Well since motor is almost together, what do you think it will put down? *Reward*
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Joined: Nov 2001
Posts: 2,985
From: In a house by the bay
A point of comp won't make a likety of difference either way. The engine won't rev to 7k and it aint gonna make over 500 hp at the crank. Then again, I may be wrong.
edit:
No, I'll go to the optimistic side of this in saying that you may see 425/435..... that's my guess. Hard to judge heads... and I have alot of faith in Lloyd, just haven't seen any numbers from his stuff as of yet. Should be interesting.
-Mindgame
edit:
No, I'll go to the optimistic side of this in saying that you may see 425/435..... that's my guess. Hard to judge heads... and I have alot of faith in Lloyd, just haven't seen any numbers from his stuff as of yet. Should be interesting.
-Mindgame
Last edited by Mindgame; Jul 5, 2003 at 12:45 PM.
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Joined: Feb 2003
Posts: 641
From: St. Charles, Il
To get much more than 400 RWHP fom a N/A LT-1 You need some fancy stuff.
From what I can see here is what he could have done to get higher horsepower NA.
Use 6 inch rods insted of 5.7, that changes the rod angle and decreses bore wall friction but also decreses rod / crankshaft leverage. good for a few HP but it will cost you a bit of torque.
Also using a cam with equal duration inake and exhaust valve openings will get you more HP at the cost of torque. Going with a solid roller so you can crank the Rs way up is the other way to do it. Unless you get really exotic looking for 500 or more is rediculous.
With that much exhaust dur, and that little valve overlap Im guessing it opens around 52-55 degrees BBDC A cam like that greatly reduces pumping losses but at high RPMs you lose some of the followthrough on the push on the piston, Whatever it makes, I say It'll have a good 50 more torque than HP.
From what I can see here is what he could have done to get higher horsepower NA.
Use 6 inch rods insted of 5.7, that changes the rod angle and decreses bore wall friction but also decreses rod / crankshaft leverage. good for a few HP but it will cost you a bit of torque.
Also using a cam with equal duration inake and exhaust valve openings will get you more HP at the cost of torque. Going with a solid roller so you can crank the Rs way up is the other way to do it. Unless you get really exotic looking for 500 or more is rediculous.
With that much exhaust dur, and that little valve overlap Im guessing it opens around 52-55 degrees BBDC A cam like that greatly reduces pumping losses but at high RPMs you lose some of the followthrough on the push on the piston, Whatever it makes, I say It'll have a good 50 more torque than HP.
Last edited by Dave Feerst; Jul 5, 2003 at 12:55 PM.
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Joined: Apr 2001
Posts: 713
From: Glenview,Illinois,USA
I had a friend with 12:5:1 revving to 7500 with full crower valvetrain and funny thing is that it wasnt even solid roller still hydraulic and gaing hp at the rpm. I guess he was lucky with lifters
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Originally posted by Dave Feerst
With that much exhaust dur, and that little valve overlap Im guessing it opens around 52-55 degrees BBDC A cam like that greatly reduces pumping losses but at high RPMs you lose some of the followthrough on the push on the piston, Whatever it makes, I say It'll have a good 50 more torque than HP.
With that much exhaust dur, and that little valve overlap Im guessing it opens around 52-55 degrees BBDC A cam like that greatly reduces pumping losses but at high RPMs you lose some of the followthrough on the push on the piston, Whatever it makes, I say It'll have a good 50 more torque than HP.
I was REALLY hoping to see 450rwhp. hell ken mook made 406 on a 350
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Joined: Feb 2003
Posts: 641
From: St. Charles, Il
Buy going with a 383 you increased the amount of ring friction over his 350 A 383 has more torque potential But Its almost as hard to make 450 with a 383 as it is ith a 350. And like I said earler. he has the 5.7 rods still, but less angle becuase of his shorter stroke, and what cam does he have?
