Drag Racing Tech - How much can you narrow without mini tubbing?

I figured I would post this here to get a better response, and my car is strictly for drag racing. I am getting a Moser 9in, and I want to get it narrowed and run a 28x10.5x15 slicks, but I do not want to minitub. Wheel backspacing will be determined once I get the rear. Wheels will be 15x10 Centerline Convo Pros. I used to have 15x8.5 with 5in BS & 28x10.5x15 tires, and they stuck out too far for my taste. Let me know what you guys think.

Matt

the one I just ordered was narrowed 2 1/2inchs each side 5 total

I have a 3 inch per side narrowed rear end (6 total).. running a 15X10 weld with a 6 inch BS and a 275/60/15 (28 inches tall) and its not mini tubbed.

http://www.bowmanmotorsports.com/Camaro/SIDE2a.jpg
http://www.bowmanmotorsports.com/Camaro/SIDE3a.jpg

I have a 3 inch per side narrowed rear end (6 total).. running a 15X10 weld with a 6 inch BS and a 275/60/15 (28 inches tall) and its not mini tubbed.

http://www.bowmanmotorsports.com/Camaro/SIDE2a.jpg
http://www.bowmanmotorsports.com/Camaro/SIDE3a.jpg

If I ran a 15x10 with 5in BS that would still fit ok don't you think?

outlaw did you have to cut anything under teh car to get it to fit? probably went ofset LCA bushings right? and shots of under teh car?

i know on our LT1 car we went 2" narrowed on each side and 15x10 5BS and it looks nice. nothing banged or cutup. stock LCA position too.

If I ran a 15x10 with 5in BS that would still fit ok don't you think?


Beats me.. only know what I have done.. maybe someone with that setup will chime in

outlaw did you have to cut anything under teh car to get it to fit? probably went ofset LCA bushings right? and shots of under teh car?.

Just the factory bumpstop pearches.. i dont have offset LCA's bushings.. just the normal/standard Wolfe bushing but I do have the upgraded big bolt kit.But that has nothing to do with the LCA location. I also just put the Wolfe rear spring pearches in the car, but I had this same setup BEFORE I did the pearches with no problems.

with the 5 inches of backspacing i'd knock 2 inches off of each side. i have 1 1/2 off each side of mine with 15x10 convo's with 5 inch backspacing. with the 28x11.5x15, its really close but doesn't look like it'll rub the outter fender. i got them from Navy David (?) and his was narrowed 1 1/2 on each side also

I got mine narrowed 3 inches per side, 15x10 with 5 inches of BS and a 325/50 drag radial..BUT I am minitubbed.....just start from there and add/subtract from either the wheel or the axle end. 325/50 is THE max width tire you can safely fit on these cars. The tread is 11.75, section width is almost 14 inches I dont have much clearance even with the minitub.

http://img215.imageshack.us/img215/8827/picture0098lf.jpg


David

I think to be safe, I might just go with 2 inches. I would go 3 if Centerline made their convo pros with 6in of backspacing, but the max is 5. Thanks guys for all of your help. :)

Actually a pretty good post here. Outlaw did u have to smack the inner wells pretty good? have to do any cutting? And I thought your car was a tin floored race car? Or was I wrong on that? and Last question how would fitting like a 29.5 inch tire in there work? Is there enough wheel well? Or would that need a Minitub?

figure it this way.

stock placement is 15x10 a/ 7.5" backspacing

so if you narrow the rear end 2", you'd need 2" LESS backspacing to keep it in the same area.

so you'd go 15x10 w/ 5.5" backspacing. if you run a 5" backspacing rim, you are SUCKING the rims in an extra 1/2"

from your statement about the centerline and 6" BS, i think you got the direction wrong. if you narrowed the rear 3", you'd NEED a 5" backspacing rim to be close to what was original on the car. if you went to that 6" like you said u would if they offered it, the rim would be sucked in a total of 1.5" from the "original" area

Chris

Ok, thanks Chris. That's what I needed. :)

Actually a pretty good post here. Outlaw did u have to smack the inner wells pretty good? have to do any cutting? And I thought your car was a tin floored race car? Or was I wrong on that? and Last question how would fitting like a 29.5 inch tire in there work? Is there enough wheel well? Or would that need a Minitub?


