454 Advice Needed
#1
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Thread Starter
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Ok need advice/opinions will this work.
Do you think I can get 500-525 hp at the prop out of the following build ?
What would you recommend.?
-Start with GM short block 454HO #12498778
-Heads Edelbrock Perfromer RPM Aluminum#6145- Intake 290 cc/Exhaust 110cc runners and chamber 110cc
-Cam duration at .050" tappet lift (intake/exhaust) is 224/234 ; and using 1.7:1 rocker ratio (intake/exhaust) is 527/544.Valve lash is zero/zero and lobe centerline is 110 degrees.
-Intake would be Dart single plane #41214000
or Edelbrock Victor 454-O with Holley 830cfm
Any help appreciated.
Do you think I can get 500-525 hp at the prop out of the following build ?
What would you recommend.?
-Start with GM short block 454HO #12498778
-Heads Edelbrock Perfromer RPM Aluminum#6145- Intake 290 cc/Exhaust 110cc runners and chamber 110cc
-Cam duration at .050" tappet lift (intake/exhaust) is 224/234 ; and using 1.7:1 rocker ratio (intake/exhaust) is 527/544.Valve lash is zero/zero and lobe centerline is 110 degrees.
-Intake would be Dart single plane #41214000
or Edelbrock Victor 454-O with Holley 830cfm
Any help appreciated.
#2
Registered
![Default](/forums/images/icons/icon1.gif)
Ok need advice/opinions will this work.
Do you think I can get 500-525 hp at the prop out of the following build ?
What would you recommend.?
-Start with GM short block 454HO #12498778
-Heads Edelbrock Perfromer RPM Aluminum#6145- Intake 290 cc/Exhaust 110cc runners and chamber 110cc
-Cam duration at .050" tappet lift (intake/exhaust) is 224/234 ; and using 1.7:1 rocker ratio (intake/exhaust) is 527/544.Valve lash is zero/zero and lobe centerline is 110 degrees.
-Intake would be Dart single plane #41214000
or Edelbrock Victor 454-O with Holley 830cfm
Any help appreciated.
Do you think I can get 500-525 hp at the prop out of the following build ?
What would you recommend.?
-Start with GM short block 454HO #12498778
-Heads Edelbrock Perfromer RPM Aluminum#6145- Intake 290 cc/Exhaust 110cc runners and chamber 110cc
-Cam duration at .050" tappet lift (intake/exhaust) is 224/234 ; and using 1.7:1 rocker ratio (intake/exhaust) is 527/544.Valve lash is zero/zero and lobe centerline is 110 degrees.
-Intake would be Dart single plane #41214000
or Edelbrock Victor 454-O with Holley 830cfm
Any help appreciated.
I am running a mkIV block 7.4l with gm perf aluminum heads 110cc with 1.7 rockers zz502/502 cam wich is the same as what you have,zz502/502 intake. The only thing i have diff is i am running 10.7:1 compression with the srp 10:1 forged pistons and a BG 825 carb.
If i use the 20hp per mph to figure my hp gains i picked up 200hp from the stock 330hp. I gained 10mph and still have some rpm's to find.
So if i go from that i am pushing 530hp.
I have not dynoed the engine so this is just a wag.
If that makes sense
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Last edited by BY U BOY; 04-27-2007 at 10:52 AM.
#3
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You're basically building a 454cube version of a ZZ502 with a single plan intake.
I think you will be close to 500HP at the crank with headers.
Probably more like 450HP at the prop.
I think you will be close to 500HP at the crank with headers.
Probably more like 450HP at the prop.
__________________
Patrick
Patrick
#5
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I do remember reading a thread about a guy that started with a ZZ502. The engine dyno'd around 480 stock.
He had the heads ported, changed the cam to a 500EFI, and changed to a single plan intake.
I believe the engine made around 550HP with the mods.
You may consider starting with a 502 vs. the 454.
He had the heads ported, changed the cam to a 500EFI, and changed to a single plan intake.
I believe the engine made around 550HP with the mods.
You may consider starting with a 502 vs. the 454.
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Patrick
Patrick
#7
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Cam duration at .050" tappet lift (intake/exhaust) is 224/234 ; and using 1.7:1 rocker ratio(intake/exhaust) is 527/544.Valve
IS THIS A ROLLER CAM?
IS THIS A ROLLER CAM?