427 vs. 428
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Elder User
Joined: Nov 2004
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From: So. California
I tested a 390 on my dyno and was impressed, this would be an ehtanol motor, 632 lbs of torque at 4000 rpm and 606 hp at 5500 rpm with 12:1 compression. ported and 2.19/1.73" valves, 600 4 barrel single plane max flow, large step race headers, max ramp rate, 220 duturation 108 lobe seperation angle, 109 lobe centerlines, .400" lift, that is good potential, I would be satisfied with 500 lbs of torque and 370 hp, I would run solid lifters with rollers if I could afford it. Make my own headers with a tubing bender, used intake and carb, I have a 600 adn 780 holley right now, I would spend my money on mostly valvetrain, pistions if needed, distributer, any wiay if I am out of line correct me.
Postmaster
Joined: Jul 2003
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From: iowa
Originally Posted by Huntersbo
I tested a 390 on my dyno and was impressed, this would be an ehtanol motor, 632 lbs of torque at 4000 rpm and 606 hp at 5500 rpm with 12:1 compression. ported and 2.19/1.73" valves, 600 4 barrel single plane max flow, large step race headers, max ramp rate, 220 duturation 108 lobe seperation angle, 109 lobe centerlines, .400" lift, that is good potential, I would be satisfied with 500 lbs of torque and 370 hp, I would run solid lifters with rollers if I could afford it. Make my own headers with a tubing bender, used intake and carb, I have a 600 adn 780 holley right now, I would spend my money on mostly valvetrain, pistions if needed, distributer, any wiay if I am out of line correct me.
torque =stroke or high flow at low lift points.
Post Fiend
Joined: Jan 2003
Posts: 8,600
Likes: 4
From: Iowa
Originally Posted by Huntersbo
I tested a 390 on my dyno and was impressed, this would be an ehtanol motor, 632 lbs of torque at 4000 rpm and 606 hp at 5500 rpm with 12:1 compression. ported and 2.19/1.73" valves, 600 4 barrel single plane max flow, large step race headers, max ramp rate, 220 duturation 108 lobe seperation angle, 109 lobe centerlines, .400" lift, that is good potential, I would be satisfied with 500 lbs of torque and 370 hp, I would run solid lifters with rollers if I could afford it. Make my own headers with a tubing bender, used intake and carb, I have a 600 adn 780 holley right now, I would spend my money on mostly valvetrain, pistions if needed, distributer, any wiay if I am out of line correct me.
Go ahead and build whatever you want. I wont impede...
FE "Freakin Expensive"
Joined: Dec 2003
Posts: 6,461
Likes: 4
From: Smith Mountain Lake, VA
??????????????? 2.190/1.730" Valves in a 390??? Hell I cant get those size Valve's in my 4.160" bore !!! and you got em in a 390...Impressive!! anyway 2.090" and 1.730" make more power with my combo..
Russ
Russ
Post Fiend
Joined: Mar 2004
Posts: 6,056
Likes: 8
From: Union, Washington
According to Ford those valves won't fit, as the notching breaks the cylnder wall into the water jacket. They won't work on a 428 bore either.
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Elder User
Joined: Nov 2004
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From: So. California
I would run it off alcohol, you were right, but I think some one thought I actually built that motor, I was thinking that I would run 9.5:1 compression because there arent many alcohol stations only one in california that I know of and if I wanted to leave town I would have to carry all of my fuel with me. I could just have an extra set of metering blocks jeted for 91 octane gasoline so I can just swap them in when I have to run gasoline. I would run alcohol primarly becasue it is much more affordible than gas if I make it.
Last edited by Huntersbo; Sep 24, 2005 at 01:30 PM. Reason: I made a typographical error
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