I had a 56 jeep with F head 4. , I would put a piece of chicken with a 1/2 cup of minute rice and a 1/2 of a peach in tin foil and use #9 wire to tie it to the manifold. Need to be about about and a half drive but it came out ever time.
Went good with boonesfarm wine

If you cann't stand my spelling use the ingore feature.