I ain't got no traction satisfaction !!!

[Green Machine]

Basicly stock 1971 C20 LWB body and chassis, turbo 350, 2000 stall, 3.54 Dana posi an a healthy 383. I know I need more rear tire, but want to retain the sleeper look. Have 245/75 R16 8 bolt front and back now. I can get a pair of painted 8 inch 8 bolt wheels that take the stock hubcaps and go to a 265/70 R16 tire. Or maybe a little more, any suggestions ? I want to stay about same tire height.

The truck pretty much spins both tires all the way through first gear and just catches traction just before it shifts at about 5500 rpm. Would some half ton rear springs help, maybe some half ton front springs too ? Need to get some weight transfer going on or something. I can still beat most everyone out of the hole while spinning the tires, but if I could hook up, that would be much better !!! Any thoughts ? Had it to the track twice this summer, runs about 9.50 in the 1/8, pretty good I think for a 4200 lb truck and no traction.

Any thoughts appreciated - Thanks.

[6872xtc]

My experience is limited, but mine gained traction by letting air pressure down in the rear. I'm not sure how well your tires will respond though. I started at 20 psi and dropped 2lb after each run, watching 60ft times and ET's equally.

[68C15]

trust me, 275's will still light up. mine do.
try a 3" drop or play with the track bar position on the X-member.
another place of concern is the tires. granted dropping pressure will help but I fear that 16" truck tires dont have much bite.
you could also get highly involved with timing and fuel curves. drop back some at lower revs.

[Longhorn Man]

the fact of the matter is, launching on street radials is always gonna be a PITA. You'll gain more by learning to launch instead of looking for other street tires that'll do the same thing.
Now, if you can have some dedicated drag tires for the rear, that you chainge out at the track... then after a good burnout, you'll be hookin up good.

[Old Yeller 1970]

Do you have a front anti-sway bar? If so, you'll want to remove it as it prevents the front end from lifting and shifting weight to the back.

[MotorSeven]

Have you tried just putting some weight right over the axle? 80lb bags of sand work great & won't slid around.

RD