Just to close out this decade old plus thread, I roadtested the car for six months after finally getting it registered last year. Whilst a great open road cam, and fun on the highway past 4000 rpm, the Wade 140 wasn't that pleasant around town. It wanted to bunny hop in top at 60km, spit raw fuel into the exhaust and taking roundabouts in second was something needing to be planned in advance. That said, it ran better than it probably should have, but my grey motor is unlikely to see over 4500 rpm that often.
I spoke to Clive Stenlake at Clive Cams, whom recommended the Clive 82. Clive used to work at Wade and bought the Wade catalogue when that company wound up. Clive remarked that the 140 was "...a bloody good cam" but got to work at 3800 rpm, so long as you had good compression (around 10.5 to 11:1). The Clive 82 cam is much smaller than the Wade 140 (32/66 and 215 @ 50" versus 41/71 and 238 @ 50"), but still has a bit of overlap to assist the poor breathing of the old grey head, which also gives it a nice, lumpy exhaust note. The 82 gives registers about 10"Hg intake vacuum, so no brake booster without a vacuum tank. The 82 can be run in a stock grey, but responds best with head work, carbs and compression.
For my own interest, I wrote R and Python scripts to calculate cranking cylinder pressures, dynamic compression ratios and other things, using the piston motion equations. These showed why the Wade 140 wasn't a complete dog to drive, and underscored the importance of raising the static compression ratio as high as you can.
That said, if you are considering camshafts for a grey, I'd recommend speaking to Clive Stenlake first
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