DeTomaso Mailing List: February 99, Message #184

Steve wrote:
> Carb ports: two types, full vacume all the time (intake manifold) and
> "ported" vacume. This is the connection, on Holleys, on the metering block.
> No vacume at idle but when the throttle blades open, vacume is "ported" to
> this connection.  Fords typically use ported. 57 Chebys use full.

Hmm. In this case, my setup is getting vacuum at idle. I wonder if the total
timing has been backed off to keep the engine from overheating at
idle back when it had one bad fan motor and the other fan blade on backwards.

Thanks for the info.

-tom
'73 euro GTS #6382