Question for John Hinckly or Duke Williams

[Jeff C.]

I recently ran across a article co-authored by you concerning setting valve lash for SBC solid lifter cams.I have a 1962 340hp with the 097 cam and have been trying to find the best method to set the valves. You make reference to a method in the 1963 shop manual using TDC#1 & TDC#6. I have several shop manuals but no 1963. Can you tell me what it is?
Thanks
Jeff

[Jim D.]

Re: Question for John Hinckly or Duke Williams

Set the timing mark in the #1 TDC position and adjust:
exhaust valves on 1, 3, 4, and 8
intake valves on 1, 2, 5, and 7
Set the timing mark on #6 (one revolution) and adjust:
exhaust valves on 2, 5, 6, 7
intake valves on 3, 4, 6, 8

Jim

[Duke W.]

Re: Question for John Hinckly or Duke Williams

The Duntov lobes - from the beginning of the opening clearance ramp to the end of the closing clearance ramp measure about 400 crankshaft degrees, which leaves 720-400 = 320 degrees that each lobe is on the base circle. By contrast, the 30-30 lobe is about 540 degrees, which leaves only 180 degrees of base circle.

I've never actually checked the timing to see if the method in the '63 Shop Manual, as stated in the previous post, will really have the appropriate valves on the base circle.

For me it's just easier to use the method I outlined for the 30-30 and LT-1 cams for any cam, which will be on the base circle using that method.

So you have to bump the engine 90 degrees seven times instead of 360 degrees once. Big deal. I just leave it in fourth gear and push the car to the next indexing point.

Duke

[Verne Frantz]

In the garage??????????? *NM*

[Richard M.]

Re: In the garage???????????

...that's ok if you're pointing "out", right? On a sunny day of course.:-)

[Jeff C.]

Thanks everyone! *NM*