Just speculating. I am down with a back injury and too much time on my hands! If there is a crank core out there that could be ground on a bigger stroke for a somewhat reasonable price, it might be an interesting project. My 408 is a great motor, but even with the airgap dual plane and 235/249/107 duration cam make for the need of a looser converter than i like. The converter i have is a ten inch. A&A said it would be tight, but i would like a tighter converter yet and the only way to get that is all the cubes i can stuff in a stock block. The 408 would make a great ten second backup motor for my race car if I ever need it. Almost zero maintanace and no fire suit needed! GregIs some "custom" crank in your future?
Exactly, the same reason I am planning on the 3.78 inch Molnar crank if I am fortunate enough to do something with my ‘75 360. Targeting a .040 over, 387 inch build with some “decent” cylinder heads because I do want to wind it pretty hard but I don’t want to drive over top of the crank and rods in the process.IMO - waste of effort. Too expensive for a stock block if you're making the power I think you could make with a serious effort.
This would be a torque build. My first ever stroker was a 535 rb motor with 906 heads. It had so much torque it shredded a stock Hemi converter in three passes. I miss that. The EQ heads i have flow the same as those old 906 bb heads! So rpm would be less than about 5800 maybe, and probably 530 hp. But i should see some very serious low speed torque which is everything to me in a street car. I would run the same cam,intake,heads. Think TRACTORDART .probably look for about a 3.08 rear gear too!IMO - waste of effort. Too expensive for a stock block if you're making the power I think you could make with a serious effort.
What head? We use 4.250 stroke for our "TQ hungry" customers...lol!Title says it, how much stroke can you stuff into a magnum 5.9 block using the small rods? Kinda curious about A BIG street motor
If I'm understanding you correctly your looking at how the converter acts totally opposite of what it is. Big cubes = big torque. Big torque = more stall speed from the same converter which makes it feel looserJust speculating. I am down with a back injury and too much time on my hands! If there is a crank core out there that could be ground on a bigger stroke for a somewhat reasonable price, it might be an interesting project. My 408 is a great motor, but even with the airgap dual plane and 235/249/107 duration cam make for the need of a looser converter than i like. The converter i have is a ten inch. A&A said it would be tight, but i would like a tighter converter yet and the only way to get that is all the cubes i can stuff in a stock block. The 408 would make a great ten second backup motor for my race car if I ever need it. Almost zero maintanace and no fire suit needed! Greg
I would like to tighten the converter and run a taller rear gear to drop rpm and increase the throttle response. I just don't care for a "loose" feeling setup in a street driver. As far as how much stroke i want, it would be what ever i can put together for a modest price, like under a grand for the crank. I see there are already 4.25 cranks, just curious how far this can be taken and in a price range not a lot above an off the shelf stroker kit.If I'm understanding you correctly your looking at how the converter acts totally opposite of what it is. Big cubes = big torque. Big torque = more stall speed from the same converter which makes it feel looser