omarrakeen

iTrader: (2)

stock with a lil scrape get your 3 inch Y plus headers you gonna love it!

citationls

Aright thanks for confirming that. Hmm I'd ditch the cats if it was legal but I kinda wanna stay legal. I already have a hooker cat back so I'll probably keep that on just cause it's already on there. Part of the reason I'll probably keep the cats is cause I'll be taking my car to dealerships for maintenance every now and then. I'm not gonna do all my own maintenance because I don't have all the skills for that and I'd feel better knowing my car has been checked by a professional. My dad and I were wondering if a dealership would notify the police if they saw you weren't running cats. It'd kinda be a dick move but who knows. Also, I'll have to pass emissions in a few years anyway so I'll have to reinstall cats then if I take them out.
Thanks

citationls

haha aright. How is clearance for hooker, lpp, and pacesetter headers? And the biggest reason I'm debating whether or not to get headers is because of the cost vs hp gain. I'm figuring I'd gain 20hp max without a tune if I were to get headers. If I were to get a tune thats 400 more bucks I don't have so total this would cost around 1000 which is too much. Now I'm debating whether to just do pulley/s, electric steering pump, and rack and pinion steering instead of headers.

Element

iTrader: (5)

Why an electric steering pump and pulley? Headers are, pretty much without debate, the best bolt-on you can do for an LS1. You get a good power gain out of just headers, and they help every other engine mod you put on the car. Something like an underdrive pulley is one of the last things to do.

20rwhp from a single mod isn't bad.

King Nothing

iTrader: (9)

once you move the cats from the original factory location your illegal, cats with your lt's wont make it any more legal. i've taken my car to the dealership to have maintenance done that i couldn't do myself and they never say anything what i have on my car . . . well most of the time they say "are those long tubes? those are nice!" lol

citationls

What do you do when it comes time for emissions testing? We have it every 2 years in CT.

Lotapwr

You find a shop thats willing to look the other way for a few bucks and it passes.

joecar

You just shuffle the parts.

King Nothing

iTrader: (9)

this
i live in cali and it's smog naziville here, you have to know someone to do anything anymore without the government creeping up your ***

citationls

hmmmm I'll have to think about this. Cause if I take out the cats and I can't find a shop that'll let me slip by I'll kinda be screwed.

citationls

I think I'm gonna keep cats on since there's no hp gain with them off and in Ct they are supposed to do a visual inspection for cats during emissions testing. I don't wanna have to pay someone 200 bucks to pass my car illegally for emissions every time.

Does anyone know what the difference between hooker super comp and competition headers is? Do they both give u the same hp gains?

King Nothing

iTrader: (9)

there is gain with having them off, more air flows out which means the engine runs better then you get more power

citationls

hmm I don't know for now I think I'll keep stock cats on. Only issue is if I don't get lpp cause I wanna stay legal it'll be like 900 bucks :/ but I guess I don't have a choice.

garygnu

keep the stock exhaust pieces and install them for emission testing.remove the stock exhaust and install the exhaust you like.

Element

iTrader: (5)

You can't really run stock cats with any set of long tubes I've ever seen.

libertyforall1776

iTrader: (2)

I wonder how just replacing the mounts with stock units will be? I have read some disappointments with poly ones on this board in the suspension section...

matt224

Citationls, I know a place in CT that will look the other way when it comes to this. Expect a PM from me.

You can get BBK headers and a ORY for $370, that will be at least 20hp. You don't need to get a $400 dyno tune either, a tune from PCMforless.com would work well.

Element

iTrader: (5)

Depends on the mileage. You also have to remember some people on this forum expect a modded f-body to drive like a stock Cadillac, so any increase in NVH is "unacceptable".

Replacing 10-year old stockers that have 80k miles on them with new stock motor mounts is still going to be better than leaving the old ones in.

libertyforall1776

iTrader: (2)

I am at almost 97k on my SS, and debating stock or poly replacements since headers are going in soon... Appreciate any more feedback on the differences...

Element

iTrader: (5)

Some people think polys transmit too much vibration, although poly engine mounts and a stock trans mount are normally pretty mellow. New stock mounts are better than worn-out old ones, but they are softer, so they'll allow more deflection and thus more engine movement, which can be an issue depending on how close your driver-side collector is to the floor pan.

I've got solids and don't mind them at all, but my car shakes so much anyway I hardly noticed the change from 87k stockers to solids. Solids will transmit a lot more vibration, although some people hardly notice it at all. The Spohns do raise the engine up about 1", though.

I'd personally do poly engine mounts with a new OEM trans mount, seems to be about the best combination of limiting engine movement and adding minimal extra vibration.