hulling out the cats

[zr-1assassin]

Originally Posted by A26B

The rear bumper is part of the Lingenfelter Aerobody. I don't know if they will sell only the rear bumper.

http://www.lingenfelter.com/pack_cor_c4bk.htm

John Lingenfelter's yellow 95 ZR-1 had only the rear bumper installed. I understand he wanted more downforce from the bigger spoiler during his 225 mph run.

The tips were hand made by Texas Quality Exhaust in Houston. That's why they are just a bit irregular.

they are a bit irregular, and thats what makes them so awsome looking! i realy think the rear mount exhaust tips on yours are the best looking thing ive seen on a zr-1 azz! what did you do with the spare tire cover, remove it and put up a custom heat sheild on the back side? i always wondered if there would be a problem with the exhaust being up there by the gas tank (boooooom), but i guess not because you did it . i seen one time in a magazine where they filled in the exhaust outlet spaces in the rear bumper of a c3. they just fiberglassed them in, or poly or what ever the rear is made of. i guess a guy could do that with a c4 bumper. i'm going to contact lingenfelter and see if the sell just the rear bumper. if not..... its customiztime.

[WB9MCW]

THE GUY'S OVER AT CORVETTE VALLEY ACTUALLY THOUGHT THAT JERRY'S KEWL EXHAUST PHOTO OF THE "BEAST'S AZZ" WAS A FAKE---THE THOUGHT THE FUMES WERE PHOTOCHOPPED IN AND WERE FAKE! LOLOL

[zr-1assassin]

i guess just because they couldn't do work like that, they thought no one could. WRONG!

[Aurora40]

Just FYI since you are talking center exit, Callaway also made a center-exit version of their exhaust (and a center-exit version of the rear aerobody bumper)



To your original question, if you look at the cat on the original exhaust, it's pretty huge. I suspect it's not the problem with the original manifolds. I imagine with no cats they wouldn't make much more power. Back in the day, Callaway reworked the primary tubes on the '90-92 style headers but kept the cat the same. They claimed about a 10hp improvement with them.

If you go to long-tubes, cats also don't seem to be much of a restriction, supposedly ~2hp on a 350. The main issue with them is fitment, the long tubes would otherwise bolt right up to the stock exhaust, but adding cats means you need to do a bit of work to the original pipes.

[zr-1assassin]

Originally Posted by Aurora40

Just FYI since you are talking center exit, Callaway also made a center-exit version of their exhaust (and a center-exit version of the rear aerobody bumper)



To your original question, if you look at the cat on the original exhaust, it's pretty huge. I suspect it's not the problem with the original manifolds. I imagine with no cats they wouldn't make much more power. Back in the day, Callaway reworked the primary tubes on the '90-92 style headers but kept the cat the same. They claimed about a 10hp improvement with them.

If you go to long-tubes, cats also don't seem to be much of a restriction, supposedly ~2hp on a 350. The main issue with them is fitment, the long tubes would otherwise bolt right up to the stock exhaust, but adding cats means you need to do a bit of work to the original pipes.

do they still offer this rear lower shroud with the center exit port? or does anyone know if there is a company that still does? lingenfelter,drm,callaway....????

[Aurora40]

Callaway doesn't sell the aerobody parts separately. Also the lower part would wrap around to the rear wheels.

[GrayZ]

Assassin,
why don't you go ahead, and give in to the dark side.
buy yourself a honda civic, like all you young guys like.
you could then install one of those, beefy fart pipe mufflers.
Get yourself, a big frikkin wing, on the back.
maybe, add one of those, spiffy, under the car light kits.
then take a picture of it, and get yourself a tatoo.

[WB9MCW]

[zr-1assassin]

Originally Posted by ITLGO2

Assassin,
why don't you go ahead, and give in to the dark side.
buy yourself a honda civic, like all you young guys like.
you could then install one of those, beefy fart pipe mufflers.
Get yourself, a big frikkin wing, on the back.
maybe, add one of those, spiffy, under the car light kits.
then take a picture of it, and get yourself a tatoo.

not bad pizza man but i think i will stay with the Z for now! but if you ever decide to sell that 1995 kia spectra you got,let me know. and keep it the way you have it now...i want those 28inch wheels you got on it and i love what you did with the 15 H.P. shot of NOS! i am still willing to give you the $350 for it we discussed in B.G. i still cant believe you trailered it all the way down there and it didnt sell

[zr-1assassin]

i forgot to tell you i got those pics back that we took down at your place keith [IMG][/IMG]