Frame upgrade

[MWA]

What can I do to make my frame on my 83 cutlass stronger? I want to frame to handle engine power? What is the best way. 1972 olds 350 bored 0.60

 

[ssbrewskyaz]

There's a couple of G-Body jumper frames for sale on Craigslist here in the Phoenix area. I would say a fully boxed jumper frame will handle all the horsepower a guy could throw at it. ...

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[pontiacgp]

and redo the factory welds. When you box it tack weld a few bars across the c channels cause they will bow when you weld in the plates