Im looking into what size slick i need for my tubbed LC 355. A local drag racer is trying to ask a few people aswell, but he said if i get the sizes all wrong it'll slow me down. He also mentioned something about the taller the slick, the longer the tail. Dont know what he means by that.
I was looking at 15x10x26, but need to extend wheel arch.
What size do you use?
need help with LC/LJ slicks sizes
Started by
_shan620_
, Aug 21 2012 10:31 PM
27 replies to this topic
#2
dattoman
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- Name:Neil
- Location:Perth Western Australia
- Car:LX SS , 76 Cadillac , 3 x dattos
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Posted 21 August 2012 - 11:50 PM
Whats your diff ratio and expected rpm thru the traps ?
#3
_shan620_
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Posted 22 August 2012 - 11:41 PM
Looking at a 3.89 diff and the rpm ill need to look at the dyno printout again. I'll put it up in morning.
#4
_shan620_
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Posted 23 August 2012 - 12:07 PM
The bloke that built engine said a 3.89 diff should get me on the finish line at peak power, but the diff hasnt been made yet coz im waiting for wheels so the diff can be made to suit.
The dyno printout shows a highlighted line at 6200rpm, 416.8 ft torque, 492.1 hp
- highest hp at 6700rpm, 407.8 ft torque, 520.3 hp
- highest torque at 5700rpm, 435.5 ft torque, 472.7 hp
The dyno printout shows a highlighted line at 6200rpm, 416.8 ft torque, 492.1 hp
- highest hp at 6700rpm, 407.8 ft torque, 520.3 hp
- highest torque at 5700rpm, 435.5 ft torque, 472.7 hp
Edited by shan620, 23 August 2012 - 12:11 PM.
#5
_CHOPPER_
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Posted 23 August 2012 - 03:02 PM
Since you're giving us a dyno printout, do you know what tyhe vehicle weight will be on the start line with fuel and driver onboard?
#6
_LJ355_
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Posted 23 August 2012 - 06:30 PM
i have a similar combo with 4.11 diff i use a 275/50/15 mt streetradial which equals a 26x10.5 slick
i have run 10.6 @126mph on these on my new combo im going to try a slick but the radials are great
i have run 10.6 @126mph on these on my new combo im going to try a slick but the radials are great
#7
_shan620_
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Posted 23 August 2012 - 08:33 PM
Chopper I won't know until car is finished.
Lj355 do the rear guards still need to be lengthened for them tires?
Lj355 do the rear guards still need to be lengthened for them tires?
#8
_LJ355_
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Posted 23 August 2012 - 09:11 PM
yes they do unless you lift the back right up my guards are stretched 60mm
#9
_OLC383_
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Posted 24 August 2012 - 05:53 PM
On mine before it was tubbed we ran Hoosier 26 x 9 /15 slicks, i have some here less then half worn if your interested, i now run 28 x 10 / 15's, you might even try some MT 26 x 8.5 / 15,
PM me if your interested $300 for the Hoosier 26 x 9 /15
Wayne
PM me if your interested $300 for the Hoosier 26 x 9 /15
Wayne
#10
_shan620_
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Posted 25 August 2012 - 02:18 AM
OLC383 yeh mines mini tubbed, but was was told the tires hit on the outter wheel arch.
#11
_OLC383_
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Posted 25 August 2012 - 02:00 PM
All depends on the off set of your rims,
A mate of mine has 26 x 10 / 15 on his LJ with std wheel arches, it has been tubbed & moved his rear shocks to the other side of the control arm & up through the boot, i run a weld draglite 15 x 8 with 5" back space, i also moved the bottom shock mount up on to the top of the lower control arm mounting bracket, it had a std tub just widened & moved in to the rail,
You can also put a 5mm (or more) shim under the rear coil to give a bit more height clearence.
What rear suspension set up do you have
Wayne
A mate of mine has 26 x 10 / 15 on his LJ with std wheel arches, it has been tubbed & moved his rear shocks to the other side of the control arm & up through the boot, i run a weld draglite 15 x 8 with 5" back space, i also moved the bottom shock mount up on to the top of the lower control arm mounting bracket, it had a std tub just widened & moved in to the rail,
You can also put a 5mm (or more) shim under the rear coil to give a bit more height clearence.
