Jhucks03

What size drag radials and wheels are y’all using. Specifically 68-72 Cutlass.

Rallye469

M/T 325 50's
15x10 wheel with 5.5" BS
they're tight but they fit and work well

-peter

69455

MT ET Street Radial
305 45 R17

wills30

can i get a side view of those tire.
i was looking at getting a pair of 315 60 15.
But i have mini tubs

Rallye469

wills30

where are you rubbing or hitting

VORTECPRO

30x9 C-7 Radial Hoosiers on a 10 inch rim, you can't do better

coppercutlass

275/60/15 m/t ss drag radial

Rallye469

The rub slightly on the inside wheel well.
Usually only when I dont air the back up after going to the track and then drive on the street. (20.5psi)
At normal inflation (26psi) they dont rub.
-peter

wills30

295
Frank Trimble car.
Haven't seen this in person .
But I've spoken to him .about his set up

Jhucks03

Coppercutlass,
What width wheel? And are there any upgrades to the suspension?

coppercutlass

The wheels are 8 inches wide. From suspension is ebay tubulars tall upper ball joints , 5.5 inches of travel with a limiter 6.75 without , afco 80/20 shocks and Moog 6 cyl chevelle springs. In the rear I have ssm bars , a solid 1 inch sway bar , adjustable uppers , 69 442 rear springs , qa1 single adjustable shocks. Best 60 ft. With my 350 has been 1.56

chadman

29.5x10.5 MT Pro Bracket Radial on a 15x12 wheel

olds 307 and 403

Some wide tires indeed. What are you guys running for air pressure in the back?

Rallye469

25 on the street...20.5 at the track.
Anything less than 19 at the track and the tires start to cup.
-peter

chadman

I run 18 psi

fleming442

I've seen it, and it is 100% bada$$! I think he's running 295/65s?
No one has Nitto 555Rs? I guess that says it all, huh? I've been playing with air pressure and launch rpm, but still can't get it to hook for crap.

coppercutlass

Flemming if you have a stick car perhaps try a bias ply. My mph between slicks and drag radials is the same also I have ran the nittos they work well but if you drive them alot they loose their bite where as the mickey thompson s last longer in that dept.

oldsmoboogie

I have 295/55 r15 Mickey Thompson drag radials on a 10” wide steel wheel.

fleming442

I dig it! 😎

71 OLDS

Older pic - with 275/60/15 drag radials:
28WQSNl.jpg

previous setup: Nitto 305/45/18 Drag Radials (w/glued on BFG RWLs) on 18x10s
ilcmQmo.jpg
3t380xW.jpg

current setup = Nitto 305/40/18 drag radials on 18x10s in these pics but soon to be 18x11s:
M2j3iiJ.jpg
shlTLwr.jpg
0TRG7wi.jpg
8kKriqQ.jpg

Koda

Hey man, those BFG letters are too white to be real!

71 OLDS

SOS pads!! Keep 'em nice and white!

olds 307 and 403

I can see why you guys run them. I actually ordered the MT drag radials but ET Street Bias ply arrived instead. With any of the bias ply slicks, we were running 8 to 9 psi for best traction at our track. I was running more psi, I followed what the other guys were doing and picked up my 60 ft a bit.

coppercutlass

On marginal prep the bias plys work on 15 is the suspension is there. I run my drag radials at 18 but that's a habit for me I need to bump it up. Oddly enough. My mph and 60 ft is identical between the 2. My suspension was set up for the bias plys . All I do for the radials is that 2 inches of travel out and set the shocks a few clicks up.

olds 307 and 403

My 88's suspension sucked. The car launched like it was on glass. I was running around 15 psi as well but talking to the other guys with faster cars of various makes, they ran 8 or 9 psi on the airport, which was our track. My 60 ft improved but I did notice slight rubbing on the frame with that low of pressure. If I can get the 3.90 gears and posi in and a wideband in ideally, I want to run it, I miss the track. If Estevan is open, I will try to make it. It isn't just the Pandemic, with oil being down, looking better lately, that City is hurting, was less toys cruising the streets last trip. That will basically leave Saskatoon, 4 hours away, pretty far. I also want to get my 70 to primer as well. Then there is the whole engine build as well.