From what I remember, the application is for RV use. The blockage that is refered to in the intake is to lenghten the runner for torque. End result is idle to 4500 rpm or so. Edelbrock claimed a 20% increase in torque.
The .474 280MP cam pulls strong to 5200 with a performer, iron manifolds, and stock heads.
An upgrade to eddy rpm heads, rpm dual plane intake and tti headers, really wake up the combination to 6,000 plus rpm (5,000 to 6,000 rpm pulls like a small nitrous shot)..., my street 87 octane motor is 9:1 and makes about 390 hp at the rear wheels on a street tune with big fat torque over a broad range.
Too many cars, too many parts, too little coin, too little space to work in, too little time left to make it all happen!
Update: down to one ride, still too many parts, a little more jingle in the pocket, gaining space, and it's going to happen this year!
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