarket Engine Parts
It's a bit funny SLP has a paragraph in there saying a throttlebody airfoil is pretty much useless. Not that they're wrong, but it's funny and maybe a bit ironic that SLP has discontinued damn near everything in that catalog, but they still sell their throttlebody airfoil... Oops.. I mean "flow booster".
http://www.slponline.com/product/221...w-Booster.html
I don't know... I have a certain appreciation for some of the stuff SLP developed and sold. Their headers were functional and didn't have a lot of the drawbacks of other thirdgen headers from other companies. The visible parts that were used on the Firehawk have a certain something about them. Beyond that, their CAI systems are/were by and large overpriced, cheap and corny. The Siamese runners never seemed to make any TPI car go any faster. I can't imagine that a person couldn't do better than their cams, chips, and other bits in modern times. Of course it's all a bit moot anyway since SLP dumped their entire line of thirdgen products in favor of offering products for Corvettes, SUVs, Mustangs, and Mopars. If they think there's more value in offering exhaust systems for garbage like the Chevy Sonic or a Grand Prix than supporting the thirdgen market, I guess they can go fornicate themselves.
http://www.slponline.com/product/221...w-Booster.html
I don't know... I have a certain appreciation for some of the stuff SLP developed and sold. Their headers were functional and didn't have a lot of the drawbacks of other thirdgen headers from other companies. The visible parts that were used on the Firehawk have a certain something about them. Beyond that, their CAI systems are/were by and large overpriced, cheap and corny. The Siamese runners never seemed to make any TPI car go any faster. I can't imagine that a person couldn't do better than their cams, chips, and other bits in modern times. Of course it's all a bit moot anyway since SLP dumped their entire line of thirdgen products in favor of offering products for Corvettes, SUVs, Mustangs, and Mopars. If they think there's more value in offering exhaust systems for garbage like the Chevy Sonic or a Grand Prix than supporting the thirdgen market, I guess they can go fornicate themselves.
#6
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Engine: LB9. Dual Cats. Big Cam
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Re: Period Correct Aftermarket Engine Parts
It's a bit funny SLP has a paragraph in there saying a throttlebody airfoil is pretty much useless. Not that they're wrong, but it's funny and maybe a bit ironic that SLP has discontinued damn near everything in that catalog, but they still sell their throttlebody airfoil... Oops.. I mean "flow booster".
http://www.slponline.com/product/221...w-Booster.html
I don't know... I have a certain appreciation for some of the stuff SLP developed and sold. Their headers were functional and didn't have a lot of the drawbacks of other thirdgen headers from other companies. The visible parts that were used on the Firehawk have a certain something about them. Beyond that, their CAI systems are/were by and large overpriced, cheap and corny. The Siamese runners never seemed to make any TPI car go any faster. I can't imagine that a person couldn't do better than their cams, chips, and other bits in modern times. Of course it's all a bit moot anyway since SLP dumped their entire line of thirdgen products in favor of offering products for Corvettes, SUVs, Mustangs, and Mopars. If they think there's more value in offering exhaust systems for garbage like the Chevy Sonic or a Grand Prix than supporting the thirdgen market, I guess they can go fornicate themselves.
http://www.slponline.com/product/221...w-Booster.html
I don't know... I have a certain appreciation for some of the stuff SLP developed and sold. Their headers were functional and didn't have a lot of the drawbacks of other thirdgen headers from other companies. The visible parts that were used on the Firehawk have a certain something about them. Beyond that, their CAI systems are/were by and large overpriced, cheap and corny. The Siamese runners never seemed to make any TPI car go any faster. I can't imagine that a person couldn't do better than their cams, chips, and other bits in modern times. Of course it's all a bit moot anyway since SLP dumped their entire line of thirdgen products in favor of offering products for Corvettes, SUVs, Mustangs, and Mopars. If they think there's more value in offering exhaust systems for garbage like the Chevy Sonic or a Grand Prix than supporting the thirdgen market, I guess they can go fornicate themselves.
Odd about SLP's "Advisory" on the airfoil as well. I'll admit to having an airfoil on almost every TPI I've ever owned. Do I believe the ridiculous claims by various manufacturers of 12 or 14 horsepower or whatever? Of course not. But they are so easy and so cheap and I usually have a spare one in my tool box, so why not. I'll take the .5 - 1 horsepower.
