BTW LJ, with respect to the Daytona Prototype Engines (DPE) they had a conservative advertised power output of 520 FWHP. There appears to have been three versions of the engine, possibly more.
One version of the engine was the 'for public consumption story version' which was the 520 HP rated version. This is the engine virtually everyone thinks about when DPE discussions come up.
There was another version of the engine that was just called the sprint engine or sprint motor. It was the equivalent of what we might think of as a qualifying engine that was intended to be run for qualifying position at races and then be replaced with a race version. That I am aware of that engine never had a published power level but was estimated by some to approach the 600 HP level.
Finally there was the race version of the engine. The power output for this version was never publicized either but was obviously somewhere between the 520 and ~600HP versions of the engine. Whatever the actual power level was, it delivered a stunning victory at Daytona that year. It was reminiscent of LeMans when the GT40's came across the finish line in their now famous 1,2,3 formation.
Here is a link to the Roush-Yates website where they still have a page for the DP engine, click here =>
DP Engine. As you might suspect by now, this thing is no shrinking violet. It does not produce the torque of a blown engine but it gives no quarter to any n/a competitors and in real terms far surpasses the power output of any Coyote engine to date, plus it is reliable.
In the FWIW category the Coyote engine is a great showroom alternative to provide impressive street power. At the races the TiVCT does not produce as great a benefit as it does on the street. Ford knew this and pressured the racing bodies in this country to produce either Coyote based racing classes /events or disallow the big bore 5.0L Modular Motor based cars from competing. Ford wanted a Coyote P/R story without the need to explain about those troubling big bore 5.0L ModMotor vehicles that for all the world looked like they performed the same or better.
To accelerate the transition to the Coyote platform FRPP has essentially removed any of the earlier Modular Motor performance parts from their catalog. When you consider they still offer performance parts for 50 year old FE engines, the obvious question is why? The answer is equally obvious.
BTW , because the story is not complimentary, there is little discussion of the fact the Coyote block is on its third or fourth (possibly more) revision for reliability reasons. Definitely something to consider if you are building a maximum effort version of one of these engines.
Ed
p.s. I don't know what you are using for cams but if you are still searching I know where there were some original Roush-Yates DPE cams. If you are interested I can PM the email address and contact info to you.
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