Help with Chim/Griff racer spring rates please.

[chevtrev]

We have a very competitive LS1 powered car here,however the speced spring rates from the Malaysian challenge car seems way too low and we are pitching like the Titanic.
Shocks are Penski 3 way with Eibach springs,200,60,120 fr,200,60,110 rear(with 70mm keeper springs,rear),with 1" front arb and drop links compliments of mr Heath.
Seems to be a metric reading and equates to 265lbt fr,242,rear,which seems way to low,although they are 13mm od fr,12.75 rear,which is alot thicker than standard.
We are having them dyno'd tommorrow,however it would be nice to know what some of the racers ,or developed track tools guys are running with, to maybe narrow the science.

Ps Andy,(Guillotine)If you have Steve G's number it would be great.

[the gazman]

chevtrev said:

We have a very competitive LS1 powered car here,however the speced spring rates from the Malaysian challenge car seems way too low and we are pitching like the Titanic. Shocks are Penski 3 way with Eibach springs,200,60,120 fr,200,60,110 rear(with 70mm keeper springs,rear),with 1" front arb and drop links compliments of mr Heath. Seems to be a metric reading and equates to 265lbt fr,242,rear,which seems way to low,although they are 13mm od fr,12.75 rear,which is alot thicker than standard. We are having them dyno'd tommorrow,however it would be nice to know what some of the racers ,or developed track tools guys are running with, to maybe narrow the science. Ps Andy,(Guillotine)If you have Steve G's number it would be great.

Steve G 01327 878425, or try Steve Howard on 01494 761555, he has used Penski a lot on the old Tuscan cars.
BTW, Steve G is going to run 475fr 375rear as a starter on the Chim he is setting up for Chassis 33

[chevtrev]

Cheers Derek