Lower rr trailing arm metric

[goneracinn80]

I am under the understanding that the lower right rear trailing arm on a gm metric frame effects corner entry. With that being said my question is does any have info on what happens if you move it up and vise versa? I am to loose on corner entry on a dry slick track. Thanks

[slingindirtupstairs]

Too much LR or cross weight (cant remember) can cause that too I think.:confused:

[goneracinn80]

Yes got about 135lbs of lead behind fuel cell. Stock car driver: watched your abilene race on you tube looked very good on dry slick. Look like you had alot of hp.

[goneracinn80]

Do you have lead behind the axle?

I never move my trailing arms from hole to hole.

how much angle in your trailing arms

[turner]

I dont know about his power, but if you watch his videos, he corners better and comes out of the corner a lot better, That looks like where he is making up his time to me. Listen to what he has to say, because he definantly knows what he is doing.

[goneracinn80]

I wouldnt run with ANY lead behind the rear axle.

STock Car driver,
i have digital scales what should the scale weights be on the screen ie: lf, rf, lr, rr weight. I can get my percentages from there if you can help me with that. My car weights 2850 full fuel no driver.Thanks

[goneracinn80]

I always scale with no driver and fuel like after the feature so down 5-7 gallons.

I scale for 200 bite which is the left rear heavier than the rr by 200.

left 51-52 rear the same as left

cross is irrelevant

no weight behind or outside the springs

level your front a arms and put your left rear frame height half inch or so higher than the lf

then adjust your wt jacks to get to 200 bite and keep the car fairly level... if it has to go any way out of level raise the rf a little or lr.. i never run the lf lower than level on the lower a arm.

Thanks Stock Car Driver Ill give it a shot. Another question, do you run a tie down shock on the left rear or one that will hold it up as you go through the corner? Should my weight be mounted high or low inside the springs? Also how much does one of your cars weight because i have 52% rear weight now but the weight is behind the fuel cell? If I move all that weight over the rearend I will have to add more lead to get back to the same rear percentage, correct? Im already quite a bit over weight.Thanks for your time.

[Crash 4]

Stock car driver, is LR shock bent? Or maybe just optical illusion.

[goneracinn80]

Stock car Driver
What kind of angle in lower trailing arms on rearend? Also what shock do you run on left rear tie down or hold up? Seems from your explaination of weight placement you run a hold up shock to keep the weight transfered to the right front correct?

[Doug_Guilds]

I have a question about trailing arm angle. If the lower bars have less angle in them (flattening them out a bit) does it bring the roll center down, and doesn't bring rear roll center down help side bite? (helping a loose off condition)

Now a bit off topic, but not really since there is a pic up there. :) Is that a late 80's to early 90's Grand Prix body on your Bomber, Stock Car Driver?

[Ricky76]

5050 6060
3030 3030

most of the time

split valves are for smooth tracks to fine tune, they arent NEEDED until your car is pretty darn good already

What brand shocks do you run and what about the angle of the rear lower trailing arms ?

[Ricky76]

Thanks for the information. I have always been told to run as much angle as possible on the lower rear trailing arms because it helps with forward bite. Is that not correct ?

[ToddSmith16]

it does but takes away from other things. Lowering the lower RR trailing arm increases side bite. The key is finding the most effective trailing arm angles to support your specific set-up and driving style! I usually set mine, RR arm level to just a slight angle depending on side bite feel with the LR arm being 6-12 inches more than the RR arm depending on the track conditions.

[outlaw087]

I agree with stock car driver. I think that top arms is angles down when on the gas it pulls up on the frame and takes bite out and the arms up it pulls down on the frame and keeps bite in. is this right stock car driver I have a metric too and need all the help i can get.

[outlaw087]

if u r on the gas when rear end rotates the bars ( angles down ) pulls up on frame taking weight off the rear end. if the bars ( angles up ) pulling down on the frame it keeps wight / bite in. does this help

[a1driver]

if you have the lr arm level and the rr arm up hill its definitely going to drive off the corner sideways! LOL

[newguy]

i have my upper arms level right now but the moumts on the housing are as low as they can possibly be. this is still leaving me with 10° on the lowers. is this acceptable? shouls i massage the lowers some more?

[Ricky76]

if u r on the gas when rear end rotates the bars ( angles down ) pulls up on frame taking weight off the rear end. if the bars ( angles up ) pulling down on the frame it keeps wight / bite in. does this help

Are you talking about the lower rear tariling arms ? Do you want to keep them straight instead of having any angle in them ?

[outlaw087]

Are you talking about the lower rear tariling arms ? Do you want to keep them straight instead of having any angle in them ?

I was talking about the top arms. I have my lowers level. all of my mounts is adjustable and on tubs and rod ends. all of the mounts is in the stock location.

[Ricky76]

No I dont agree.

The closer to level all 4 arms are the lower the rear roll center which promotes side bite and the more consistant your pinion angle, rear steer etc will be in and thru the complete corner.

My old chevelle had all 4 level which many claim on here will bind etc. that car had more fwd drive than my metric by a long ways, it lacked in side bite but it was 6 inches wider track also which I attribute the lack of side bite to.


