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Author Topic:   Chassis Ideas For New Street Stock?
Spi-nex
Dirt Roller

Total posts: 23
posted October 28, 2005 09:44 AM  
I will be building my new street stock this winter and was wonduring what other guys do to make their chassis better than stock chassis? My first car was bone stock and I know a lot of the front runners have their rear ends tweaked and front geometry changed. So I was wonduring what are some things I can do?

I plan on racing on everything from a tight 1/4 mile to a big 5/8th mile.

I appreciate any suggestions and reasons on what you suggest. Thank You.

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dirtyboy58
Dirt Full Roller

Total posts: 40
posted October 28, 2005 05:30 PM  
best bet do alot of research my cars are tricked but for a certain type of track if you plan on running sevral tracks iwould stay netural and make changes according to track and conditions

racer17j
Dirt Forum Champ
Total posts: 5390
posted October 28, 2005 07:59 PM  
Here is what I was thinking of doing, let me know if I am on the right track or not:

For the front end:
1.) I was thinking of going with dropped spindles for an 1980 Impalla. That should raise the roll center, improve the camber gain and lower the car. Plus the Impalla spindles are stronger than the metric ones and will also bolt in with a stock ball joint for a metric chassis. Now I know that if I go that rout that I will need to move the lower control arm out about 3/4'' to improve the camber gain on the right side which isn't any biggie.

2.) Solid Bushings (replace the stock ones with the solids in the pivot points)

Rear End:
Now I heard that turning the rear end would help with side-bite and turning into the turn, but on the big 5/8ths that would be a huge drag on the having it tweaked like that. (Im full throttle well over 10 seconds on the straightaways)

I must use stock trailing arms and Ford 9'' is OK.

Now here is something I have never seen actually done, but I heard the old timers did this back in the day.
And that is I want to take a 1940's Ford 9 which actually bolts the 2 halves of the rear (the first version of the Quick-Change, but it is STOCK and would be really nice for changin gears from big to small track) And it will fit better than the Ford 9 truck rear where the wheels stick out past the fenders. Not only is this rear end come stock with 5.13 gears and 4.71 gears, but its heavier and will increase my rear weight %.

I also was thinking of switching the rear drum brakes to the disc, but I am not allowed to run a bias adjuster, so would it be worth it to convert to disc?

Are these all good ideas or am I out of my mind??

Im still a rookie trying to understand all the set-up stuff so any information would be greatly appreciated from all the cagy veterans

Any suggestions and feedback would be really appreciated! THANK YOU!

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Jonathon R. Huston
#81 Factory Stock

[This message has been edited by Spi-nex (edited October 29, 2005).]

ryan
Dirt Forum Champ
Total posts: 776
posted October 29, 2005 11:43 AM  
Having a heavy rearend will give you more unsprung weight which is not good.

STREET16
Dirt Maniac

Total posts: 158
posted October 29, 2005 12:48 PM  
First, don't go with the old style rear! Use the later one. Mount it in square. To get rear steer, take the lower control arm for the right rear and drill 6 1/4" holes in the rubber of one of the bushings. This will allow the right rear wheel to move rearward under braking - making the car looser on entry, and allow it to move forward under acceleration - making the car tighter coming off the turn. You can increase the effect by doing both bushings and even further by putting neoprene bushings in the left rear lower conrtol arm. The nice thing about this, if you don't like it, it's cheap and real easy to undo - just replace the bushings.

Spi-nex
Dirt Roller

Total posts: 23
posted October 29, 2005 01:04 PM  
I understand what you are saying.

How much travel will the rear have by doing this? Will the bushings have to be replaced often? Do I drill the hole in any ole pattern or equally spaced right in the middle?

Thank You for the tip,,,I never thought travel was possible in the rear with stock stuff.

Im a very low budget racer so everything is helpful.

[This message has been edited by Spi-nex (edited October 29, 2005).]

STREET16
Dirt Maniac

Total posts: 158
posted October 29, 2005 01:46 PM  
I did 6 evenly spaced on just one of the right rear bushings and liked it so much that I never went any further. The bushing lasted a full season - 20 races. This is an old "old school" trick that has been around forever. I think I heard about it from Sleepy Gomez. I think he's writing for Stock Car Racing Magazine now, and he's a really good source for some tips that wont break the bank. I don't know how much travel you will get, but it will make a difference.

