07 Mastersbilt Smackdown Help

[smithmod]

We need to pull out the old backup car and need some advice to help get us as close as possible right out of the gate. Car is an 07 Smackdown. I have the S7 spindles and the new updated 4 bar mounts to put on it but we never raced either before. Does anyone have any baseline set up thoughts for us on this car? With the updated front end, I want to make sure I have what I need under it. Any help would be appreciated. TIA

[MasterSbilt_Racer]

We need to pull out the old backup car and need some advice to help get us as close as possible right out of the gate. Car is an 07 Smackdown. I have the S7 spindles and the new updated 4 bar mounts to put on it but we never raced either before. Does anyone have any baseline set up thoughts for us on this car? With the updated front end, I want to make sure I have what I need under it. Any help would be appreciated. TIA

What is your primary car?

[smithmod]

'14 Pierce

[MasterSbilt_Racer]

Crossmember still in 07 location?

[smithmod]

We were told by the previous owner that the Right side frame rail was raised but I don't know about the cross member. Is there an easy way to tell?

[MasterSbilt_Racer]

If it isn't flat, its probably original, I would guess.

[MasterSbilt_Racer]

Set your ride height at 3.5" both fronts with s7 spindles. Set rear ride heights. Measure all pin to pin.
500# of spring. 275# rf spring
150# lr spring or stack of your choice. 250# rf spring

Lf 550# at ride height pin to pin
Rf 600# at ride height pin to pin.
Lr 700# at ride height pin to pin.
Rr 330# at ride height pin to pin.

Rf 1400# at ride height pin to pin minus 3"
Rf 2400# at ride height pin to pin minus 3.75"
Rf 2800# at ride height pin to pin minus 4"

[MasterSbilt_Racer]

500# lf spring above. And 250# rr spring

This all assumes a 2007 crossmember and may still bottom out.

[MachineMasters]

I'd go with what MasterSbilt_Racer said above.
My only change would be a stiffer RF spring where I'd do a 325 or a 350, but depends on driving style, track, etc. of course.

[MasterSbilt_Racer]

I'd go with what MasterSbilt_Racer said above.
My only change would be a stiffer RF spring where I'd do a 325 or a 350, but depends on driving style, track, etc. of course.

We ran a 300 a lot. Went as high as 350 sometimes. I think that's a fair suggestion. Really depends on bump situation.

[smithmod]

Thanks guys! We appreciate the help.

[smithmod]

Do I need to shim the rack and pinion up when we put the S7 spindles on? and what's the purpose for that? I have another MastersBilt driver that says they had to do this.

[MasterSbilt_Racer]

Do I need to shim the rack and pinion up when we put the S7 spindles on? and what's the purpose for that? I have another MastersBilt driver that says they had to do this.

I can't remember. That may be right. I'd just check bumpsteer once you are done. That would be the reason to do it.