No one

IIRC might have been Accel/Lingenfelter

 

I do remember them, Lingenfelter and Summit sold them. They were a good header from what I remember. Had a buddy put them on his '92 GTA back in the day, they were nice.

 

Thanks
Been doing some more searching and most say they are good

 

They were VERY GOOD.

They were Accel brand, which SUMMIT picked-up the line. So did others. But then the parts were discontinued. Probably in the late 90s.

The weak link as I recall, was the crossover under the oil pan. On mine, I made a skid plate, which helped.

 

 

Do you have a picture of them ???

 

 

Drivers side

 

 

 

Before they rot, I'd remove them and coat them, inside and out...

 

What method would you recommend?
They are welded to the Cats.
Car is driven only in the summer and not when it's raining.

 

Those sure look 100% like SLP tri-Y headers. SLPs are stainless but its a low grade stainless and they do have some carbon in them so they will rust.
Try to wire wheel a rusty spot and see what it looks like.
The only way to do the welded on Ypipe, that I know of, is to cut it off at the welds, coat and re-weld.

FYI, the gaskets are no longer made so you'll have that to deal with when bolting the headers back to the Y pipe.

 

Mine are defiantly Accel headers,I have the install receipt.
The shop that did the install was Accel authorized installation shop.
They are aluminum coated.
I have the SLP cat. back on the car.

TTop350 are those for the dual cats?
If so are they For sale?

 

A lot of places sell other companies parts under their own name. Now could it be SLP bought the exclusive rights to sell them, sure but it could be Accel/summit was selling SLP parts under their name too. Maybe thats why we can't find any info on Accel tri-Y headers? (I've looked a bit too)
I know SLP started selling these tri-Ys around 1987 and they went through a few changes. Not sure if/when Accel started?
I know SLP used some accel wire products before going to taylor wires.
Your headers look like a jet-hot coating to me, (which your install falls in the time SLP was offering jethot coating) have a few friends that the coating did just that, poor prep and rusted under the coating.
IIRC, The old aluminum coatings had a rough texture.

Those are a pic from the web. I do have 2 NOS sets of early SLP tri-Ys for dual cats but are planned to go on cars soon.

 

Made a quick phone call to accel, the reps catalog only went back to 1994 but he did say that accel has never offered headers???
Def need to add this to my future research.

I did just find this. I do know Lingenfelter did use SLP headers on his early stuff.

https://www.thirdgen.org/forums/exha...ave-accel.html

 

Around 1992, Accel began to sell those parts, as I recall.

 

Accel did have 3rd gen headers back then along with the much more popular C4 design. Most of the Accel catalog was Lingenfelter stuff mass marketed through a larger company.

 

Anyone have a 1990 Accel catalog or 1990 Lingenfelter catalog?

 

I'm looking at a 1991 catalog from Accel. Tri-Y with 1-5/8" primaries with 3" collectors. Mandrel bent 14 gauge steel with air fittings and O2 bungs standard.



82-91 single cat #74400
82-91 dual car #74401


There is only a pic of a C4 system on the page.

 

Awesome! Have a way to scan that ?

 

 

Work was done in 11/94

 

T

 

 

Found these while looking Accel catalog

 

Since there is very little info on these headers, Id thought I share some pictures of these NOS Accel/Lingenfelter Tri-Y headers I purchased awhile back.

 

Wow
Never thought I'd see another set.
Pulled mine and dropped it off at the ceramic coating yesterday.

The finish isn't very good on them,mine only had 3K miles but many years sitting in the garage.

Glad you posted the pictures.
When I pulled them I found that the gaskets were leaking bad where they bolt to the heads.
That is the wrong gasket they supplied.
I thought the installer used the wrong ones,very surprised to find out they were sold with the wrong ones.
The headers are round ports and the gaskets are for square ports.

 

 

Veeeery very cool.. Are there any instructions with them? If so, any chance of getting some scans of them?

 

 

What are your plans for them?

 

 

They need to be brought back into production because they have bigger tubing and Ypipe than SLPs

 

I remember speaking to Bruce @ Hawks years ago when i was in the market for Tri-Y headers, and he mentinoned about have having them reporoduced through American Racing Headers. I wonder if any progress was ever made.

 

I was txting him the other day, there are a few ideas that may move forward soon.

 

Those are a good looking design. Would be great to have that extra option out there.

 

 

 

 

Good looking design! I would "assume" they would make better low end torque than a true shorty?

Was any magazine testing ever done? Any direct comparison to other designs?

 

 

 

 

I wouldn't think it would be to hard to bring these back into production...

 

Dougs91Z and Big Block 73 thank you for all the pics especially these:



I bought a 90 Formula350 orphan with most of the system but almost no Y-pipe and seeing the layout will help me reconfigure them!
now looking at the pics these are both Tri-Y anyone know which brand is which? as there different

 

zman
Both of the pics you posted are the same headers,mine are 25 years after they were installed.

 

yeah taking more looks your correct and I have confirmed i have the same on my car I just went and climbed around on it and can really see that much for any good pics but heres old shot of driver side of Y-pipe - beaten to death, someone stole the cats off it too


this pipe really took a beating


could anyone get me the OD of the pipes after they Y'd together to the converters?

 

That pipe runs below the K member and lends itself to damage from speed bumps