340/418 Stroker questions
I would run 9.7-10.0 comp run a hydraulic roller with 230-238 dur @.050 and I would run a dual plan intake for more TQ with a single plain you lose a lot of TQ at low rpm. with a hyd roller you have very low maint. and a very easy break in on the cam.
I'm running that exact cam in my stroker: Crane hydraulic roller, 230/
[email protected]", .528"/.548" lift, 112-degree lobe separation. It makes good power (440rwhp last dyno) and is very streetable, with just enough "lope" to let you know it's there.
However, I run 11.4 comp with alloy heads and 100 octane fuel (equivalent 95 in the US). Mine's a bit high, but it's within the cam manufacturer's recommendation of 10-11.5 comp. 10.5 would be perfect for alloy heads and pump gas, IMO.
Also, in my opinion you're better off running a single plane manifold in a stroker (I run an M1), as they have big cubes and short rod ratios, and already make good torque and power at low revs. The single plane lets the engine breath up top (strokers need a lot of air), and the M1 provides better low and mid-range torque than other single planes. It just pulls straight off the line.
What you have to remember with strokers is that the extra cubes soak up big cams, big heads and single plane manifolds, so traditional "conservative" thinking has to be put aside when planning your intake.
Here's the cam:
http://www.cranecams.com/product/cart.php?m=product_detail&p=24313