All,
I thought I would share a little glimpse into one of our engines we use as part of our R&D. Having a relationship with Sammy Swindell especially now that he is racing part time vs full time is invaluable. With a bore of 4.133 and a stroke of 3.820 you end up with 409.8 cubic inches. The heads are All Pro who dominates the sprint car world. These are 13 degree heads. The injection is built by Tim Engler (former tractor puller). The butterflies are 2.900 each. These engines run on pure methanol at 16:1 compression. These engines will turn between 8500-9500 rpms. Usually closer to the 8500 mark. We use our BAS 5W40 in these engines. On cool nights when qualifying a 20Wxx may not be your friend. some of our customers will run a 10W50 in the heat of the summer. The cam data will be meaningless for comparison as the cam is a 60mm cam with wheel guided lifters (note bushings). The cam weighs a mild 14 pounds. The end result to the valve is a lift of .791 on the intake (2.200) and .775 on the exhaust (1.600). The spring are 750 pounds open. Here are some pictures. I never get tired of looking at these. These make 920 and 940 HP.
David
I thought I would share a little glimpse into one of our engines we use as part of our R&D. Having a relationship with Sammy Swindell especially now that he is racing part time vs full time is invaluable. With a bore of 4.133 and a stroke of 3.820 you end up with 409.8 cubic inches. The heads are All Pro who dominates the sprint car world. These are 13 degree heads. The injection is built by Tim Engler (former tractor puller). The butterflies are 2.900 each. These engines run on pure methanol at 16:1 compression. These engines will turn between 8500-9500 rpms. Usually closer to the 8500 mark. We use our BAS 5W40 in these engines. On cool nights when qualifying a 20Wxx may not be your friend. some of our customers will run a 10W50 in the heat of the summer. The cam data will be meaningless for comparison as the cam is a 60mm cam with wheel guided lifters (note bushings). The cam weighs a mild 14 pounds. The end result to the valve is a lift of .791 on the intake (2.200) and .775 on the exhaust (1.600). The spring are 750 pounds open. Here are some pictures. I never get tired of looking at these. These make 920 and 940 HP.
David
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