I have been running a set of JBA Mids on my LT1 (383) for years here in Texas (Houston) where they are emission *****. As long as you have Air hook ups and O2 hook ups you should be fine. However, they are correct that long tubes will probably fail you in a visual inspection as almost all don't have air hookups and some requre 02 sims. I personally would stay away from long tubes if you want to keep your legality and they also really compromise your ground clearance and the gains are not that much more than mids. Good luck.

 

SLP has headers for just about everything including all LT1s. I have a catalog sitting right in front of me---had it for ages. Tell me what you need, and I will tell you what they have ---at least used to have.

I run SLP, dual-cat shorties on my SS. I bought them uncoated and had a professional outfit ceramic coat them. I would have opted for some nice Kooks or AS&Ms or other qualilty brand of long tubes, but I don't relish the possiblity of getting nailed here in Oregon by the emissions cops. Call me chicken, but though the chance of getting caugt may be slim, I'd hate to have to take them off and replace everything if I did get caught. JMHO

 

Yea had that same catalog YEARS ago lol. They definately make slp 1 3/4 shorties...or they did anyway

 

I like my pace setter LT's.

 

Anybody had BBK or Edlebrock headers? Guy at the local speedshop said shortys are almost worthless that only longtubes give real power, but he drives a Mustang although it is a 9 sec. Mustang. A Shelby GT500 putting down 603 rwhp on the Mustang Dyno they have.

 

LTs do give you more power, but you have to have the motor to push it, IE: 383 or 396, even the 355 setups work better. However, keep in mind that if your state is picky on emissions (like here in Texas) you will probably fail inspection. I would recommend sticking with Mids as I stated before as they are almost as good as LTs, they don't have clearance issues and will pass emission inspections. Good luck.

 

Just had my Kooks lt's and catted y-pipe installed with emission hook ups,it is night and day compared to my slp shorthies -stock ypipe.

 

Amy clearance issue's with the Kooks? Aren't they really expensive? At the speed shop I'm talking to say's it's at a 2 day job to install the headers.

 

I am running hooker headers on my 93, but Illinois just passed a law saying they are not going to test any car older than 96, so I really can do whatever I want to the emission system.

 

I did not do the install so cant say how long it took,i had a custom ypipe so it took a few days,i cant see two days just for headers,There are no clearence issues,fit great,plug access is even better than my slp shorties.yes they are somewhat expensive,but you get what you pay for..

 

Just wanted to make sure I clarify my statement, you will have clearance issues if you have modified the ride height of your Z. I have the Eibach Sportline kit and if I installed LTs then I would drag everything. If you are at the stock ride height LTs will work fine.

 

I've read that the Kooks Y-Pipe goes from 3" where it mates with their headers down to 2 3/4" inches to mate with the stock catback. Is that true? If so, wouldn't that be considered a restriction and somewhat defeat the purpose of having a 3" catback? Is this the case for all Y-Pipes? Do people just cut that portion off of their Y-Pipe? Sorry if this is a dumb question, but I'm no exhaust expert and I'm looking to install some headers and exhaust around Christmas.

 

I have DMS springs,so yes my car is lowered,i only driven the car home from the shop which was wednesday,i'm know i will have to be careful in certain spots,driveways,bumps etc.Arent the sportlines lower than the pro kit,so that is where your problem will arise

 

I'm still leaning toward the shorty's although I am definitly going cam and heads down the road. Just on a budget. Too many toys.The boat is a toy that cost a lot to have. The bike is the cheapest with the car in between.

 

I have the Edlebrocks. They are a step up from the stock manifolds. The only issue is a couple of plugs are a bi$^* to get to. I did notice a seat of the pants improvement but nothing I can really back-up with track times.
Installation took me about 2 weeks worth of evenings and partial weekends, including welding up all the exhaust, ect.