My friend has a 40mm Lectron (single), with that excavator(?) snomo manifold. Stock ported reed cages. Stock milled head. "dune" ported 65,5/54, and T5's. 155psi, 93 pump gas at 350-500ft asl.
He has 2-6 metring rod. It was close but not prfect. He still needs to open power-jet littlebit.
Sorry! This is a little off topic, but I have always wondered, how much it will affect to a power, when ususally these pod-filters sucks pre-heated air in?
I mean, there is hot stinger tubes right next to them. Chambers and hot cylinders + a radiator, all in front or aside.
Out of frame drag pipes, small "drag" radiator (lower position) and running alky (cooler motor) helps those filters to get a little colder air.
Sorry my english.
I have been thinking of building somekind of "plenum" in front of carbs and move my K&N filters out of frame. Just for fun.
I´m pretty sure your bore is now 65mm. Stock bore is 64mm.
4mm stroker crank is cheaper than a 10mm stroker crank. 4mm crank is a "drop in" and anything more than that needs a case trenching.
Is your plan to go as big as you can, using your stock cylinders, or are you going to buy aftermarket cylinders?
I can´t say much, but 4 mm stroker crank is a "drop in". Anything more needs case work. I think the price for 7 and 10mm is the same, so I would go 10 before 7.
It´s a casted monoblock cylinders, made by CPIndustries Inc.
Nicasil plated.
Bore: 64,65,66,68mm
Stroke: 54,58,61,64,68
cc: about 347 to about 494
"They" say, it makes good power box stock.