I agree just port the stock ones. It's not really worth it on a stock motor IMO. But I do things all out so maybe it's just me. For example, when I got 96-97 shorty headers I didn't want to get a used y-pipe so I got all new 2.25" true duals lol.
I can put up some pics as a comparison if there is any doubt. the cast manifolds are 4 ~4" long down turns with numerous flow obstructions running into 1 long run to the collector which is tiny. There is no way to port that to any consequence, I tried for laughs.
You can cut costs by maxing out 1 single exhaust setup if you never plan on going too radical. To improve flow, get rid of the factory cats and replace them with 2 2.5" down tubes running into 2 new aftermarket high flows. This will give the exhaust system a little extra capacity and a smoother flow path out of the motor. Retain the stock resonator for back pressure and then go to a larger tailpipe. Finish it off with your choice of muffler.
My brother bought a cat back Flowmaster setup from 21st Century Exhaust in Florida for $300 US last year. A good set of cats should run about $50-100 bucks new and then whatever you can get manifolds and install for.
i have a few sets of supercoupe manifolds they are ported and are good to about 300 hp after that even the small 96-97 header dont cut it anyway so port your stockers or get some supercoupe manifolds and port them they flow as good and headers when ported. but remember hte stock exh is bad ,
most guys run a 2" primary into a single 3" going back thru tank area then back to 2" duals
hey anyone interested i have a supercoupe exh system layn around manifolds and rear portion duals for a 89 sc
I had to return an ISP router to the cable company and the office is about 30 minutes away. As I am driving, the car starts acting like it is missing. I could really tell it was acting up when I had to go up hills.
I made it back, though the car was running really rough by the time I made it...
I noticed the sticky in the forum top but could not find the info provided there or via search. I spent the last 2 days tackling the valve covers before I start doing motor mounts and trans mount. Typical space problems and cursing provided on both sides for lack of clearance. Luckily...
DTC34: DRIVER SIDE AIR BAG CIRCUIT LOW RESISTANCE OR SHORTED
So, is it best to leave this alone and live with it or take it somewhere? From what I read, it would seem the air bag module is going bad.
I did not see where anyone mentioned in the threads what to actually do other than test the...
I own a 1993 Thunderbird LX 3.8L V6, It has been parked and non oped for a while due to a mystery vibration occurring.
My mech, Ken Loyd, after a long long brainstorm finally figured out the problem.
It was the oil pump and the intermediate oil pump shaft the one in between the distributor and...
My 1996 3.8l shakes when in idle in drive.
It doesn't shake when in park or driving just when I come to a stop and the RPMS are low.
What could this be ?
Car shakes so back when trying to park it sometimes dies
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