I don't understand why would the idle circuit be any different ?
When I talked with Tim about the combination at Eddyville he didn't mention it.
The camshaft they used is almost identical to what I run in the Telstar , it seems to idle ok?
The 3.50 gear for the dump truck rear end had to be specially made , all the engine parts are run by other classes.
Several guys run a 413 ci. in Classic Nitro. Seven to one compression has been used since the '60s.