Chris`s85Z28

Every ones telling me I need to cage my Zed to run the engine I want to build I`d like to get a 400-500hp 350ci I`ll put sfc in but I DO NOT want to cage it but everybody says it`ll twist I don`t plan on running slicks but I do plan on running 295/45ZR17 good year Eagle F1 or GS-C out back on camaroSS rims will she twist if I lauch it hard at the track. it`s a T-toped car so will I have to cage it?

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R.I.P Dale Earnhardt 3 Nascar isn`t the same without you
1985 Z28 My pride and joy
LG4 305 5spd T-tops 3:23 posi 3" exshust mild street cam Accel wires shorty plugs cap rotor and a H.E.I super coil FINALY GOING ON THE ROAD MAY 24 after a year owning it
5.0L BEWARE
http://Chevy-Camaro-Z28.CZ28.com
Speed limits Whats that???
Kills 1/0

Irocvette355

I put a 4-point roll bar in my car. I mounted the rear strut bars right over where the shocks connect to the body. It really stiffened it up, if your going with that kind of power, subframes and at least a 4-point will help a great deal.

I making around 365 hp 410 ft lbs with no twisting.

(I can still use my back seats, but its kind of tight )

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1989 IROC-Z 355 M5
13.0@104
MACC All Camaro Show-
1st Place
3rd Gen Modified

1988 Chevrolet K-5 Blazer
6000 lbs. of a real SUV

2001 Yamaha Raptor
92 mph on radar!

[This message has been edited by Irocvette355 (edited September 03, 2002).]

RedIrocZ-28

I am running between 280 and 300 hp in my car I think... based on the track times. I have 1 subframe connector, the other had to be removed for the exhaust to fit. I definitely notice that the car is less stiff on the passenger side. You should get subframe connectors, strut tower braces front and rear, and probably a 4 point cage. No sense in twisting the "frame." Makes the car kinda useless doesn't it?

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-Brad C?
355ci '89 Iroc-Z Red, T-tops, power everything, A4,New 10 bolt w/ 3.73's
Trans-Go shift kit Corvette Servo,Accel 8.8mm wires,Flowmaster 80 series ,K&N's, !MAF Screens, Hollowed out airboxes,homemade Subframes. Kieth Black pistons 10.3:1, Comp Cams 270H (.495/.502 218*/224* 110*LSA) & valve springs, SLP 1 3/4" headers, TCI 2400 stall, Dual Roller timing chain, 2 3/4" I-pipe.
Full street trim best run:14.799/mph:93/60': 2.02 (last year) New Times to come.
New times: 13.732 @ 99.30 on a 1.878 60'
Pics of the Iroc

Stephen 87 IROC

SFC and 6 point bar and never had a problem with the T-tops.

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Stephen's racing page
or check out the race car

87 IROC SuperPro race car
461 big block
Best ET on a time slip: 11.349
Best MPH on a time slip: 119.7
Best corrected ET: 10.983

Altitude corrected rear wheel HP: 480
Best 60 foot: 1.546
Member of the Calgary Drag Racing Association

IrocSS85

ok my turn.
for one thing, your not going to hook up w/either of those tires anyways. too stiff sidewall combined w/not really sticky tires equals tire smoke.
but anyways,
I have ttops and no subframe conn.s yet. that is my next move though. Im making about 425-450 HP. (look at trap speed in sig.) and i have 10" drag radials. lots of runing the car hard and 11 pass's to date w/this combo and no twist yet. Id say subframe's are mandatory but the cage is not. but it will make it alot stiffer and easier to be consistent at the track.
chris


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1986 Iroc Z
355, cleaned up trick flow twisted wedge G1 heads, 750 holley, 700r4, 10:1 compr., forged flat tops, solidcam .501I .510E, 4gen rear w/3:73 posi, girdle, and disc's, Edel. torker II, shift kit, 2500 stal, hedmann LT. headers, 4 gen seats, man. strg., lt1 starter, alum. w/p, msd 6al, coil, dist., mallory wires.
12.86 @109mph so far(still need fine tuning)

1995 z28,SS Hood, Iroc style spoiler, tints and black outs, 700r4,2400 act. stall speed,B&M hammer shifter, 17" budnick trilogy III wheels, 275/40 ZR17, 160 stat, man. cooling fan sw., homemaid CAI,1LE elbow, hypertech airfoil, t.b.bypass,!cat, flowmaster, !maf screen, relocated batt., 1LE front l.c.a.s', poly trans and torq.arm bushings, MSD 6AL, custom program, p&p maf, accel coil, and under drive pulley

mods that i have, just not on car yet:
msd wires, edelbrock mid. headers, edelbrock rpm catback

irocbob89

Just through on a set of sub frames and let it be just that. Both of the cars in my sig have south side machine sub frame connectors, eibach springs, kyb struts, shocks, control arms ect.... the 386 stroker has a 6 point cage sitting in the garage but we are only going to put in 4 points of it. the 386 is putting out about 400rwhp and about 460ft/lbs. The lt1 is stock but i wanted to put a good suspension under it before i mod it. Hope this helps.

