Altered chassis question.

[blownelephant]

Hope this is the right place for this question, I've almost finished building an altered chassis, 120 inch mild steel to SFI 7.50, I used 3.2 mm seamless tube throughout and xxxx it's heavy! So I'm wondering as it's only tacked together from the motor plate forward should I change the tube to 2.4 mm wall thickness from the motor plate forward and loose a bit of weight from there? Thanks in advance.

[fuel749]

I'd look up the weight per foot (or your preferred unit of measure) and do the math to see how much you'll really save and make your decision from there.

[THE FRENCHTOWN FLYER]

I'm just curious as to if weight is a concern (and when isn't it?) why did you choose mild steel tubing vs thin wall 4130 chrome moly?

I built a roadster pickup for 10.90 racing and used .134 wall DOM, but that was because the minimum weight of the car had to be 2000# per the rules and I needed the weight.

[Rainmaker]

It's an age old situation.
But.......after you get through bolting all the weight on the front end,  you'll be asking your self why you ever worried about a couple of pounds.
That's just my 78 year old opinion .  You build it the way you want it..........
PS....we carry 52 lbs on the front of a 225 inch dragster with an injected sbc...?.....~JL~

[dreracecar]

Weight is of no real concern if the majority of racing you do is in brackets or index's