I used GMC 270 rods in my 278". The big end was narrowed to fit the crank & I had Ross build some custom pistons using the 'full floating' .990 wrist pin.

Check with Beck's they might have some left,

These are much stronger. The 'down side' is there heaver.

Hope this helps.

Good luck, John m., #3370

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John M., I.I. #3370

"There are no shortcuts to any place worth going". -Anon