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Reply to "Newbie with many questions"

Todd, I think 4 bolts are over kill but it's your project so do what you feel comfortable doing. This whole discussion got me thinking about fasteners and I had to look up how strong a grade 8 bolt is. They are strong as hell ! They (the steel) have a tinsel strength of 150,000 lbs, a proof of 120,000lbs and a yield strength of 130.000lbs. The 1" tube you are welding to is probably mild steel which has a tinsel strength of around 78,000lbs.  Common welding rod, like 6013 to 7018 is between 60 and 70,000lbs tinsel strength.

It looks like the weak link is the 1" tube.  In terms of mass strength, the weak link is still the 1" tube.  Any engineer out here can pick my numbers apart by going into nitpick mode but basically mine are in the right place.

Todd, I really like what your doing with your modification. Thinking ahead should always include later removal/access.  Eliminating wheel hop and transaxle shaking is a paramount consideration on these cars. David stroud and I both had a rear "traction bar" mounted at the rear of the engine. His engine was a Suby  and mine was a  VW 2.1 ltr................Bruce

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