cams

[DHolmes]

To be perfectly honest, shorty headers would be a waste of money. For all the work you are going to do to get them in, might as well get long tubes and see nice gains. Shorty headers only flow slightly better than stock.

Here is where I got mine. If you are looking to pass Emissions, you will need ones with those provisions. Here is the non emissions ones.

Non Emissions longtubes

Here is the Y pipe (ORY)
Offroad Y Pipe

I think I might pass on the headers 12-20 hp for for $700,when I can get 100hp fron a nitro kit for the sameprice

[ConElite]

I think I might pass on the headers 12-20 hp for for $700,when I can get 100hp fron a nitro kit for the sameprice

Headers are not $700. Plus Your better off spending it on something thats going to give you continues power, unlike nitrous that only gives you power when its activated. I think you will wear down your engine shooting NOS all the time.

[DHolmes]

Headers are not $700. Plus Your better off spending it on something thats going to give you continues power, unlike nitrous that only gives you power when its activated. I think you will wear down your engine shooting NOS all the time.

headers are 350 but the install is 300-400 at a shop,the install and a tune for nitro is only $200

[Joe 1320]

To be perfectly honest, shorty headers would be a waste of money. For all the work you are going to do to get them in, might as well get long tubes and see nice gains. Shorty headers only flow slightly better than stock.

Some of that is an urban legend. Shorties don't offer the low end torque of a long tube. Savy racers know that if they have an automatic trans, lengthening the collector on long tubes will help their launch as it maximized torque below the torque peak. Often times this whole process is confused with HP gains and people assume that long tubes give more HP. In fact, I've seen some cars with shorties make more power than another combination with long tubes.

With a proper high flow Y pipe, shorties deliver very close to the same upper end HP as long tubes. I ran 107 mph with a stock LT-1 shortblock, heads and bolt ons in a full weight car running SLP shorties and Random Tech Y pipe. I never saw a comparible LT-1 with long tubes and other similar mods run faster. At best they were about the same.

[ConElite]

Good point Joe. My brother and My buddy both ran Shorties and they can Some pretty noticable gains. Pushed my Buddy 13.59 with just tires, TB,Control arms and Shorties headers with cut out after cat. They do pretty good. Seems like you get more gain on an LSx engine with long tubes than on an LTx.

[DHolmes]

would I get more of a gain from shorty's,since I have cutout,hiflowcat and borla ypipe

[ConElite]

would I get more of a gain from shorty's,since I have cutout,hiflowcat and borla ypipe

You should be fine with shorties. Either way thats the only ones you can get to pass smog.

[DHolmes]

You should be fine with shorties. Either way thats the only ones you can get to pass smog.

ill think Ill get headers,my luck ill blow my engine with nos nad it is my daily driver

[JPack]

Some of that is an urban legend. Shorties don't offer the low end torque of a long tube. Savy racers know that if they have an automatic trans, lengthening the collector on long tubes will help their launch as it maximized torque below the torque peak. Often times this whole process is confused with HP gains and people assume that long tubes give more HP. In fact, I've seen some cars with shorties make more power than another combination with long tubes.

With a proper high flow Y pipe, shorties deliver very close to the same upper end HP as long tubes. I ran 107 mph with a stock LT-1 shortblock, heads and bolt ons in a full weight car running SLP shorties and Random Tech Y pipe. I never saw a comparible LT-1 with long tubes and other similar mods run faster. At best they were about the same.

Well I guess my dyno sheets are off then. I picked up 22 HP over the shorties. 29 over stock. This going through the same magnaflow 3 inch all the way out. Should also note that pipe diameter was increased over the shorties though and non emissions. I wasn't very pleased with how the car felt after the shorty install after all the work to get them in. Also modifications had to be made on the drivers side to get them to clear the steering shaft. Was not a happy camper.

[Joe 1320]

Well I guess my dyno sheets are off then. .

Or something else. Not everyone's results are always the same. Factory Y pipe? Cats? who knows what it is. You experienced it once, I've seen it a bunch of times. Like I posted before, I've seen intances with shorties that outperformed long tubes and I've seen the other way around. The fact remains that all parts are not created equal, not every motor responds the same, and when Mars aligns with Venus............


It's the correct COMBINATION of parts that makes an engine run at it's peak. And that word peak is part of the misconception as well. If your gains made you happy, great. When I did a long tube conversion of a buddy's 95, we built his combo exactly as mine except for the shorties. He wanted Hooker long tubes. The result was within 2 HP (my advantage ) , not even worth mentioning due to percentage error. Needless to say he was disappointed, as many are when the expected gains from long tubes aren't realized. Another set of shorties were installed on a very nasty 355 cid small block that turned rougly 8500 rpm. It wasn't mine, but watched the dyno. Amazing...... not much power below 3500, but once it crossed that mark it turned into an evil pulling banshee. Even the dyno tuner qouted...... "Long tubes would help before it comes onto the cam, their biggest benefit is boosting torque below the torque peak." The owner wouldn't listen because it wasn't a street car where low end torqe was an issure, he left the line at 4000.

So the bottome line is listen to all the advice from every angle and do what you feel is right. If you got the gains you were looking for, great.

[DHolmes]

just talked to a shop owner,And he told me I would notice 20-30hp from some shorty's

[ConElite]

just talked to a shop owner,And he told me I would notice 20-30hp from some shorty's

That might be Crank. But that seems like a little to much HP. You will notice the difference the less. Some cars respond to them better than others.

[Joe 1320]

just talked to a shop owner,And he told me I would notice 20-30hp from some shorty's

18-20 HP with no other changes, 20-25 if you do the Y pipe, maybe a couple more with an off road pipe.

[DHolmes]

18-20 HP with no other changes, 20-25 if you do the Y pipe, maybe a couple more with an off road pipe.

I have a hiflowcat and a borla ypipe