Who has installed 10" slicks on a comet or fairlane

[6667fan]

Doug, I had a 1.46 60’ the other night with the 10.5s. 13.5 psi, 3800 rpm clutch dump. Sub par burnout, just skidded forward as I did not get planted in box. My Hoosiers are 29”. I put a 29.5 in there but did not like how close to the dog leg the tire was.

[Falcon67]

On my 67 Falcon I use 28x15" slicks on the rear, or Hoosier 275-60x15 drag radials, although I prefer the slicks. The tires are Hoosier 18150D06, 28.00 x 10.00-15.  I run 12 lbs in the tires.  The wheels are 15x8 with 4.5" pack space and a tiny .125 thick spacer.  The inner fender lips are rolled. The leaf springs leave a tell-tale run on the inside sidewall when moving around.  Older M/Ts would grow enough to have rubber deposit on the very rear edge of the rocker panels at the wheel well front.  The Hoosiers don't do that.

Suspension is stock rear leaves (yea, still on Mama Ford parts) with Caltrack bars and Rancho shocks set on 7.  Fronts are 90/10 Comp Eliminator but will soon be Aldan American single adjustable coil overs.  I'll eventually switch to Caltrack monoleaf springs in the rear, just because one day those 57 year old springs are gonna do a Blues Brothers complete disintegration one day LOL.  With good air and a good bite, it'll leave with about 1" air under the front runners.  Car runs 7.3x~.4x depending on where we are and the density altitude.  Eventually we should pick that up about .75 with a new motor.

Car weights 3250 with fuel and driver.  DR use 16 lbs.  On tracks with minimal prep and/or way hot humid conditions like we have here, it's slicks.  Roll gently through the water past any puddles if possible, burn until bite - maybe 5,6 seconds - then stage.

[oldiron.fe]

        i am using hooser  29.5/10.5 s-15      co6      hook well --- but use 9.5-10.5 pressure            you can check with heat gun to see if your tire is heating even across face-good luck                                john/ oldiron        car is tubbed        what compound are you using?

[Falcon67]

You can also just look at the tire - a nice LED stick light helps - for a feather pattern across the tire.  When the pressure is right for the car, it'll be reasonably consistent across the face of the tire. IMHO, better than any heat gun shoot.  Also a reminder that the taller the tire, the bigger the footprint vs wide.  But if the Fairlane has a similar wheel well to a Falcon, 28" is about the limit unless you hike up the tail.  A 29.5 x 10 on my car at the existing ride height would shred its self on the rear edge of the rocker panel.

[6667fan]

Tail is hiked on my 67. I swapped in a replacement set of the rear section of each split mono leaf. Calvert offers them in PLUS sizes.

[manofmerc]

In two weeks we have a race it will be nice and hot ! The hoosiers are do6 compound micks are their stiff sidewall 3056st .For next race planning to use my new 90/10 front shocks calverts run 12 psi pull some timing out and lower my two step setting from2800 to 2400 .What has been so frustrating is this car has always been consistent until I installed the bigger engine .It really isnt that much of a bigger engine It runs about two tenths quicker than my old engine but that was enough to kill my traction .I have a really loose 9" convertor similar to my current 9" convertor .Thinking that should be my next move .Although I already had the new one loosened up .I have been looking online for ideas on moving my rear springs inward .Not much out there for ford or merc guys .Crites had a kit to move your springs in but I am probably to late for that since they closed the doors .Thanks for the ideas and thoughts Doug

[JamesonRacing]

I did mine without a kit years back.  Fabricated brackets for the inside, stock fuel tank was removed already, so added a crossbar in the rear to mount the shackles.  Then pinched the inner tubes for clearance.  Fit a 10.5x30 slick on a 10" wheel.

[Falcon67]

I like what you did there in the tail section - nice.  I've been thinking about that for a future mod when the 650HP motor gets in there.  My fuel cell setup is modular so I can service or move it around for clearance as needed.