Tiiming Chain Replacement

[kchampagne]

Excellent! Thanks everyone for the great advice! I am getting ready to ramp up my suburban project so I will post some updates on my build page.

[Clarke]

Curious, I pulled my '62 305D out several years ago to replace all the seals and gaskets and repaint it. I remember checking the chain slack and like TJ I was surprised by the amount of slack, but it was still within toleance with 50K original miles.

However, I dont recall mine having a double chain/gears. Maybe it does and I forgot? If it doesn't do you have to change the cam, or do you simply add a second gear?

[bigblockv6]

There is no need to change the cam, you just have to get the full double roller timing chain and sprocket set.

[Clarke]

Originally Posted by bigblockv6

There is no need to change the cam, you just have to get the full double roller timing chain and sprocket set.

Sounds easy enough... Unless I'm mistaken, I'm under the impression that excessive slack in the timing chain is one of the top gambles in a high mileage BBV6? Or worded differently, one of the first areas requiring attention on a high mileage BBV6?

What's the advantage of having double roller set up compared to single? Less wear/stretch in the chain over time?

[1972RedNeck]

Originally Posted by Clarke

What's the advantage of having double roller set up compared to single? Less wear/stretch in the chain over time?

A double roller chain is 1.7 times stronger than the same size single strand chain...