What rear suspension set up do you have
Wayne
#12
_shan620_
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Posted 26 August 2012 - 01:57 AM
The diff is getting made to suit my 18x10 with 5 1/4 dish. I'll be using coilovers in the rear. It's tubbed right up to chassis rail.
#13
_OLC383_
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Posted 29 August 2012 - 04:07 PM
mate,
if your running 18 x 10's, you should have no problems fitting 26 x 9 or 26 x 10, with 18" street rims you might even get a 28 x 9 in there, just get some rims with 5" back space.
Wayne
if your running 18 x 10's, you should have no problems fitting 26 x 9 or 26 x 10, with 18" street rims you might even get a 28 x 9 in there, just get some rims with 5" back space.
Wayne
#14
_shan620_
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Posted 29 August 2012 - 07:41 PM
yeh i can fit 18's easy under the rear. But when they say a 26 inch slick is 26 inchs measured from the tread directly across the side wall, rim and other side wall to the tread on other side?
#15
_injlc304_
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Posted 30 August 2012 - 01:56 PM
wayne,
you said your mate ran 26 x 10 15 tyres on the std arch? did he have to jack the rear up to get them to fit? i struggled to run the micky t 235 60 15 on mine and that was with 40mm of spacing under the springs. If you could pm me any info at to how or photos that would be great.
you said your mate ran 26 x 10 15 tyres on the std arch? did he have to jack the rear up to get them to fit? i struggled to run the micky t 235 60 15 on mine and that was with 40mm of spacing under the springs. If you could pm me any info at to how or photos that would be great.
#16
_shan620_
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Posted 30 August 2012 - 02:35 PM
Are 4 door wheel arches bigger then coupes?
#17
_OLC383_
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Posted 30 August 2012 - 05:43 PM
Shanon, from what ive heard, yes 4 doors Toranas do have bigger arches, by how much i dont know & yes 26" is measured from the ground to the top of the tyre ( the diameter 26").
Chris, im 99% sure his arches have'nt been streched, i do know that he runs steel 15" rims with a custom off set, & he has moved his rear shocks to the inside of his control arms instead of the std position & also squared his tubs & moved them into the ralis, the side walls of his slicks are very close to the rails, sorry dont have any pics of it
wayne
Chris, im 99% sure his arches have'nt been streched, i do know that he runs steel 15" rims with a custom off set, & he has moved his rear shocks to the inside of his control arms instead of the std position & also squared his tubs & moved them into the ralis, the side walls of his slicks are very close to the rails, sorry dont have any pics of it
wayne
#18
_injlc304_
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Posted 31 August 2012 - 07:43 AM
no dramas thanks wayne. having big issues with traction but like i said gotta jack it up like a 4x4 to fit the 235 60 on and it rubs hard. oh well keep fiddling i guess.
Cheers mate
Cheers mate
#19
_coupe202_
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Posted 31 August 2012 - 12:43 PM
Ive got 275 x 50 x 15 under my LJ 2 door but ive trimmed the front and rear of the wheel arch
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#21
_coupe202_
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Posted 31 August 2012 - 02:45 PM
the diff as been shortened to what length unknown
#22
_ChevLX_77_
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Posted 31 August 2012 - 08:40 PM
Im trying to give away some 26x10.5 inch slicks. Dont fit my car and are in the way still have a few passes in them, if your interested PM me
#23
_shan620_
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Posted 01 September 2012 - 01:45 AM
Chevlx_77 I'll pm you Saturday wen I'm on computer. Even just having the tire to sit in the guard to see how much I need to modify would be great.
#24
_injlc304_
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Posted 04 September 2012 - 03:56 PM
whats involved in moving the shocks to the inside of the control arms? Is it a big job? Has anyone got any photo’s? would give a fair bit more room to move if I did this
#25
_OLC383_
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Posted 05 September 2012 - 08:33 PM
I had mine mounted on top of the control arm mounting bracket, 2 x 3mm flat up rights with a bolt going through them holding the shock in between them,
If that makes any sense.
Wayne
If that makes any sense.
Wayne
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