5.4 Stroker kits
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Joined: Apr 2009
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From: Copiah County
Late answer, but ....
See Jon Kaase Explains Header Design on Engine Masters Winner - EngineLabs
Jon Kaase started with a modular 5.4; he poked and stroked it to 3.72 bore (94.488mm) x 4.70 stroke (119.380mm), for 6.7 liters (roughly 6,696.76cc) or thereabout 408.6614 cubic inches.
That's naturally aspirated, on "spec" pump gasoline. Maybe if you want a big 5.4, you should consider giving Kaase a call.
Jon Kaase started with a modular 5.4; he poked and stroked it to 3.72 bore (94.488mm) x 4.70 stroke (119.380mm), for 6.7 liters (roughly 6,696.76cc) or thereabout 408.6614 cubic inches.
In the first round of competition, Kaase’s engine hit 720 horsepower and 666 lb-ft torque. In the final round, peak numbers were 721 horsepower with 675 lb-ft. But again, the focus was on broad torque numbers.
“Those headers really did help us score down low and we really didn’t give up anything up high,” says Kaase. “At one point it made 630 lb-ft at 3,200 rpm. That’s a lot of torque at 3,200 for a 409-cubic-inch engine.”
“Those headers really did help us score down low and we really didn’t give up anything up high,” says Kaase. “At one point it made 630 lb-ft at 3,200 rpm. That’s a lot of torque at 3,200 for a 409-cubic-inch engine.”
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