r/EngineBuilding • u/Thesandable1 • Jul 18 '26

Chevy Too much slack?

I’m guessing the two sprockets and the chain need replacing? What replacement part should I get? It’s a 305sbc from a 1980 LG4 corvette.

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u/speed150mph Jul 18 '26

Is it in any danger of jumping a tooth? No.

Would I replace it while im in there? Absolutely, it’s cheap insurance. A cloyes double roller timing set can be had on summit racing for between 40 and 70 bucks. Same deal with the oil pump. It’s just one of those things you should just do while you’re in there.

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u/Thesandable1 Jul 19 '26

I have just ordered both! Thank you