well i finally got the $$$ to do my rebuild :-) and i'm decideing cams cc305 maybe and i'm going to port & polish the heads and get the computer program. now the Q should i get the shortys ? or just leave it stock how much power is gained with the headers is it worth it?
now if i get the headers then i need the y and new exhaust $$$
do you think the stock will perform good.

i have a built A4, 3.42 gears.
thanks guys

 

LT´s get you 15-30RWHP,go if you want power get 306cc or GM847,the stock headers are BAD

 

my tuner said no probleme passing smog with the cc305 but the cc306 might take a few tries. LT not legal here.

 

When your in the position where stuff is not legal... try to get a friend who can pass you .

 

where are LT's not legal? I have to pass emissions will I have a problem?

 

I'm in So California, you have to move the cats back for the LT my smog man say he will let me move them back alittle as long as i get the hook up.

 

NY is adopting many of Cali's emissions inspection laws. I have been told by SEVERAL inspection techs that as long as your state doesn't use a sniffer-test, you should be okay with both the cam, and the cc306.

Go with long-tubes. I believe Kooks makes LT1 long tubes with all the emissions bungs welded on. The before-cat 02 sensor screws right in. With the aftermarket, catted y-pipe you'll probably need, the rear 02 sensors are screwed into the after-cat bungs, but left unplugged. You then plug 02 "sims" into the after-cat 02 sensor plug. This keeps you from throwing a SES.

Depending upon the state you live in, if you get a prik inspector, he could fail the car on a "visual" for not having OEM emissions-compliant parts, and for the aftermarket parts not being in the same location as the OEM parts were.

I'm gonna have to go through this s#it in March, when my inspection is due. However, I've had techs tell me they'd give me a sticker as long as the car doesn't set a MIL when it's plugged into the computer. If the computer test passes, they could give a s#it less about OEM emissions compliant parts/locations.

Check out your state's emissions inspection laws. If the test is solely based upon how the computer reads your OBDII codes, you're in like Flint....then go and get those long-tubes AND the cc306.

 

Ok on ebay i seen a sweet setup LT w/daul cats out the one cat is almost in the same area as stock :-)
now my Q is i only have 1 cat how do i hook up Daul cats o2 sensor?

 

Hell, we should just switch motors I have the cc305 and computer programmed and headers and it runs perfect.

 

how you like the cc305?
what headers you have..

 

Id suggest MAC mid length headers. Ive had mine for 4 years and the coating is starting to wear but theyve had a hard life and held up well. You can get them with all emission hookups and even keep the stock location for the cat. In SoCal, I would be willing to guess that theyre strict on emissions so I wouldnt even test the waters. Im also guessing youre car is a 93-94 since its a single cat car. You could convert it to dual cat but why? As for the cc305, I ran it for a lil while and it ran hard! I ended up going bigger but would suggest that cam for a daily driver anyday.

 

I like it a lot because drivability is great, it passed smog twice now, good gas mileage for a mildly- sized cam v8, nice upper rpm pull, noticeable lope at idle when I had my loudmouth exhaust, and great mpg on the highway. I have slp dual cat shorties. I was planning to keep this setup, get the heads ported, and go with a blower, but I couldn''t resist on an NA cam that was for sale. I'm gonna throw in a used Joe O cam that's in the 226/234 range and will likely swap these shorties out for the rk sports sitting in the garage.

 

on the single to daul cam how would i run single and try to keep the cat around the same location? i'm thinking i would have to put the cat after the Y

thats one reason i was thinking about getting LT a few people told me its not that much more HP from stock to shortys?
i don't know.

 

'95's were single cat, too. I think the switch to dual cats was in '96, at least for F-bodies. My '95 Trans Am was a single cat, although this could fall under one of the "mid-year" changes.

Anything is better than stock exhaust manifolds. Shorties do offer the advantage of not moving everything so far back, allowing OEM emissions hook-ups/location. I'm not sure about whether or not mid-length headers allow the same.

Strictly from a power gain viewpoint, nothing will out-perform a set of well-designed and manufactured long-tube headers. They scavange cylinder exhaust better than anything else, hence their better flow characteristics. Combined with CAI, heads, and a cam, you can make a kick-*** LT1. BUT....thoroughly research your state's emissions testing regulations. Depending upon the regulations, long-tubes may not be an option.