The reason guys think more angle adds traction is they FEEL the tire drive up under them and lift on the car, so they FEEL they have more traction, what they have is more traction while its on its way up but once its under there you LOSE drive and traction and have to feather the throttle to get the rest of the way off the corner.

A car with the lf arm down and rr up drives off the corner sideways, when your behind those guys you can see their door numbers on the drivers side and their whole lf tire... thats never the fast way around a track.

So you're saying run all rear trailing arms straight ? Right now my top ones are straight, but my lower ones are at a big angle. The lower ones that have the mount on the bottom of the rear end housing are 4 inches from the bottom of the rear end housing. Should I change them and run them straight ?

[Driver88]

I run my lowers as close to the housing as possible ALWAYS...

You must have a really high ride height as I cant get my uppers to 0 degrees.


Are you saying from car to rear end your uppers run uphill?

[newguy]

ok so i reset my ride height and massaged on my lower mounts and now have them level. this gives me about 5° in my uppers. is this a good starting point? i can legally relocate the mounts on the chassis, should i raise them?

[Ricky76]

I run my lowers as close to the housing as possible ALWAYS...

You must have a really high ride height as I cant get my uppers to 0 degrees.

Thanks for the information. My rr ride height is 9 1/2 and my lr is 9.

[newguy]

right now the car is on a jig and the rear end is sitting in saddles and cant move. i have some 4 hole brackets i was thinking of using. thanx for all of the advice.

[fast_crew]

Alot of cars up our way have started running ride heights 10+ inches promotes more roll and side bite.

[Ricky76]

Yeah when I raised mine up to where I have it now, it rolls over too much.

[Ricky76]

I'd like to try that, but our track is a very small and very tight 1/4 mile that gets really dry slick. I'm thinking if I only run 51-52% rear, it won't have any forward bite. You have to slow down so much in the turns because the corners are so tight.

[gun91]

I'd like to try that, but our track is a very small and very tight 1/4 mile that gets really dry slick. I'm thinking if I only run 51-52% rear, it won't have any forward bite. You have to slow down so much in the turns because the corners are so tight.


I run a mustang hobby (unlimited motor rules with stock suspension) and never go above bout 52.5 rear. The rear suspension on the mustang is pretty much same as a metric

[racingford]

stock car driver you said you run no lead out side or behind rear springs but your pictures shows lead outside of left rear weight jack and you run 200 lb of bite because your left lower is level .if you would put some angle it it you could back that bite off. angle in left lower will permote drive at left rear and yes angle in right will lossen it some into the corner only wile off the gas

[Ricky76]

stock car driver you said you run no lead out side or behind rear springs but your pictures shows lead outside of left rear weight jack and you run 200 lb of bite because your left lower is level .if you would put some angle it it you could back that bite off. angle in left lower will permote drive at left rear and yes angle in right will lossen it some into the corner only wile off the gas
Will angle in the right give you more off the turns or should it be level for more out of the turns ? I see what you're saying about it being loose getting in while off the gas. I have both my lowers at an angle and my car is very loose entering the corner while I'm off the gas and I only run about 80# of bite in the left rear.

[turner]

Hey Ricky. There are alot of guys on here that do things there way and it works well. I can tell you from experience that if you listen to Stock car driver , you will be fast.I know every driver is different , etc, but if you can drive at all, you will be fast if you listen to him and do what he tells you to do. Good luck with whatever you try.

[racingford]

You want some static angle in right so when the body rolls it will be level with that being said you do not want it to go past level,angled down to the front during body roll

[racingford]

I understand the theory in the matter and any link with angle down to the front wont have the drive a link with level or upward angle. give it a try u might like it.

[racingford]

has anyone mentioned that if you could of seen the race you wouldnt have totaled that car out, rared up like that its no wonder,you cant see. four tires is allways faster than three. eight tires is even faster.

[Ricky76]

Hey Ricky. There are alot of guys on here that do things there way and it works well. I can tell you from experience that if you listen to Stock car driver , you will be fast.I know every driver is different , etc, but if you can drive at all, you will be fast if you listen to him and do what he tells you to do. Good luck with whatever you try.

Thanks for the information. Our season is over, but wanting to get ideas for next year. I'm usually fast and have won the track championship at my track and this year the worst I finished was 4th once and 5th once. The rest were top 3's, but I'm always wanting to get faster. We run open motors, except no roller cams, no aluminum heads or blocks, and no 400 blocks. Our engines put out about 550-600 hp, but we have to run Hoosier (Nascar) pull offs so it's hard to get them hooked up. Again, thanks for all the help and information.

[slim10]

bars angled down in front promote tight rear steer ,I likethe way you made your ballast old valve covers come in handy

[Ricky76]

I run my lowers as close to the housing as possible ALWAYS...

You must have a really high ride height as I cant get my uppers to 0 degrees.

My rear ride heights are 9" on rr and 8.5" on lr.

[wildcat22]

how are guys get ride heights that low?? i run 5x11 springs rear 250lr 200rr

[Ricky76]

I have adjustable buckets in the rear and run 15 inch rear springs.