Vetal

iTrader: (3)

Can you explain that a bit?

98Z28CobraKiller

iTrader: (17)

Here is a rough before and after

dman

iTrader: (5)

thats it !!

Vetal

iTrader: (3)

I can't really see, did you have to cut also metal support that go from rails upwards? My radiator is just few millimeters wider than space between those two "towers", but because they seem to have some structural use and also headlights (Firebird) are bolted to them, I don't really want to cut them...

98Z28CobraKiller

iTrader: (17)

Different angle after the support was welded on and painted.




There are 2 small brackets (one on each side) which I believe have those 2 studs sticking out of them. Those would bolt to the sides of the radiator supports normally and the bolts go all the way thru and out the other side. We ended up welding those brackets on and not dealing with the bolts. It's tight in there. The grinder will become your friend. A portable band saw is nice for much of this and a plasma cutter would come in handy sometimes also.

Hi Volume

iTrader: (3)

dope setup, just keeps my motivation at a max everytime i check this thread!

Whats hp/trq estimate? 600ish?

98Z28CobraKiller

iTrader: (17)

I've coasted thru the traps at 135 mph because I am blowing thru the converter and hitting the limiter by 1200' or so. At a race weight of 3650# with 1/2 tank of gas, puts me well over the 650 rwhp mark according to the calculators. I do my testing and tuning on the street and the track. Haven't been on a dyno in a couple years.

Vetal

iTrader: (3)

does it fit in place of stock sensor without too much hassle? where did you get it from?

98Z28CobraKiller

iTrader: (17)

Physically identical to the old one. Plugs right in and works with HPTuners 98 2 Bar SD OS. Just have to switch over the values in the tune for the new range.

I had a friend get it. He is a parts guy at a dealership. I believe that they come on the Cobalt SS also.

THE1320

iTrader: (2)

any updates?

98Z28CobraKiller

iTrader: (17)

Waiting on a friend to return the tranny jack so that I can ship off the converter. My work has slowed down alot so I haven't had the coin to finish up my to-do list. It's also looking like I will need to either sell/swap my rear end for a 9". Closest ratio I can go with the S60 appears to be a 3.54. I think that I will need something more like a 3.23. I've been told that I can have a custom gear cut but then what happens if the rear screams and howls like a banshee?

98Camarod

iTrader: (43)

That gear, 3.54, should be fine if you have taller tires though right? What do you have left on the to-do list consist of?

2001-WS6

The question is how fast do you really want to go? I'm kind of in the same zip code that you are going to be in when you get a chace to turn it up a bit. I run a 3.5 gear in my 9" rear end with the MT 325/50/15 DRs right now at 149mph in the 1/4. I'd like to keep it under 7K rpm because of where my cam is making power. So I'm on the verge of the gear change for that reason as i turn up the power.

The PT88 can easily get you into the 145-155mph range on your combo.

So if you tighten up the converter to 3400-3600 rpm range you can still make some nice 148-152 mph passes and keep under 7200 rpm on a 28" tall tire with the 3.54 gear.

Then when you have some spare coin, you can look at a custom gear for the S60 or the 9" with a 3-3.2x gear. The point is get her out and enjoy her this summer before you tweak it for the final big run of the season.

Rick

Nimitz87

iTrader: (17)

lol @ season...racing for the most part is year round down here... this is the worst time to race...daytime temps 95+ humidity close to 100%...we race in the winter

Chad

98Z28CobraKiller

iTrader: (17)

I'm currently running a 3.73 gear with the 325/50/15 tire (28" tall). Spending $500-550 to go down to a 3.54 gear and only drop my RPM by 200-300 just doesn't calculate for me. I've been 9.33 @ 146 on this gear but I was going thru the traps at 7300+ RPM. I intend to go 155MPH once I get my list all knocked out. I'd like to get there by 7K RPM. Don't think that will happen on the 3.54 with a stalled auto. Not to mention that the 3.23 would be so much nicer for cruising with the 3 speed.

To do list:
1) Restall the converter. Needs to be tightened up over 1K RPM.
2) AMS1000 boost controller with CO2
3) Gear/Rear swap
4) Forged pistons and rods/Cam/AFR225's

Phat69

A belt drive fuel pump would have been much easier and probally cheaper. You should get a meth/water kit to put some timing back in also.

THE1320

iTrader: (2)

shame you cant just lock up the converter. i cant see puttin ford parts on my chevy. so ill try to make a 8.5 live with 3.42s and 30" tires. if that fails its a 60 for sure

TRB02ss

iTrader: (3)

What rear end are you running

THE1320

iTrader: (2)

its a s60

98Z28CobraKiller

iTrader: (17)

The worst part about it is that I will be very sad to see it go. My car hooks better than most of the local Fbodies and I think that has to do with how enormous this rear is. It weighs about 200 lbs.