L100 cam with original lifters?

[richard rink]

The rebuild of my 8ba will likely include the L100 cam. I am hoping to use the original lifters. However, I expect that the L100 regrind will have reduced the dimension of the base circle. I figure this will increase the clearance between the lifters and the original valves.(?)

So, if my thinking is correct, it may be advantageous to get a set of Chevy valves; perhaps their 0.100" great length may allow for a satisfactory arrangement (butt grinding.) Or, switch to adjustable lifters and retain the original valves.

Anybody have experience with this? Thanks. Richard

[flatheadmurre]

If your valvetrain is good you can always add lashcaps to get some added lenght of the valves.

[Shoebox]

.............. just my humble opinion, but I would treat that new L100 bump stick to a new set of quality adjustable lifters. Others may differ, just my .02 cents.

[KiWinUS]

New lifters always with new cam is my rule.

[JSeery]

You could use the old lifters, but they should be reconditioned as a minimum.

[Binx]

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Before you commit to an L100, take heed of what our own Pete says about the Isky 1007b from another forum:

"The 1007B has something none of those other cams have.
A higher rate of lift.
This equals more mid range power where you need it with a street engine."

Lonnie

[Ol' Ron]

There is one thing you have to understand about an L-100 cam. It is a dual pattern cam, intake 246 @.050 and ex 235 @ .o5o" and 360 net lift. When I first saw this I doubted it could be driven on the street in a heavy vehicle. However, the engine was installed in a 5500 lb ambulance. That was sometime in the late 80's and I became a believer ever since. The Isky 1007B is a very good cam, unfortunately, theonly way to prove one way or another which cam was the best would be very difficult. I've run them both.

[Ol' Ron]

I also use chevy valves with the L-100, as they're .060" longer and keep the adj lifter, less likely to loosen.