replace stock LG4 Y-pipe
#1
Senior Member
Thread Starter
Join Date: Mar 2003
Location: NE Ohio
Posts: 966
Likes: 0
Received 2 Likes
on
1 Post
Car: 83 Z28
Engine: 305 (LG4)
Transmission: THM700R4
Axle/Gears: 10 bolt, 3.23 non-LS
replace stock LG4 Y-pipe
Is there a mandrel bent (i.e. efficient) Y-Pipe that will "bolt into" an lg4 with stock manifolds, EFE, and stock cat?
thanks,
phil
thanks,
phil
#2
Re: replace stock LG4 Y-pipe
Originally posted by phess11
Is there a mandrel bent (i.e. efficient) Y-Pipe that will "bolt into" an lg4 with stock manifolds, EFE, and stock cat?
thanks,
phil
Is there a mandrel bent (i.e. efficient) Y-Pipe that will "bolt into" an lg4 with stock manifolds, EFE, and stock cat?
thanks,
phil
#3
Moderator
iTrader: (5)
Not that I know of, but anything is better than an LG4 system. I swapped to the L69 (manifolds, y-pipe, and intermediate pipe along with a high flow cat and muffler) and noticed a remarkable difference. Note the pics in the following link:
https://www.thirdgen.org/techbb2/sho...hreadid=216368
JamesC
https://www.thirdgen.org/techbb2/sho...hreadid=216368
JamesC
#4
Supreme Member
iTrader: (1)
I replaced my LG4 Y pipe with a 3" one from a carb'd IROC. I already had an Edelbrock cat back. The IROC Y pipe is, IIRC, stainless. While it only added a minor amount of power to my LG4, Dyno Don claims that on a high performance engine, that Y pipe could be worth up to 30 hp.
BTW, a Y pipe from a TPI Camaro won't work on a carb'd car.
BTW, a Y pipe from a TPI Camaro won't work on a carb'd car.
#5
Supreme Member
Join Date: Jul 2001
Location: Pueblo Co
Posts: 3,974
Likes: 0
Received 0 Likes
on
0 Posts
Car: 1989 C4
Engine: L98
Transmission: 700r4
Axle/Gears: 307
No dierect bolt in y pipe is made. Your best bet is to save and buy a set of headers with a y pipe. If you think you just need a better flowing Y chances are you could really use the whole setup.
#6
Supreme Member
Join Date: Jul 1999
Location: Ahead of you...
Posts: 2,753
Likes: 0
Received 7 Likes
on
6 Posts
Car: 1984 LG4 Camaro
Engine: 350 Roller Motor
Transmission: Level 10 700R4
Axle/Gears: Strange 12 bolt 3.42
This is exactly what you should do:
Buy a 3" replacement slip-fit cat (for an L98 car) and call up Gales banks and order a 3" cat back with an LG4 y-pipe that goes into a 3" slip fit cat. I did that on my Camaro and IROC and it added about 35hp without any other changes - it also sounded awesome.
Buy a 3" replacement slip-fit cat (for an L98 car) and call up Gales banks and order a 3" cat back with an LG4 y-pipe that goes into a 3" slip fit cat. I did that on my Camaro and IROC and it added about 35hp without any other changes - it also sounded awesome.
Thread
Thread Starter
Forum
Replies
Last Post
NBrehm
Engine/Drivetrain/Suspension Parts for Sale
1
08-25-2015 11:49 PM