Dear Rob,
I have an engine with a Parker Funnelweb 4V intake. It does require use of port-stuffers in the intake ports for optimal function. I have about 4-5000 miles on it including last year’s road trip to the POCA Rally in Phoenix. It runs well and is visually striking. Using a CR of 9.2:1; a custom cam chosen with Dan Jones, ported and port-matched iron 4V quench heads and a custom-built carb the dyno test showed 488 hp at about 6000 and 476 at 6800 rpm. At the lower end, 3000 rpm showed 200 hp and 376 ft-lbs or torque. The block is not stroked and is thirty-over. The other Pantera uses a similar engine with a CR or 9.75:1 and a Holley Strip Dominator intake. Both have been driven on winter days with temps in the thirties without issues other than a longer warm-up.
Yes, use of the Funnelweb precludes the stock engine cover especially with use of a carb spacer. Also, a disadvantage is limited rear vision.
I am re-building an Aussie-headed engine and have a Parker Funnelweb 2V. It is, I think, about an inch lower than the 4V and does not require port-stuffers. Based on the dyno results of a friend’s similar engine using a Weiand intake, I am expecting 450 hp or so on the dyno.
Beware of Parker Funnelweb Chinese knock-offs. The reported machine work required to make their fitment and function is expensive and makes the low purchase price sour quickly……and they probably don’t function as well as the real thing.
Warmest regards, Chuck Engles