I have yet to hit anything with a hammer. I just cut the bumpstop brackets out and that was it. My car has ALL the stock floor in it from the front to the back. I dont know cause I dont have the 29's but as a guess, i would have to do some work with a hammer and trim the fenders. But if I was going to do a bigger tire I would just mini tub it, but thats me.

Two weeks ago a guy went 7.97@180 on the same 275/60/15 tire and stock suspenstion. :)

I have yet to hit anything with a hammer. I just cut the bumpstop brackets out and that was it. My car has ALL the stock floor in it from the front to the back. I dont know cause I dont have the 29's but as a guess, i would have to do some work with a hammer and trim the fenders. But if I was going to do a bigger tire I would just mini tub it, but thats me.

Two weeks ago a guy went 7.97@180 on the same 275/60/15 tire and stock suspenstion. :)


Ok kewl all good info. Thanx for the help. And by chance can you PM me some info on the guy that went 7.97? Don't wanna take over this thread

hmmm maybe i'm a dumbass.. but what's the point of narrowing if you still have the same size rim? you just change the BS...

hmmm maybe i'm a dumbass.. but what's the point of narrowing if you still have the same size rim? you just change the BS...

1. Tuck the wheel and tire in a little more.
2. A nice deep dish wheel.

hmmm maybe i'm a dumbass.. but what's the point of narrowing if you still have the same size rim? you just change the BS...

"2. A nice deep dish wheel." Ding,Ding,Ding WINNER!

I was ordering wheels and the 12 bolt at the same time so since the deep dish looks so good, I had the rear made 5"s shorter and it alowed the wheels to look like this:
http://i21.photobucket.com/albums/b258/rufretic/DSC02035.jpg

I think the deep dish looks much better. I'm sure there must be other good reasons to do it but thats why I did it. :)

"2. A nice deep dish wheel." Ding,Ding,Ding WINNER!

I was ordering wheels and the 12 bolt at the same time so since the deep dish looks so good, I had the rear made 5"s shorter and it alowed the wheels to look like this:
http://i21.photobucket.com/albums/b258/rufretic/DSC02035.jpg

I think the deep dish looks much better. I'm sure there must be other good reasons to do it but thats why I did it. :)

Same reason I'm doing it. :)

"2. A nice deep dish wheel." Ding,Ding,Ding WINNER!

I was ordering wheels and the 12 bolt at the same time so since the deep dish looks so good, I had the rear made 5"s shorter and it alowed the wheels to look like this:
http://i21.photobucket.com/albums/b258/rufretic/DSC02035.jpg

I think the deep dish looks much better. I'm sure there must be other good reasons to do it but thats why I did it. :)
I liked your wheels so much I ordered the same set and a narrowed rear from SJM. you also save some weight amd rotating mass with a narrowed rear

Thanks, it's nice to know others think they look as good as I do. I'm really happy with how they came out. I'm installing my 12 bolt and the wheels tomorrow, I'm so excited I think I'm gonna have to drink myself to sleep tonight lol. I'll post pics of the final product.

I would love to see them on the car cant wait

Thanks, it's nice to know others think they look as good as I do. I'm really happy with how they came out. I'm installing my 12 bolt and the wheels tomorrow, I'm so excited I think I'm gonna have to drink myself to sleep tonight lol. I'll post pics of the final product.

Please do, I love the look of hoosier meat and shiny rims on a f-body :hump:

Thanks, it's nice to know others think they look as good as I do. I'm really happy with how they came out. I'm installing my 12 bolt and the wheels tomorrow, I'm so excited I think I'm gonna have to drink myself to sleep tonight lol. I'll post pics of the final product.

Any pics yet? What BS did you use on the rims?

lets see them wheels

Sorry guys, I know your waiting for pics but I have been going through hell with my 12 bolt install. I should have it finished up tonight. I do have the wheels on in back and they tuck very nicely. I'm having trouble getting the stock driveshaft attached so I havent dropped it down yet. As soon as its all together I will get pics posted up.

What about a rear made for a 3rd gen?

What about a rear made for a 3rd gen?

I don't understand your question. Nevermind, your asking about the mini tubbing. Someone else will have to help you cause I don't know.

Isn't the 3 generation axle narrower then the fourth?