BTW: both cars are t-top cars. If you do lounch at a track with street tires and a 400hp car, lol you will NOT hook trust me ive tried and ended up with a 2.72 60ft time so if you build an engine then through some slicks on too, dont worry you wont twist the car enough to cause a problem if you at least put on sub frames.

irocbob89

oops theres the sig

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89' red Iroc-z
386 stroker
Mini ram, 58mm tb
30#lbs,255 high flow fuel pump
slp cam, 1.6rr
edelbrock performer heads p+p 2.02 1.60
Hooker super comps, Mufflex 4' exhaust
Ford 9' 4.11 gears, detroit locker, 31 spline
Full suspension
B&M mega shifter,2800 stall
baer rear brakes,line lock
converted to speed density
Ed Wright dyno tuned


89' red Iroc-z
LT-1, 4L60E
free mods,chip,no cat, flowmaster
full suspension

Chris`s85Z28

That good I`ll put on sfc this winter when she`s in storage I might run the B.F.G drag radial but thats it Thanx for the replys

------------------
R.I.P Dale Earnhardt 3 Nascar isn`t the same without you
1985 Z28 My pride and joy
LG4 305 5spd T-tops 3:23 posi 3" exshust mild street cam Accel wires shorty plugs cap rotor and a H.E.I super coil FINALY GOING ON THE ROAD MAY 24 after a year owning it
5.0L BEWARE
http://Chevy-Camaro-Z28.CZ28.com
Speed limits Whats that???
Kills 1/0

Randy92Z

My Vert is pushing 400 flywheel hp and I have sub's, wonder bar and strut braces and my top fits the same every time it goes up. Mines straight. Im running 275/40/17 Goodyear gatorbacks.

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Convertible W/L98, Mini-ram, ZZ9 cam, TPIS 52mm TB, Comp Cams 1.52/1.6 steel roler rockers, Trick flow 23* heads, K&N's with chopped airboxes, Edelbrock ceramic TES, Flowmaster cat-back, Dynomax high flow converter, Accel 300+ ignition, Fastchips custom chip, Taylor pro 409 wires, March underdrive pulleys, MAC subframe connectors, Lakewood LCA & Adj. panhard rod, SLP 2500 stall, 3.42 rear gear, 90 Corvette rims, White face gagues, and NOS!

[This message has been edited by Randy92Z (edited September 03, 2002).]

mr diabolical

SFC will be plenty good for that level. sounds like whoever says you HAVE to have a cage or it will twist is just trying to sound smart.

RobsWS6

I have Lexan T-Tops in my car and both tops have the corners broke off. Before I did the last round of mods, I didn't have SFCs.

I was running 12.1-12.2@111+ at that time. I dynoed at 318rwhp and 455rwtq. I also noticed a buckling of the floor pan under the passenger rear seat.

Obviously the car was twisting pretty good with the 1.6 launches I was getting. I have since put Global West SFCs in and the twisting is gone. The t-tops don't make noise anymore. But I also haven't gotten back to the 1.6x yet either. The stock trans and converter were killing me with the new turbo.

More than likely you'll need a roll bar because of the times you'd put up at the track. If its a street car, I wouldn't bother. But it would be a nice safety item along with a really tight car.

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Rob
89 TTA #1387
11.98@118.66

85_tpi_350

SFC's should be adequate. A friend of mine runs an '82 with about 450 HP with bolt-in subframe connectors, and he hasn't had a problem yet. I'd get the weld-in type, they make things a little more rigid, just in case you feel like adding a little more power.

Also, ol' dude's right, no way you're gonna hook up with 40-series tires. I'd go with something like a 255/60R15 if not a 275/60R15. BFG Comp T/A Drag Radials are great meats I've heard. A cheap alternative is the Dayton Daytona S/R. Good soft compound, requires a little wheelspin to clean 'em off good before a launch.

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Horsepower is like cheese, you can add it to ANYTHING and it's a little more enjoyable.

-Posey

Chris`s85Z28

It won`t be a drag car I`ll bring her to the track mayby 1-3 times a summer just to see what she`ll run I hope 12.0- 12.5 I`ll be happy with that what kind of sfc are the best and how much are they?

I was really scared I`d twist her on a hard launch w/o a cage but as long as I run sfc I`ll be fine

and also I`m buying 255/60R15 Good year Eagle GT+4 or HP will they be good for the track till I can get some BF drag radial`s

------------------
R.I.P Dale Earnhardt 3 Nascar isn`t the same without you
1985 Z28 My pride and joy
LG4 305 5spd T-tops 3:23 posi 2.5" exshust mild street cam Accel wires shorty plugs cap rotor and a H.E.I super coil
5.0L BEWARE
http://Chevy-Camaro-Z28.CZ28.com
Speed limits Whats that???
Kills 1/0

Blownyellow

I too have had similar problems with my T-top Z. I can pop my passenger side window out of the T-top trim under acceleration, and have a nice crease in the passenger floor pan. I am not going to take any chances with my new combo which should be around 800 horse, and am installing a full cage.

RedIrocZ-28

Come on now guys, I am not trying to sound smart here, simply trying to prevent a twisted frame. My car has Torque dents in the rear quarters and a buckled floor. The buckled floor may have been from somthing else though. SFC's are a must. A small 4 pt roll cage sounds like a really good idea especially if you plan on going further with mods.



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-Brad C?
355ci '89 Iroc-Z Red, T-tops, power everything, A4,New 10 bolt w/ 3.73's
Trans-Go shift kit Corvette Servo,Accel 8.8mm wires,Flowmaster 80 series ,K&N's, !MAF Screens, Hollowed out airboxes,homemade Subframes. Kieth Black pistons 10.3:1, Comp Cams 270H (.495/.502 218*/224* 110*LSA) & valve springs, SLP 1 3/4" headers, TCI 2400 stall, Dual Roller timing chain, 2 3/4" I-pipe.
Full street trim best run:14.799/mph:93/60': 2.02 (last year) New Times to come.
New times: 13.732 @ 99.30 on a 1.878 60'
Pics of the Iroc