[This message has been edited by STREET16 (edited October 29, 2005).]

Spi-nex
Dirt Roller

Total posts: 23
posted October 29, 2005 02:14 PM  
Awesome. Thanks again, and I will try that tip out for next year.

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Jonathon R. Huston
#81 Factory Stock

Spi-nex
Dirt Roller

Total posts: 23
posted October 29, 2005 05:54 PM  
OK, I don't quite understand how drilling the holes allowes the rear to move because the bushing is still intact. So do I have to enlarge the hole on the trailing arm or what?

wermm
Dirt Maniac

Total posts: 107
posted October 29, 2005 06:52 PM  
drilling the holes in the side of the bushing next to the sleeve will soften the rubber allowing movement under braking and accel. you do have to keep an eye on them as they will wear out faster but you should get a full season. Street16 is saying to do this on the right side? I did both bushings on the left in mine. On tape it looks like I'm getting about 1/2" of forward movement under power which losened the car up nicely

STREET16
Dirt Maniac

Total posts: 158
posted October 30, 2005 11:01 AM  
Spi-nex, I hope you understand what wermm said about drilling into the rubber part of the bushing to soften it up. Wermm, I did drill my right side. I think we must have different driving styles - I set the car for the turns while braking, ang my guess is that you set the car for the tuns while on the gas. My home track goes dry-slick every night. If you go into the turns on the gas you're going to skate to the top. It does bring up an important point, different driving styles = different chassis set-ups.

Spi-nex
Dirt Roller

Total posts: 23
posted October 30, 2005 11:08 AM  
OK I got ya, just softening the bushing up so it doesnt hol the rear in place as well, I understand what your saying now.

Thanks for the information guys I really appreciate it!

bobaluuu
Dirt Freak

Total posts: 474
posted October 30, 2005 02:11 PM  
"Now I heard that turning the rear end would help with side-bite and turning into the turn, but on the big 5/8ths that would be a huge drag on the having it tweaked like that. (Im full throttle well over 10 seconds on the straightaways)" ---------------------------------------------------pardner theres some smoke in this woodpile 10 seconds full throttle in the straights?

Spi-nex
Dirt Roller

Total posts: 23
posted October 30, 2005 02:16 PM  
Yea, there is some smoke, but you are full throttle for a long time, more like 7.5 seconds on the straight, but it sure feels like 10 seconds while in the car.
--------------------------------------------

What do you guys recomend for Caster and Camber for a fairly high banked 5/8th mile track with tight turns?

Normal Sullivan
Dirt Full Roller

Total posts: 39
posted October 31, 2005 09:03 PM  
pardner theres some smoke in this woodpile 10 seconds full throttle in the straights? ----------------------------------------------

I had a car that slow once.

Spi-nex
Dirt Roller

Total posts: 23
posted November 01, 2005 09:29 AM  
Well excuse me for being so slow. Not only was this my first season I didn't really know what I was doing when I built the car and all I had in that car was a 305,,,so yea. Thats why Im here asking question trying to be faster!

[This message has been edited by Spi-nex (edited November 01, 2005).]

ratracer10
Dirt Maniac

Total posts: 141
posted November 01, 2005 11:33 AM  
Spi-nex, donít take it personal, I doubt that most of these guys on here have even seen a track with as much straightaway as you run on. That 5/8 mile paperclip track is almost like running two drag races (somewhere in between a 1/8 mile drag and a 1/4 mile drag) every lap.

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- When in doubt, hit the gas.

Spi-nex
Dirt Roller

Total posts: 23
posted November 01, 2005 02:18 PM  
I didn't take it personel, just kinda frustraing when most guys don't have a clue about the monsterous beast that is Hartford Speedway.

Hopefully I can be faster next year with the help these guys have been given me

Spi-nex
Dirt Roller

Total posts: 23
posted November 01, 2005 10:26 PM  
RatRacer10, please check your PM.

    

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