What tire size with 4.56 gears

[detailedmotor]

I am finishing my Plymouth Duster with a 340 4 speed. The 340 is 10.5 to 1 ported Jheads. The car will be driven very little on the street for a couple car shows but I want to get on it at the track and am installing 4.56 gears I have laying around. I just need to know what street slick size to put on the rear. Any help is appreciated. 15 inch rear rim.

 

[JBurch]

I run a 28x9 Hooser on my 65 Barracuda, that takes a 3/4inch spring inboard relocation to fit. Cross the strip about 6500rpm. Being a later "A" body may not need to relocate springs.

 

[pettybludart]

JMO I would find some spare rims and run slicks for the track.With 4.56,s I,d run 30x10.5x15.The drag radials will wear fast driving both street and track.Just my 2 cents.

 

[Guitar Jones]

That 340 is going to want to turn some RPM's so a 29.5/30" tall tire is what I would go with.

 

[YoungBlood]

30" tire.

 

[Dusterdude72]

I have 4.56 with 28" tall bfg drag radials. even they are a tight fit so im sure going larger could get even more tricky. also my springs have been reloacted inbound.

 

[Guitar Jones]

You will have to rework the wheel opening at the very least to fit it.

 

[joes68340s]

Been running my 68 Barracuda 340 auto 4.56 gears with 11.5x28x15 ET streets they are actually 27 inchs. cross finish at 6200 rpm. stock heads 11-1 comp, mopar solid 528 cam. Needs to be freshend up low to mid 12s.