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Re: smallblock stroker, 600 HP out of question? on pump gas
[Re: Stroker Scamp]
#345238
07/30/13 07:54 PM
07/30/13 07:54 PM
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Joined: Oct 2009
Posts: 1,267
North, Alabama
D-50
pro stock
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pro stock
Joined: Oct 2009
Posts: 1,267
North, Alabama
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My 394 c.i. small block made 662 hp and 533 ft lbs torque with a 1050 on it and pump gas. It has a 950 holley on it now.
1.33 60 ft,6.21 at 110.59 in the 1/8, pump gas small block,2950lbs,drag radials,mufflers and driven to track ...
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Re: smallblock stroker, 600 HP out of question? on pump gas
[Re: Crizila]
#345240
07/30/13 11:18 PM
07/30/13 11:18 PM
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Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11
super stock
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super stock
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
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575 hp at about 5900 rpm with a 408, pre magnum roller block. Hydraulic roller lifters and an erson cam in the 256 @.050 range if I recall correctly. Heads were Indy oval ports flowing at peak, 337 cfm @ .650" lift, cam was opening valves to approximately .600" so the full airflow wasn't being utilized. Scat forged crankshaft, studded mains, stock caps. Scat I beam rods (I would have opted for H beams on this build) Icon flat top pistons at zero deck. FelPro .039" crushed head gaskets, 65 cc chambers and thoroughly modified Indy rocker arms (grooved shafts, grooved rocker body to provide close to full time oiling to the ball and cup at the pushrod) Smith brothers pushrods and polished ball adjusters on the rocker arms (that Indy rocker arm stuff is crap). Ported Indy intake matched to the heads, some 1-3/4" dirt track headers and a 950 quickfuel carb if I remember correctly. It ran on pump fuel but our elevation is right around 5000 ft. The numbers were corrected to sea level with DTS' dyno software. With a solid roller camshaft and T&D rockers, this engine would have been over 600 hp. A similar build we did was with rectangle port heads that I did prior to these oval ports that flowed about 335 cfm, had the matching intake, a solid roller camshaft and approximately 10.8:1 cr instead of 11.6 made 591 hp on the same dyno. The owners threw nitrous at it and couldn't quite break into the 9's. Finally missed the tune and burned a piston then proceeded to take the engine to another shop which tore the engine apart and talked nothing but crap about the parts we used. Ah well, I thought it did quite well for a stock 360 block and caps with enough nitrous to pick up over 1 second in the quarter. We knew they were going to use nitrous, but they didn't tell us how much. I suspect it was a snowball effect, we want to go faster so let's throw some more nitrous at it. I feel that either one of those engines would do what the op is asking an engine to do.
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Re: smallblock stroker, 600 HP out of question? on pump gas
[Re: dodgeboy11]
#345243
07/31/13 05:36 PM
07/31/13 05:36 PM
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Joined: Apr 2009
Posts: 3,415
Toronto
mshred
master
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master
Joined: Apr 2009
Posts: 3,415
Toronto
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Quote:
575 hp at about 5900 rpm with a 408, pre magnum roller block. Hydraulic roller lifters and an erson cam in the 256 @.050 range if I recall correctly. Heads were Indy oval ports flowing at peak, 337 cfm @ .650" lift, cam was opening valves to approximately .600" so the full airflow wasn't being utilized. Scat forged crankshaft, studded mains, stock caps. Scat I beam rods (I would have opted for H beams on this build) Icon flat top pistons at zero deck. FelPro .039" crushed head gaskets, 65 cc chambers and thoroughly modified Indy rocker arms (grooved shafts, grooved rocker body to provide close to full time oiling to the ball and cup at the pushrod) Smith brothers pushrods and polished ball adjusters on the rocker arms (that Indy rocker arm stuff is crap). Ported Indy intake matched to the heads, some 1-3/4" dirt track headers and a 950 quickfuel carb if I remember correctly. It ran on pump fuel but our elevation is right around 5000 ft. The numbers were corrected to sea level with DTS' dyno software. With a solid roller camshaft and T&D rockers, this engine would have been over 600 hp. A similar build we did was with rectangle port heads that I did prior to these oval ports that flowed about 335 cfm, had the matching intake, a solid roller camshaft and approximately 10.8:1 cr instead of 11.6 made 591 hp on the same dyno. The owners threw nitrous at it and couldn't quite break into the 9's. Finally missed the tune and burned a piston then proceeded to take the engine to another shop which tore the engine apart and talked nothing but crap about the parts we used. Ah well, I thought it did quite well for a stock 360 block and caps with enough nitrous to pick up over 1 second in the quarter. We knew they were going to use nitrous, but they didn't tell us how much. I suspect it was a snowball effect, we want to go faster so let's throw some more nitrous at it. I feel that either one of those engines would do what the op is asking an engine to do.
What kind of rpms was that motor shifted at with the hydraulic roller? Double valvesprings on it? Stock lifters?
Sorry for all the questions, just got me curious thats all. My hydraulic rollers never really seemed to like rpm so just wondering where this one did
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Re: smallblock stroker, 600 HP out of question? on pump gas
[Re: mshred]
#345252
08/03/13 04:11 AM
08/03/13 04:11 AM
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Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
dodgeboy11
super stock
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super stock
Joined: Feb 2007
Posts: 1,025
Las Vegas, NV
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Quote:
What kind of rpms was that motor shifted at with the hydraulic roller? Double valvesprings on it? Stock lifters?
Sorry for all the questions, just got me curious thats all. My hydraulic rollers never really seemed to like rpm so just wondering where this one did
I don't recall what the solid roller motor was turning rpm, about all I had to do with that one was the heads and intake. The hyd roller motor wouldn't turn over 6500, and when it reached 6500, it wasn't happy. Shift points, realistically, are probably 6200, maybe 6300. I really didn't like the pushrod angles. Between the 59 degree lifter angle and the short pushrods necessary with the tall hydraulic lifters, it just seemed like an accident waiting to happen. But it never did spit anything out and it sure ran strong on the dyno.
Here's a picture down one of the intake runners on the oval port.
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