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Title: Bus Drag Engine Head Choise Please help Post by: bedjo78 on October 08, 2009, 23:19:22 pm Hi
I'm just close to reassembly back the Engine after one tappet broke. Right now I have 2 sets of CB CNC 044 heads. One is Wedge Port 42X37 ad the other is Ultra wegde port 46X37. Previous set up I'm using Wedge Port with comp ratio 10:1. The previous engine running well a lot of torq. I want to change it with Ultra Wedge also step up the ventury to 42 of my DRLA48. but I still confuse as many friends of me said I should stay with small Valves and small ventury. Here is my Bus engine combo 1. CB 84 X 94. Scat H beam 5.5 chevy 2. webcam 121 with Pauter 1:3 rocker 3. Side winder 1-5/8 4. DRLA 48. 40 vent (will move to 42 - looking for your opinion please) 5. Full weight Flywheel with kennedy stage2 Note: This Engine only for Drag Racing only Title: Re: Bus Drag Engine Head Choise Please help Post by: K-Roc on October 09, 2009, 00:36:39 am Don't listen to your friends, the 46mm Valve Wedge port will out perform the 42mm for sure, You will probably have to experiment with Venturi sizes once it's on the track. ;)
Title: Re: Bus Drag Engine Head Choise Please help Post by: 58vw on October 09, 2009, 01:38:16 am Hi I'm just close to reassembly back the Engine after one tappet broke. Right now I have 2 sets of CB CNC 044 heads. One is Wedge Port 42X37 ad the other is Ultra wegde port 46X37. Previous set up I'm using Wedge Port with comp ratio 10:1. The previous engine running well a lot of torq. I want to change it with Ultra Wedge also step up the ventury to 42 of my DRLA48. but I still confuse as many friends of me said I should stay with small Valves and small ventury. Here is my Bus engine combo 1. CB 84 X 94. Scat H beam 5.5 chevy 2. webcam 121 with Pauter 1:3 rocker 3. Side winder 1-5/8 4. DRLA 48. 40 vent (will move to 42 - looking for your opinion please) 5. Full weight Flywheel with kennedy stage2 Note: This Engine only for Drag Racing only bigger head....your not lookin for better mileage are ya ;D Title: Re: Bus Drag Engine Head Choise Please help Post by: bedjo78 on October 09, 2009, 04:02:49 am Don't listen to your friends, the 46mm Valve Wedge port will out perform the 42mm for sure, You will probably have to experiment with Venturi sizes once it's on the track. ;) Hi darren... It's me that awaiting for the availaibilty of the heads for the Bus I think I will step up to 4" bore next build Title: Re: Bus Drag Engine Head Choise Please help Post by: bedjo78 on October 09, 2009, 04:05:00 am Ok I will go to Ultrawedge and 42 Vent.
To get the compression up to 11:1 How much I need to Flycut the Ultrawedge heads |