05-12-2005, 12:29 PM
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CC Member
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Join Date: Feb 2004
Location: Outside Miami,
FL
Cobra Make, Engine: Several
Posts: 949
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Not Ranked
We switched to 1.7's on a stock FORD 385hp 351W Crate and it seriously brightened up the engine. No dyno #'s, but i would guess 15-20hp. A few thousand miles or so and they are just fine. Same springs, no stacking. i've got nice 2 into 2 headers, so that helps also.
Not sure about the cam/spring/piston clearance on a newer 392 FORD stroker 351.
To be cautious, i index the plug tang to the top (or between the valves) position and limit it to 35thou, even though the MSD will fire 40 (or 50) with ease. i shift hard at 6500-6600, quite regularly. Nice motor.
Nice mod, but with a bigger cam lift, who knows? Better measure, if not stock. Same with revised springs. The 750 Holley HP certainly likes to feed the deeper opening valves.
Got the trick from a 'Stang Drager.
Works fine for me.
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Last edited by What'saCobra?; 05-12-2005 at 12:32 PM..
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