This message was edited on
August 15, 2008 at
07:16:10 AM by cubicdollars
Billet blocks are outlawed. Rumor had it around here that supposedly the only reason Ott had one built a few years back was so he could have a long enough block to enable running a larger than normal bore size (~4.250). Now Brodix, Chevy and Mopar supposedly started making 1/2" longer blocks, so it's not necessary to have one custom built. Larger bore + shorter stroke = higher rpm in all forms of racing. Starting in 2009 you won't be able to run a larger bore than 4.165 however, which will even do away with the need for the newer style 1/2" longer block.
1.2 ENGINE
a) V8, cam in block, small block motors only. Big block motors are strictly prohibited.
b) Maximum engine capacity of 410.000 cubic inches. No tolerance will be permitted on this maximum capacity. Formula = 6.2832 x bore² x stroke.
c) Front magneto/distributor drive blocks are strictly prohibited. Only cast blocks and heads are permitted. No billet machined blocks or heads.
d) Only normally aspirated motors are permitted. No turbos, superchargers or forced induction of any description will be permitted.
e) All engine cylinders must be machined from iron/steel alloy only. Only two valves and one spark plug permitted per cylinder. Magneto ignitions only. No multiple coil-pack ignitions allowed. Starting in 2009 engine cylinder bore size shall not exceed 4.165.
f) No titanium headers, crankshafts, rods or rod caps will be permitted. Stainless steel headers are permitted.
g) Engine connecting rods must be 100% steel. There must be an inspection plug in the oil pan. Either a #12AN fitting or a 1 inch pipe plug. If a car is to be inspected and there is no inspection plug in the oil pan it will be required to pull oil pan for inspection.
h) No offset motors will be permitted. The engine must be directly in front of driver. Driver must straddle the driveline.
i) A minimum of two throttle return springs must be used to close the throttle.
j) Maximum throttle bore as measured at the butterfly may not exceed 3.000 inches diameter. Only butterfly and shaft throttle body styles with circular bores are permitted. Slide plate, rotary cylinder or other styles permitted only with prior written approval from World of Outlaws.
http://63.76.74.109/~/media/Downloads/2008%20RULE%20BOOK%201%2015%2008.ashx
They don't even know how to spell sprint car
much less chromoly...http://www.ycmco.com
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