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Original Message
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| RE: Torque number for 428 CJ |
| By P - 12/10/2001 10:04:40 AM; IP 66.89.75.42 |
I'm wonering about that torque number Royce, is it taken from the same spec sheet as the 335 HP??
Reason I wonder is this: My marine 427's get 439 footpounds of torque at 2900 RPM. I always thought a 428, with the longer stroke, would get more torque, especially producing the extra 60 or 75 horsepower on top of my marine 300's.
I agree with the HP ratings on the 428 CJ, virtually everything I have found indicates the engines were 20% to 30% underrated in power. It's a bit tough using published power ratings that far back, because the solid lifter 427 was rated at a max 425-HP for it's entire production run, even though there were many improvements in the design that would have allowed more power. True power for some of those variants is more likely in the 450 HP range.
I do trust the power readings provided by Ford to Chris craft, 300-HP and 439 footpounds at 2900 RPM, both being factors of the torque cam and 9.5:1 compression.
P |
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