Pacesetter LT's

[Redtruck-VA]

Ryan, much appreciate, Just waiting to get a few parts together and will get started.

 

[Redtruck-VA]

Today's tracking says I'll have the Y pipe tomorrow. The fun is about to start. Quick question, do the headers go in from the bottom or top. Trying to figure how high I need to get her in the air.. The plan is to slip it together without the cats and then drive her to the shop and install the cats. The cats will be what takes the welding, I should be able to put it together without the cats at home.

 

[AF_Hemi]

from the bottom

 

[Redtruck-VA]

Thanks, figured as much. How much ground clearance do I need?

 

[AF_Hemi]

none. just enough to get the tire off.

 

[truckin151]

Well.... since you are lowered, you need to jack it up enough to get under it to check things out for test fits for the cats and possitions for the O2's I did mine (well headers and Y) in my driveway on jack stands, but for welding in the new cats and wiring and getting it all to fit right after you need some room

 

[Hammer_Z71]

The stage 8 clips? Weren't too hard, but it's easier with the wheel well liners out. Shouldn't take too long. :********:

I've got a set around here someplace, bought them from Moe's when I did my headers. Marty at KRC talked me out of using them. Something about using the clips in an aluminum block would eventually destroy the threads over time since the bolts are steel. If the bolts couldn't loosen over time the weak link became the soft aluminum threads. Was better to check and re-tighten bolts every 6 months or so than having to deal with re-tapping the block.

I've never read where anyone has had a problem with the threads, but figured he knew a hell of a lot more than I did about it so I never used them. I ain't had a big deal with them loosening. Maybe find two or three that could stand a 1/4 turn or so every time I check 'em when I do oil changes at around 5k miles...

 

[Redtruck-VA]

I bought a new set of mopar header bolts and figure I would go with them. I'll do as you have done and just check them when changing oil. Thanks,

 

[truckin151]

Stupid question but, is there a difference in flange sizes between the pacesetters and the stock manifolds and there was a difference in bolt sizes between the stock bolts and the stage 8's?

I thought the flange size was different and the bolt sizes I know were different, the stockers were a bit longer than the stage 8's. So if you got the stock replacements header bolts I would probably check into that just to be sure they work. Would hate to get all the stock stuff off only to find out that the parts dont mesh together and have to put them back on.

 

[Redtruck-VA]

Yes there is, when I ordered them I did not take that into consideration. The mopar bolts which are really sweet with small heads are 1-1/4" long, so when used with the header flange/gasket they are close to 1" protuding. i doubt if the head can take a bolt that long. I can make them shorter, making them longer is a lot more difficult. lol...

 

[Redtruck-VA]

Y pipes have arrived so looks like as soon as it warms a little I be getting busy.

 

[KGBIGCOUNTRY]

Ahhh spring time mods

 

[Redtruck-VA]

Like a kid in a candy store, also just got a offer for a hood that'll give red a new look. Budget is clearly shot....

 

[truckin151]

Budget? What's that mean? Don't think I have heard that word when talking mods...

 

[Redtruck-VA]

Sorry, i know I was being reckless when I threw that out there. What I meant was, It wasn't me who was responsible for the recent internet slow down and I certainly understand the guy in the brown truck is trying to put his kids through school. My bad, so let the mods continue.... I'm thinking my paint guy is going to make a bundle if I go through with this new hood.

 

[Torque]

Curious as to why you believe the stock cats flow more than the magnaflow hiflow cats? Is it the material they used inside or what? What do you think about Magnaflows "spun" cats:

Reason I ask is I was looking around trying to decide what route to go with my exhaust and noticed a choked down section right after the oem cat:

 

[AF_Hemi]

the stock cats dont flow more than the magnaflow hi-flow. The reason people say dont waste your time is because there just isnt enough additional flow in the hi-flows to warrant the expense. The hi-flows DO flow a little better, but not by much.

 

[Redtruck-VA]

I have stated a few times that the HiFlows don't flow as well as the 03 OEM cat because the the 03 has a single cat and it is a pretty good size cat. I don't know how they compare to the later models that used two cats. My HiFlow doesn't look like the one pictured and has two O2 bungs and is physically smaller than the OEM cat. With the exhaust setup i currently have with a single OEM cat Red ran 5.97 0-60 mph. I changed only the cat to the Magnaflow and she ran 6.2. I contribute the slow down to the magnaflow cat. Now if you are running two of the Magnaflows you wil have better flow than the single OEM cat. But head to head my guess is the OEM outflows the Magnaflow.

Edit: I'm curious and to be honest I don't remember seeing the spun cats when I was looking at replacement cats, Either Magnaflow has changed their discription of cats or I mispoke but the cat that I believe was sold to me by Summit was a Hiflow Magnaflow looks like this universal and I paid $80 something. But anyway this is the type of cat that I am comparing the OEM to. Sorry for the confusion. http://www.summitracing.com/parts/MPE-94269/?rtype=10

 

[truckin151]

The highflow may have actuallly flowed a bit better than the stock OEM cat and because of that it reduced the back preasure more than what is needed or desired and cut your times. When I was running around with no cats for a while my lowend suffered.

 

[truckin151]

the stock cats dont flow more than the magnaflow hi-flow. The reason people say dont waste your time is because there just isnt enough additional flow in the hi-flows to warrant the expense. The hi-flows DO flow a little better, but not by much.

They may not flow more than the highflo's but the OEM's flow close enough to not warrant the extra expence and retain some back preasure on the system.