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vms
06-22-2011, 07:41 AM
Black front end rocket, Older car how much rack should it have.


what does rack do

MasterSbilt_Racer
06-22-2011, 07:56 AM
Rake adds roll resistance to the back of the car. Rake makes the rear get loaded more heavily for the same amount of chassis roll.

rubbinsracin
06-22-2011, 08:45 AM
on our car we have about 2" of rake

vms
06-22-2011, 10:14 AM
how are you meauring it.

MasterSbilt_Racer
06-22-2011, 10:39 AM
I assume you mean j bar rake?

poppy
06-22-2011, 10:42 AM
It is my understanding it will get you up on the bars quicker with more rake and help plant the RR for more side bite. Is that correct?

C10
06-22-2011, 12:52 PM
rake is set by ride height, depending what front cross member you have, I believe you have the square tube one, the ride heights are 3 5/8 lf 3 1/2 rf 6 1/8 rr 2 inch cars IIRC

zeke23z
06-22-2011, 01:08 PM
how are you meauring it.

Measure from center of both bolts to the ground.difference will be your rake

rubbinsracin
06-22-2011, 02:00 PM
VMS it depends on what you are referring too.

if you are talking about jbar rake, we run anywhere from 6-10". but that will depend on your chassis manufacturer's specs. but a good place to start is usually 6-7"

if you are talking about chassis rake, your ride heights should set that for you, or get you really close. our chassis actually has arrows welded into the frame rails where we are supposed to measure. normally it is the front and back of the right side frame rail to my understanding.

we set our ride heights then measure our rake. at ride height it is just barely shy of 2"

vms
06-23-2011, 01:55 PM
i am talking about j-bar. I measure from center bolt to center bold down. I got like 9, started at 12.

As for ride heights its kind of up in the air since the car is so old there ain't any documents saying with they should be. But I usally set it at 01 model. Yes it is a square tube chassis