Worn Timing Chain

krazykuda said

The stock slants and 318's had cheap timing chain and gears that wear fast.

I don't run anything less than equivalent to a stock 340 double roller or better. Usually better.

I once replaced the timing chain and lifters on my 68 Cuda with 84 k miles and gained a little over 2 mpg from the efficiency improvement, not to mention it ran much better.

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I hope to see a mileage improvement in this case; seems possible since the throttle openings are now smaller. How much is TBD....

My main point of posting this was for the newer car guys lurking here to be aware of something that seems mundane but is really pretty important in engine operation. Regardelss of how you fix it, it is something that is pretty easy to rectify on these cars.