Door Bars Added To The Nova Chassis! Adding Tubes to the Chromoly 25.3 Chassis, Bending, TIG Welding

68-72 1968 1969 1970 Chevy Chevrolet Nova Twin Turbo LS Swap Powerglide 25.3 25.5 Chassis Radial No Prep Drag Race Racing Roll Cage Bar Bend Build Fabricate ‪@JDSquaredInc‬ JD2 Series 32 4130 Chromoly ‪@MillerWelders‬
In this one, I add the main door bars to the roll cage portion of the Nova's 25.3 Chassis.
Music Featured in this video is by Craig M. Keefer, check him out on KZbin!
-This video features his brand new song; "Western"!
Thanks for watching, liking and Subscribing, I appreciate it very much!

[@landonnorton3921]

Ive been looking for videos for a 25.3 chassi build and so far these are the best ones. Im looking at building my first sfi cage. Im not welding lol i have a tig welder buddy and hes going to get cert. But great videos

[@keefershotrodshop]

Thanks! Good luck with your project!

[@chryracer9918]

I'm glad that you have given out the cord dimension to check angles. Not alot of people use that in the chassis world

[@keefershotrodshop]

Thanks, I like to check everything in every way I can just to try to avoid silly mistakes, thanks for checking out the video!

[@vehdynam]

Nice work and good information! Great music also. I am a new subscriber , and this cage information is right on. Many thanks.

[@keefershotrodshop]

Thank you! Glad you enjoy it! Thanks for subscribing and I'm glad you like the music! Thank you for watching!

[@scottbelen]

Couple questions, does the bend in the door bar affect certification at all ? And why are the center frame rails short in the front. Amazing work sir.

[@keefershotrodshop]

Now I want to triple check my SFI book, but I don't think it says anything about the door bars not being allowed to be bent. I will check on that to make 100% sure, though. The center 2a frame rails are short, because this is a stock front suspension car (with a factory style subframe instead of a strut front end) and those bars will only go far enough forward to tie into the front subframe. Thanks for watching and chiming in!

[@keefershotrodshop]

Just to clarify, I looked in my 25.3 SFI Chassis Book, and it does not mention anything about the main door bars not being allowed to be bent, and there is a general rule that any bar can be bent or angled unless otherwise specified.

[@vehdynam]

A question if you don't mind. At 47:.20 you mentioned adding diagonals to the main hoop ( d bars in nhra rulebook) as being necessary for an 8:50 cert. I have a 37 Chev gasser I am doing an 8:50 cage in. Are those bars necessary , as I thought only required if unibody.? My main hoop is welded to the frame. If required can I mount them to the flood with plates ? Many thanks.

[@keefershotrodshop]

Correct, the D bars are only "mandatory when main hoop is welded to plates on floor and/or rocker/sill in lieu of frame" quoted from the NHRA rule book. The reason I mentioned that is because Novas are not full frame vehicles, they only have a front subframe that ends under the front seat area, so a Nova would typically require D bars. Your 37 Chevy has a full frame, and like you said, the main hoop is welded to the frame, so D bars are not required in your car. Thanks for watching and commenting!

[@jimmiejohnson1404]

Hey man love your stuff. I have a 74 nova an I will pay you to build a tube chassis and roll cage for me. Please reach out