Oh yeah!
http://i21.photobucket.com/albums/b258/rufretic/DSC02039.jpg
http://i21.photobucket.com/albums/b258/rufretic/DSC02046.jpg
http://i21.photobucket.com/albums/b258/rufretic/DSC02040.jpg
One more just to show how nice they tuck.
http://i21.photobucket.com/albums/b258/rufretic/DSC02044.jpg
I'm thinking about taking out the rubber piece on top of the spring to eliminate the gap, what do you think, good or bad idea?

And if your wondering whats all over my car it's ice. It was like 4 degrees and I had to wash it before I stored it. It would freeze before I could get to the rag to dry it, lol. Luckly my storage spot is heated so it all melted and dried. Well, let me know what you guys think.

Looks good man. So that is 5" total narrowed, with what BS on the wheels?

Thanks, 5" backspacing in the rear I believe.

OMG! i want :D

too bad they cost so much and i would only use them at the track...

BTW: anyone who has narrowed still use some kind of "real street" rims? With such offset i guess anything would have to be custom... which $$$

Oh yeah!
http://i21.photobucket.com/albums/b258/rufretic/DSC02039.jpg
http://i21.photobucket.com/albums/b258/rufretic/DSC02046.jpg
http://i21.photobucket.com/albums/b258/rufretic/DSC02040.jpg
One more just to show how nice they tuck.
http://i21.photobucket.com/albums/b258/rufretic/DSC02044.jpg
I'm thinking about taking out the rubber piece on top of the spring to eliminate the gap, what do you think, good or bad idea?

And if your wondering whats all over my car it's ice. It was like 4 degrees and I had to wash it before I stored it. It would freeze before I could get to the rag to dry it, lol. Luckly my storage spot is heated so it all melted and dried. Well, let me know what you guys think.

:hump:

Car looks sick as it sits! Time to change the sig!

Looks fantastic. The combination really works well with your car. Glad that I could help out.

The wheels really aren't that pricey...if you compare it to a prostar, then it may seem..but if you compare it to a high-end weld alumastar...it is much better:-). As you can see, wheels make or break a cars appearance. Biggest mod you can make to a car and show off which of course everyone notices.

In person, I'm sure it looks 1000 times better too...most of our Bogart customers agree and I hear it quite often "man they look even better in person!".

Thanks for the comps guys.

"man they look even better in person!"
It's so true, you just can't capture the shine in a pic. Thanks for all your time and help Steve, cusomer service goes a long way in my book. I will be coming back to you for anything else I need that you sell.

looks great!

:cheers: that thing is sweet! I like the the stance as it is, but it might look a little bit better if the spring rubbers were removed.

:hump:

Car looks great!

rufretic - i think it looks right that way - don't take out the rubber spring perch. my .02.

lol your car stole the whole topic of this thread.......I can see why though sweet ride :cheers:

http://www.nd.edu/~caschenb/conrad.JPG

I love narrowed rear look on a 4th gen. My car is minitubbed for 10.5W tires. Next season it will see some 10.5 non W tires and drag radials to run in some local events.

fastblackTA how much did you narrow your rear?

My 9" is narrowed 3" on both sides and 5" back spacing without mini tubing, that's about as far as you can go without rubbbing or mini tubbing. 5" back spacing offers you more selection in wheel choices. Aluma Stars all the way around here.

http://www.nd.edu/~caschenb/conrad.JPG

I love narrowed rear look on a 4th gen. My car is minitubbed for 10.5W tires. Next season it will see some 10.5 non W tires and drag radials to run in some local events.

Your tires look huge compared to mine. How tall are those, 29"? By the way the setup looks great.

Your tires look huge compared to mine. How tall are those, 29"? By the way the setup looks great.


See you worried about the space in the wheel wells just run a taller tire :)

Thats why I asked, I couldn't go any taller than what I have now (27") without cutting the bumper. I wouldn't even try doing my own body work so that would add quite a bit to the total price. Plus if it's not done right it can look really shitty.

Thank you.

The rear is narrowed 3 inches per side. 5 inch backspacing on the wheels. The tires are 28x10.5W's.

Let me know if you have any more questions.

Must be pretty close to rubbing with those W tires.

Thank you.

The rear is narrowed 3 inches per side. 5 inch backspacing on the wheels. The tires are 28x10.5W's.

Let me know if you have any more questions.

Must be pretty close to rubbing with those W tires.

He said the car is minitubbed, I don't think those tires would fit without minitubbing.