57000 dollar racr engine3/11/2023 ![]() ![]() blower manifold: low cost, standard blower location, cast manifold with burst panel.fuel pump: 12.5 to 13 GPM rating at 4,000 pump RPM running at 1/2 engine speed new or rebuilt used from one of the reputable fuel injection suppliers.fuel system: mechanical fuel injection hat style throttle body with 8 nozzles.new or well maintained blower roller bearings and shaft seals are a necessity.blower: low cost standard 6-71 or 8-71 without rotor seals.valve spring seat pressure: 300 pounds with premium valve retainers and keepers.exhaust valves: stainless steel 1.6 to 2 inches.intake valves: stainless steel 2 to 2.25 inches.cylinder heads: hand ported cast iron or aluminum if aluminum for non-highway use, solid castings recommended.camshaft: roller tappet with less than 0.700 inch lift, less than 290 deg duration, lobe centers 109 to 112 for wedge / poly cylinder head, 113-116 for hemi head cam index: straight up do not run a cast camshaft core, only steel.alloy steel top ring, cast iron 2nd, high tension oil ring.9 to 1 with piston-to-wall clearance as recommended by the piston manufacturer pistons: thick dome blower piston with mild compression ratio approx.premium soft bearings: main clearance approx.rods: premium high strength steel or premium high strength aluminum (minimum strength level: 7075-T6 alloy or greater in aluminum rods) in new condition NOT used with a lot of runs on them also NOT new or used rods without a history record, such as from a swap meet or classifieds ad.crankshaft: aftermarket 4340 alloy crankshaft based on a low cost forging made by one of several manufacturers with good heat treating and machining resources.power output relatively independent of engine size for engines within this range.displacement: 327-460 (engines larger than 460 are unnecessary and not recommended).engine platform: small or big block GM, 460 Ford, early 354 or 392 Hemi, or Late Model Hemi (such as low cost 16 bolt intake/cylinder head combo), 413, 426, 440.This is a ‘high power per dollar’ engine that is based on a low cost block/cylinder head platform: all cast iron small or big block GM, Ford, or Mopar V-8 with the following specs: mechanical fuel injection hat with only hat nozzles (no port nozzles) for methanol fuel.a standard opening small blower (not the more expensive delta lower opening).It also was applied very well to drag racing exhibition and grudge fest, starting with a low cost blown alcohol racing engine. The following is an example of a low cost combination for land or water racing. ![]() Power levels & specifications contained in this article were observed from similar engines but cannot be guaranteed. Additional qualified expert engine building / tuning skills and information is necessary. Adequate performance without engine failures is also dependent on appropriate engine assembly and parts selection not addressed by these descriptions. Appropriate adjustments to jetting or ignition advance are all needed before full power, full runs should be done. Incremental runs with spark plug readings (such as described in our books and other sources) and temperature checking in between runs are necessary. Spark plug readings and engine temperature measurements are needed from incremental runs to determine if jetting adjustments from these baseline profiles may be further needed for your particular setup. In any of these engine profiles, jetting combinations were determined from similar running engine profiles previously analyzed with ProCalc. Disclaimer: All of the following engine profiles cannot be guaranteed to work adequately right out of the box.
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