yr/model for 4-bolt flange y-pipe?
Thread Starter
Joined: May 2004
Posts: 5,338
Likes: 72
From: Lexington, SC
Car: 1987 SC/1985 TA
Engine: 350/vortec/fitech
Transmission: T56
Axle/Gears: 3.27 9-bolt
yr/model for 4-bolt flange y-pipe?
What year/model thirdgen came with a four-bolt flanged connection between the y-pipe and the cat? I picked up a set of manifolds and y-pipe to replace the leaking stuff on my LG4 TA (want to keep it stock appearing and this stuff is much larger than the garden hose on there now). The y-pipe goes from round to oval and terminates in a flange with four bolt holes. I want to install the proper cat and narrowing this down should help when I get on the phone with Catco. Thanks in advance.
Joined: Mar 2000
Posts: 43,187
Likes: 42
From: Littleton, CO USA
Car: 82 Berlinetta/57 Bel Air
Engine: L92/LQ4 (both w/4" stroke)
Transmission: 4L80E/4L80E
Axle/Gears: 12B-3.73/9"-3.89
Sounds like '83-'86 ('85 for all practical purposes) L69.
Thread Starter
Joined: May 2004
Posts: 5,338
Likes: 72
From: Lexington, SC
Car: 1987 SC/1985 TA
Engine: 350/vortec/fitech
Transmission: T56
Axle/Gears: 3.27 9-bolt
Outstanding. Thanks for the help. Any recommendations on stock like cat-back?
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
I like the relatively soft sound of Hooker catbacks (except at WOT when they growl nicely). Summit, HOK-16822HKR. This system with the Catco and stock Y would bolt up easily.
JamesC
JamesC
Thread Starter
Joined: May 2004
Posts: 5,338
Likes: 72
From: Lexington, SC
Car: 1987 SC/1985 TA
Engine: 350/vortec/fitech
Transmission: T56
Axle/Gears: 3.27 9-bolt
Yes I like the 3 inch but the dual chrome tips would look out of place on the TA. I'm trying to keep it stock looking.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Originally Posted by naf
the dual chrome tips would look out of place on the TA.
JamesC
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Thread Starter
Joined: May 2004
Posts: 5,338
Likes: 72
From: Lexington, SC
Car: 1987 SC/1985 TA
Engine: 350/vortec/fitech
Transmission: T56
Axle/Gears: 3.27 9-bolt
JamesC: I'm getting ready to order this hooker setup. Were you able to use the tailpipes that came with the kit and not install the dual outlets? Did these or will these approximate the stock style? I no longer have the "stock" tips on mine but want to go back to the look.
Joined: Aug 1999
Posts: 19,282
Likes: 103
From: Lawrence, KS
Car: Met. Silver 85 IROC/Sold
Engine: 350 HO Deluxe (350ci/330hp)
Transmission: T-5 (Non-WC)
Axle/Gears: Limited Slip 3.23's
Originally Posted by naf
Were you able to use the tailpipes that came with the kit and not install the dual outlets?
JamesC
Last edited by JamesC; Jul 19, 2006 at 09:24 AM.
Thread Starter
Joined: May 2004
Posts: 5,338
Likes: 72
From: Lexington, SC
Car: 1987 SC/1985 TA
Engine: 350/vortec/fitech
Transmission: T56
Axle/Gears: 3.27 9-bolt
That answers my question. I'll try out the kit's tips then replace them with jy'ers if I need to. Got the mini-megaphones on there now the prior owner left me with.
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