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Re: Period Correct Aftermarket Engine Parts
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#8
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Re: Period Correct Aftermarket Engine Parts
Supposedly the L98 I bought has an SLP cam. When I tear it down soon I'm going to check it out and decide if I'm going to use it or not. Probably wont, I will let you know if it checks out and you are interested. Engine had SLP runners and a sticker under the hood with some SLP info..
It's a bit funny SLP has a paragraph in there saying a throttlebody airfoil is pretty much useless. Not that they're wrong, but it's funny and maybe a bit ironic that SLP has discontinued damn near everything in that catalog, but they still sell their throttlebody airfoil... Oops.. I mean "flow booster".
http://www.slponline.com/product/221...w-Booster.html
I don't know... I have a certain appreciation for some of the stuff SLP developed and sold. Their headers were functional and didn't have a lot of the drawbacks of other thirdgen headers from other companies. The visible parts that were used on the Firehawk have a certain something about them. Beyond that, their CAI systems are/were by and large overpriced, cheap and corny. The Siamese runners never seemed to make any TPI car go any faster. I can't imagine that a person couldn't do better than their cams, chips, and other bits in modern times. Of course it's all a bit moot anyway since SLP dumped their entire line of thirdgen products in favor of offering products for Corvettes, SUVs, Mustangs, and Mopars. If they think there's more value in offering exhaust systems for garbage like the Chevy Sonic or a Grand Prix than supporting the thirdgen market, I guess they can go fornicate themselves.
http://www.slponline.com/product/221...w-Booster.html
I don't know... I have a certain appreciation for some of the stuff SLP developed and sold. Their headers were functional and didn't have a lot of the drawbacks of other thirdgen headers from other companies. The visible parts that were used on the Firehawk have a certain something about them. Beyond that, their CAI systems are/were by and large overpriced, cheap and corny. The Siamese runners never seemed to make any TPI car go any faster. I can't imagine that a person couldn't do better than their cams, chips, and other bits in modern times. Of course it's all a bit moot anyway since SLP dumped their entire line of thirdgen products in favor of offering products for Corvettes, SUVs, Mustangs, and Mopars. If they think there's more value in offering exhaust systems for garbage like the Chevy Sonic or a Grand Prix than supporting the thirdgen market, I guess they can go fornicate themselves.
#9
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Re: Period Correct Aftermarket Engine Parts
It's tempting to send a link to this discussion to SLP customer service. If these cars continue to gain following, now is the time to re-launch some of this stuff. For example, I assume/hope Dyno Don has made a killing selling quality headers in their absence. Would be cool if they could bring some of it back....
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Re: Period Correct Aftermarket Engine Parts
It's tempting to send a link to this discussion to SLP customer service. If these cars continue to gain following, now is the time to re-launch some of this stuff. For example, I assume/hope Dyno Don has made a killing selling quality headers in their absence. Would be cool if they could bring some of it back....
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Re: Period Correct Aftermarket Engine Parts
It's tempting to send a link to this discussion to SLP customer service. If these cars continue to gain following, now is the time to re-launch some of this stuff. For example, I assume/hope Dyno Don has made a killing selling quality headers in their absence. Would be cool if they could bring some of it back....
#14
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Re: Period Correct Aftermarket Engine Parts
I've called SLP in the past. They simply don't care and they don't even want to talk about it. They are so vehemently against 3rd gen parts it makes no sense. It's like there is a backstory somewhere which we are not aware of. Like the government or mafia or someone paid a visit and said, "if you like your kneecaps, you'll forget all about 3rd gens".
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Re: Period Correct Aftermarket Engine Parts
They did sell off a lot of the old inventory through summit at discounted prices.
A lot of the molds and info were supposedly lost in the big fire.
Hate to say it but the cost of bringing the parts back would be sky high, I'm sure a few people would buy them buuuut I doubt it would be a sales winner for them.
A lot of the molds and info were supposedly lost in the big fire.
Hate to say it but the cost of bringing the parts back would be sky high, I'm sure a few people would buy them buuuut I doubt it would be a sales winner for them.
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Re: Period Correct Aftermarket Engine Parts
Thanks
You Like Dustin?? Maybe SOMEDAY I'll finally put them on my "project" car!!
They all cleaned up so darn nice too!!
You Like Dustin?? Maybe SOMEDAY I'll finally put them on my "project" car!!
They all cleaned up so darn nice too!!
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Re: Period Correct Aftermarket Engine Parts
Havent even began to take my engine apart Bob and have had the rebuild kit for months. Supposedely has an SLP cam.. we shall soon see. Hope to freshen it up and drop her in my Bird around July when it gets too hot for carshows.
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