gator's 99TA

iTrader: (2)

so do most racers.

gator's 99TA

iTrader: (2)

i think you are confusing this discussion with 17" wheel tire sizes.

zssman

iTrader: (9)

02 ss. stock width 12bolt w/bmr adj control arms. non adj panhard bar. bfh trick to the front of wheelwell. stock springs w/ garden hose mod. Still have the bump stops. fenders rolled. more pics at my photobucket site.

CaMaRo67RS355

iTrader: (75)

so is anyone with an m6 hooking with 275 or 325 drag radials???????????????????????

blk00ss

iTrader: (66)

I cut consitant 1.6's on my 325's. Been as low as a 1.62. I'm six speed.

cbra-klla

iTrader: (52)

damn i cut 1.50's on 265 radials thorugh an m6 with stock shocks and springs all the way around...

CaMaRo67RS355

iTrader: (75)

what kinda suspension do you have?

blk00ss

iTrader: (66)

Qa1's all around. Both sets are single adjustable. I run the fronts set on 2, and rears on 7. Bmr lower control arms, bmr full length TA set at -2 pinion angle. No front sway bar and stock rear bar.

n2ocamaro

I have an auto it takes a lot of work to get my 325's to hook. It generally takes me 2-3 passes and making adjustments to get it hooking. I am going to a full slick next year (28x10.5x15).

LS1RedZ

iTrader: (19)

Ok......

Just wondering why and the difference. Ive heard abunch of different things. Just curious!

Pro Stock John

iTrader: (34)

I've run 28W's and 325's on the same car, TH400 trans. The radials liked more air, like 16 vs 12 in the slicks. On radials the car was less forgiving if it spun a bit. On average I'd run the 28W's at 12 psi cold, and the front shocks at 1/1 and the rears at 6/6. With the 325's I ran them at 16/15, and front shocks at 1/1 and the rears at 7/7.

Chris05ssTruck

iTrader: (9)

I am in the same process right now. Cut a 1.62 rolling the clutch a bit on a 275 MT DR 26' tall not 28'. I have been wanting to do a 325. I have coil overs front AND rear, adj lower's, and adj. panhard, rolled fenders as well. BS street Lites 15' with the correct Fbody backspacing 7.5. How hard should this be for me to do? Does the bumper have to be cut? I see most of you have cut bumpers to clear a 28' tall tire.

CaMaRo67RS355

iTrader: (75)

yeah im curious to know this as well ive seen some when running 28" or taller tires they have to modify the bumper is this true in all cases? if not why in some and not others

blk00ss

iTrader: (66)

No you woill not have to cut the bumper. I have ran 325's on pro stars, alumastars, and now Holeshot wheels. Never have I had any contact with the bumper. And I have ran 28x10.5 slicks and never had contact on the bumper or fenders anywhere.

jjcamaro02

iTrader: (34)

Stick with 275 you might have to heat them up a little more at the track but they will work. I have cut 1.52 60 ft. on 275/50/15 and handle great on the street.

Chris05ssTruck

iTrader: (9)

Yes, but most of you guys are auto..radials work great from the get-go. The OP and myself are 6sp.
blk00ss- How low is the car? Most with easy sucess are on stock springs, i like my car sitting in the dirt, granted i can move the coil overs to where ever needed,

gator's 99TA

iTrader: (2)

if you are a stick car, you want the 28S sidewall. remember its the sticky material that plants the car but its the sidewall that rebounds and propels the car forward. its why, if you can hook teh radials, you will fly. the problem is the radials dont like the immediate impact of the stick compared to a hard hitting converter. the converter can keep the tire planted while the stick car shocks it and the radial will NOT recover.

if i were a stick car, i would not waste my time with a radial, no matter the size. you will end up having to slip the clutch and burning that up. the slick will take the impact, spin slightly and recover, thus producing a MUCH better 60' time. the radial will not.

PS - i am talking hard 60' type cars.

Pro Stock John

iTrader: (34)

I think getting radials to work on automatic cars is not very hard. Sure as the car gets quicker and quicker it gets harder but on average it's easier to get it to work.

I think manual transmission cars are different, and a lot harder.

I think to get it figured out, you might want a 2 step to get the leave-rpm consistent, and you'd need to experient with a lot of settings for the shocks and travel limiters. Best bet would be to work with Madman (www.madmanandcoracing.com).

CaMaRo67RS355

iTrader: (75)

actually i did think of that and me and him have already been pm-ing each other and just as you said alot of experiments will have to be made with the shocks and stuff he said this as well

Camaro396

iTrader: (14)

I didn't really do **** but bolt my 325s on. I use 15x10 7.50" Weldstar Wheels (stock rear-end length) so I didn't have to grind my brakes or use spacers. Then I just gave my inner fenderwells a couple taps with a rubber mallet, tossed them on and was good to go. Took me about 4 minutes to get 325s to fit my car. Still have bumpstops, and havn't rolled my fenders. Stock springs minus Isolators.