Pro Stock 2595cc F20C engine
08-16-2008, 02:57 AM
#22
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Knowing that this is a custom application and requires a unique cam to match....I wanted to get your opinion on the downsides of an off-the-shelf cam from BC, Skunk, or TODA. Since your Lift and Duration seem to be similar on paper. Valve float? Piston to valve contact issues? Ramp Speed?
Seems that the most mysterious part about the F20C is the cams. Any insight would be very much appreciated.
Seems that the most mysterious part about the F20C is the cams. Any insight would be very much appreciated.
08-16-2008, 06:49 AM
#23
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This engine for a customer would be about $15,000-$16,000 depending on the options.
As far as cams go the shelf parts are fine for some applications. This is an extreme application, that is why I used an extreme camshaft. For a street motor a shelf cam would suit them better. I don't really have an opinion on most of the shelf stuff because I have not dynoed or degreed too many of them to see how good they are. The thing about the F20c is that the valves are large for their placement and there is very little room between them for a large camshaft. I always recommend checking piston to valve and valve to valve on all the F20c stuff. People don't want to hear that because it requires alot of work, money, and time.
The only one thing I am sure about is that the Brian Crower stage 3 cams will not fit in the stock cylinder head without modification and they are big but not huge.
It all really comes down to testing. You have to test the cams for your application to get the most out of them.
As far as cams go the shelf parts are fine for some applications. This is an extreme application, that is why I used an extreme camshaft. For a street motor a shelf cam would suit them better. I don't really have an opinion on most of the shelf stuff because I have not dynoed or degreed too many of them to see how good they are. The thing about the F20c is that the valves are large for their placement and there is very little room between them for a large camshaft. I always recommend checking piston to valve and valve to valve on all the F20c stuff. People don't want to hear that because it requires alot of work, money, and time.
The only one thing I am sure about is that the Brian Crower stage 3 cams will not fit in the stock cylinder head without modification and they are big but not huge.
It all really comes down to testing. You have to test the cams for your application to get the most out of them.
08-18-2008, 07:23 AM
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Yes, the block will be sleeved. I do all the sleeving here at the shop. I use CP pistons. I have been using them for years now and I am very happy with their quality and customer service. We are sponsored by them as well as sell their products.
We have always raced everything we sell. I don't sell anything to the customer that I have not tried on one of our cars. The only way to be on top of your game with these cars is to work on them constantly.
We have always raced everything we sell. I don't sell anything to the customer that I have not tried on one of our cars. The only way to be on top of your game with these cars is to work on them constantly.
08-18-2008, 03:01 PM
#28
Originally Posted by midnightsunset,Aug 14 2008, 07:34 PM
What is the basis for the higher RPM limit as I have not found anyone remotely experienced pushing past the factory 9k, especially on a stroked motor.
Can't wait to see the end results. Thank you for sharing this.
Can't wait to see the end results. Thank you for sharing this.
